PIC Tutorials

8/6/2019 PIC Tutorials

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NEMA(1) Define various NEMA enclosure types.The purpose of this document is to providegeneral information on the definitions of NEMA(National Electrical Manufacturers Association)

Enclosure Types to architects, engineers,installers, inspectors and other interested parties.[For more detailed and complete information,NEMA Standards Publication 250-1997,"Enclosures for Electrical Equipment (1000 VoltsMaximum)" should be consulted. This Standards

Publication as well as all other NEMApublications are available from IHS @ 800 854-7179.]DefinitionsIn Non-Hazardous Locations, the specificenclosure Types, their applications, and the

environmental conditions they are designed toprotect against, when completely and properlyinstalled, are as follows:Type 1 - Enclosures constructed for indoor use toprovide a degree of protection to personnel


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against incidental contact with the enclosedequipment and to provide a degree of protectionagainst falling dirt.

Type 2 - Enclosures constructed for indoor use toprovide a degree of protection to personnelagainst incidental contact with the enclosedequipment, to provide a degree of protectionagainst falling dirt, and to provide a degree ofprotection against dripping and light splashing of

liquids.Type 3 - Enclosures constructed for either indooror outdoor use to provide a degree of protectionto personnel against incidental contact with theenclosed equipment; to provide a degree ofprotection against falling dirt, rain, sleet, snow,

and windblown dust; and that will be undamagedby the external formation of ice on the enclosure.Type 3R - Enclosures constructed for either

indoor or outdoor use to provide a degree of

protection to personnel against incidental contact

with the enclosed equipment; to provide a degree

of protection against falling dirt, rain, sleet, andsnow; and that will be undamaged by the

external formation of ice on the enclosure.


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Type 3S - Enclosures constructed for either




of protection against falling dirt, rain, sleet, snow,

and windblown dust; and in which the external

mechanism(s) remain operable when ice laden.

Type 4 - Enclosures constructed for either indoor

or outdoor use to provide a degree of protectionto personnel against incidental contact with the

enclosed equipment; to provide a degree of

protection against falling dirt, rain, sleet, snow,

windblown dust, splashing water, and hose-

directed water; and that will be undamaged bythe external formation of ice on the enclosure.

Type 4X - Enclosures constructed for either




of protection against falling dirt, rain, sleet, snow,

windblown dust, splashing water, hose-directed

water, and corrosion; and that will be


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undamaged by the external formation of ice on

the enclosure.

Type 5 - Enclosures constructed for indoor use to

provide a degree of protection to personnel

against incidental contact with the enclosed

equipment; to provide a degree of protection

against falling dirt; against settling airborne dust,

lint, fibers, and flyings; and to provide a degree

of protection against drippingand light splashing of liquids.

Type 6 - Enclosures constructed for either indoor

or outdoor use to provide a degree of protection

to personnel against incidental contact with the

enclosed equipment; to provide a degree ofprotection against falling dirt; against hose-

directed water and the entry of water during

occasional temporary submersion at a limited

depth; and that will be undamaged by the


Type 6P - Enclosures constructed for either





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of protection against falling dirt; against hose-

directed water and the entry of water during

prolonged submersion at a limited

depth; and that will be undamaged by the


Type 12 - Enclosures constructed (without

knockouts) for indoor use to provide a degree of


with the enclosed equipment; to provide a degreeof protection against falling dirt; against

circulating dust, lint, fibers, and flyings; and

against dripping and light splashing of liquids.

Type 12K - Enclosures constructed (with

knockouts) for indoor use to provide a degree ofprotection to personnel against incidental contact


of protection against falling dirt; against

circulating dust, lint, fibers, and flyings; and

against dripping and light splashing of liquids.

Type 13 - Enclosures constructed for indoor use

to provide a degree of protection to personnel

against incidental contact with the enclosed

equipment; to provide a degree of protection


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against falling dirt; against circulating dust, lint,

fibers, and flyings; and against the spraying,

splashing, and seepage of water, oil, and

noncorrosive coolants.


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(2) Summarize NEMA enclosure type 4

hazardous and non-hazardous locations.


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(3) Describe IP (Ingress protection) classification

course.

An IP number is used to specify the

environmental protection of enclosures around

electronic equipment. These ratings are

determined by specific tests. The IP number is

composed of two numbers, the first referring tothe protection against solid objects and the

second against liquids. The higher the number

the better the protection.


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1. Degrees of Protection - First Digit

The first digit of the IP code indicates the degree

that persons are protected against contact with

moving parts (other than smooth rotating shafts,

etc.) and the degree that equipment is protected

against solid foreign bodies intruding into an

enclosure.

0 No special protection

1 Protection from a large part of the body such as

a hand (but no protection from deliberate

from solid objects greater than 50mm in diameter

2 Protection against fingers or other objects notgreater than 80mm in length and 12mm

in diameter

3 Protection from entry by tools, wires, etc., with

a diameter or thickness greater than

2.5mm

4 Protection from entry by solid objects with a

diameter or thickness greater than 1.0mm

5 Protection from the amount of dust that would

interfere with the operation of the


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equipment

6 Dust-tight

2. Degrees of Protection - Second Digit

Second digit indicates the degree of protection of

the equipment inside the enclosure against the

harmful entry of various forms of moisture (e.g.

dripping, spraying, submersion, etc.).

0 No special protection1 Protection from dripping water2 Protection from vertically dripping water3 Protection from sprayed water4 Protection from splashed water

5 Protected against low-pressure jets from alldirections - limited ingress permitted6 Protected against direct sprays from alldirections - limited ingress permitted7 Protection against effects of immersion from15cm to 1m

8 Protection against complete, continuoussubmersion in water from 15 meters or 50feet


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IP Code Symbols

The chart below illustrates the use of specialsymbols in the IP classification system. In the "1st

digit" columns, note the grid-like symbols next tonumbers 5 and 6. In the "2nd digit" columnsnumbers 3-8 are symbolized by teardrop shaped

symbols, sometimes enclosed in a box or atriangle, sometimes unenclosed (7-8).

Example:

1st Digit Protection from solid objects 2nd DigitProtection from solid objects


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UL1.What do you mean by UL standards?

Ans. UL means Underwriters Laboratories.

UL 1:These requirements cover flexible

aluminum and steel conduit designed for use as

metal raceway for wires and cables in accordance

with the National Electrical Code, NFPA 70.

UL 6a:These requirements cover aluminum(ERMC-A) and stainless steel (ERMC-SS)

electrical rigid metal conduit, nipples, elbows,and couplings in 12 - 155 (3/8 - 6) trade sizes foruse as metal raceway for the installation of wiresand cables in accordance with CSA C22.1,Canadian Electrical Code, Part 1, NOM-001-


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SEDE, Standard for Electrical Installations, andNFPA 70, It is the users responsibility todetermine the appropriate product for the

application.

These requirements also cover red brass (ERMC-RB) electrical rigid metal conduit, nipples,elbows, and couplings in 16 (1/2) trade size foruse as metal raceway for the installation of wiresand cables in direct burial and swimming pool

applications in accordance with the applicablenational electrical installation codes.

UL 13: These requirements cover 60 - 250C (140- 482F) single- and multiple-conductor power-limited circuit cables for use as fixed wiringwithin buildings (some are also marked for direct

burial) principally for Class 3 and Class 2 circuitsas described in Article 725 and other applicableparts of the National Electrical Code (NEC).Cables covered by these requirements are:

a) Types CL3P and CL2P (plenum cables),

b) Types CL3R and CL2R (riser cables),

c) Types CL3 and CL2 (commercial cables forother than plenum, riser, or tray uses),

d) Types CL3X and CL2X (cables for limiteduse), and


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e) Type PLTC (cable for non-plenum and non-riser Class 3 and Class 2 circuits in general andin trays).

UL 20: The requirements of this Standard applyto manually operated, general-use snap switchesfor connection to copper (Cu) or copper-cladconductors used in accordance with the NationalElectrical Code(NEC), ANSI/NFPA 70, or theCanadian Electrical Code (CEC), and intended

for connection to wiring systems recognized bythe NEC or the CEC. In Canada, requirementsfor switches for connection to aluminum (Al)conductors used in accordance with the CEC,and intended for connection to wiring systemsrecognized by the CEC.

This Standard applies to ac/dc rated switches forwhich the load ratings do not exceed 60 A at 250V or less, 30 A at 251 V - 600 V, and 2 hp at 125V - 600 V or less. This Standard also covers ac-only rated switches for which the load ratings donot exceed 30 A at 347 Vac or less.

This Standard applies to switches constructed tobe installed readily in a flush device box or on anoutlet-box cover and intended for connection tobranch-circuit wiring.


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This Standard applies to pendant and through-cord switches intended for field installation onflexible cord and provided with one "on" and one

"off" position.

This Standard applies to switches intended forsurface mounting and provided with a separablebase and cover for connection to exposed wiringconsisting of nonmetallic sheathed cable or openwiring on insulators (knob and tube).

This Standard applies to self-contained switchesintended for flush mounting without a separateoutlet box and for connection to branch-circuitwiring consisting of one or more non-metallicsheathed cables containing copper conductors.

This Standard applies to ac/dc fixture switches

intended to be installed in fixtures to controlincandescent lighting or fans for connection tobranch-circuit wiring.

This Standard also applies to single-pole,momentary-contact door switches constructed tobe installed readily in a special-purpose device

box or on an outlet-box cover for connection tobranch-circuit wiring.

This Standard does not apply to:


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a) Clock operated switches specified in theStandard for Clock-Operated Switches, UL 917,and CSA Standard C22.2 No. 177;

b) Dimmer switches specified in the Standardfor Solid-State Dimming Controls, UL 1472, andCSA Standard C22.2 No. 184.1;

c) Industrial control equipment specified in theStandard for Industrial Control Equipment, UL508, and CSA Standard C22.2 No. 14;

d) Solid-state, single-phase motor speedcontrols specified in the Standard for Solid-StateFan Speed Controls, UL 1917, and CSA StandardC22.2 No. 156;

e) Special-use and ac-only fixture switchesspecified in the Standard for Special-UseSwitches, UL 1054, and CSA Standard C22.2 No.55; and

f) Switches for use in hazardous locationsspecified in the Standard for Switches for Use inHazardous (Classified) Locations, UL 894, andCSA Standard C22.2 No. 159.

For switches intended for connection to branch-circuit wiring containing aluminum conductors,refer to the Standard for Receptacles and


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Switches Intended for Use with Aluminum Wire,UL 1567.

UL 25: These requirements cover positivedisplacement liquid meters for:

a) Flammable and combustible liquids of thetype and size commonly used in the assembly ofmotor fuel dispensing devices and

b) Liquefied petroleum gas (LP-Gas) of the type

and size commonly used in the assembly of motorfuel dispensing devices and tank trucks.

UL 33: These requirements cover heat responsivelinks used for fire-protection service. These linksconsist of devices intended for installation underload conditions such as for use with automaticfire suppression systems; or automatic closuredevices for doors, windows, dampers or smokerelief vents.

UL 48: These requirements cover electric signs,referred to as signs, using incandescent lamps,fluorescent lamps, HID lamps, neon tubing andother combinations, for use in accordance withthe National Electrical Code, NFPA 70.

UL 58: STANDARD FOR SAFETY FOR STEELUNDERGROUND TANKS FOR FLAMMABLEAND COMBUSTIBLE LIQUIDS


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Scope

These requirements cover horizontalatmospheric-type steel tanks intended for thestorage underground of flammable andcombustible liquids.

These requirements cover single wall tanks,secondary containment tanks, multiplecompartment single wall and multiplecompartment secondary containment tanks.

These tanks are intended for installation and usein accordance with the Standard for theInstallation of Oil-Burning Equipment, NFPA 31,the Flammable and Combustible Liquids Code,NFPA 30, the Automotive and Marine ServiceStation Code, NFPA 30A, and the Standard for

the Installation and Use of StationaryCombustion Engines and Gas Turbines, NFPA37, and the Uniform Fire Code, published by theInternational Fire Code Institute.

Tanks covered by these requirements arecylindrical tanks that are fabricated, inspected,

and tested for leakage before shipment from thefactory as completely assembled vessels.

These requirements do not apply to tankscovered by the Standard for Welded Steel Tanks


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for Oil Storage, API 650, nor tanks intended foruse in chemical and petrochemical plants.

This Standard does not cover corrosionprotection which may be required by local, stateor federal authorities. Corrosion protectionsystems installed at the factory on carbon steelunderground storage tanks are covered in UL1746, External Corrosion Protection System forSteel Underground Storage Tanks.

A product that contains features, characteristics,components, materials, or systems new ordifferent from those in use when the Standardwas developed, and that involves a risk of fire,electric shock, or injury to persons, shall beevaluated using the appropriate additional

component and end-product requirements asdetermined necessary to maintain the level ofsafety for the user of the product as originallyanticipated by the intent of this Standard.

UL 65: These requirements cover wired cabinetsfor use in accordance with the National Electrical

Code.These requirements cover display cases andspecial-purpose cabinets containing electricalwiring, with or without illumination.


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These requirements also cover wired cabinets ofsuch size that they must be sectionalized forshipping from the factory, and assembled and

wired at the installation site.

These requirements do not cover bathroomcabinets, cabinets provided with or designed foruse with refrigeration equipment, or general usecabinets or boxes intended for the enclosure ofelectrical equipment.

UL 67: These requirements cover panel boards tobe employed in accordance with the NationalElectrical Code, NFPA 70.

These requirements cover panel boards for thecontrol and protection of electric lighting andappliance branch circuits, and power circuits,

including feeder distribution panel boards. Theyalso cover units specifically designed for panelboard assembly.

These requirements do not cover:

a) Distribution equipment which sole function isthe automatic or nonautomatic transferring ofone or more load conductor connections from onepower source to another. Reference the Standardfor Transfer Switch Equipment, UL 1008.


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b) Factory wired assemblies of industrialcontrol equipment intended to control industrialprocesses. Reference the Standard for Industrial

Control Panels, UL 508A.

c) Distribution equipment containing only onecircuit subdivision, unless also provided with ameter socket. See 5.5.1. Reference the Standardfor Molded-Case Circuit Breakers, Molded-CaseSwitches and Circuit-Breaker Enclosures, UL

489.d) Distribution equipment intended to serve asa means for distributing power required tooperate mobile or temporarily installedequipment. Reference the Standard for PowerOutlets, UL 231.

e) Factory wired assemblies of controllers,timers, temperature regulating equipment andsuch, intended for control of equipment for usewith swimming pools, hot tubs, and/or spas.Reference the Standard for Electric Spas,Equipment Assemblies, and Associated

Equipment, UL 1563.f) Factory wired assemblies intended for thecontrol of Architectural and Floating Fountains.Reference the Standards for Motor-Operated


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Water Pumps, UL 778, Underwater Luminairesand Submersible Junction Boxes, UL 676 andIndustrial Control Panels, UL 508A.

g) Portable power distribution equipment.Reference the Standard for Portable Power-Distribution Equipment, UL 1640

UL 80: These requirements cover steel primary,steel secondary, and steel diked type atmosphericstorage tanks from 60 to 660 gallons (227 to 2500

L) intended primarily for the storageand supply of heating fuels for oilburning equipment, or alternately forthe storage of diesel fuels forcompression ignition engines andmotor oils (new and used) forautomotive service stations, inaboveground applications.

UL 96A: These requirements coverthe installation of lightningprotection systems on all types of

structures other than structuresused for the production, handling, orstorage of ammunition, explosives,flammable liquids or gases, and


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other explosive ingredients includingdust.

These requirements apply tolightning protection systems that arecomplete and cover all parts of astructure. Partial systems are notcovered by this standard.

This standard does not cover

lightning protection for:a) Electric transmission lines oropen air distribution racks,b) Outdoor substations or switchyards, andc) Electric generators unenclosed

by a building other enclosedstructure.

UL 132: These requirements coverpressure and safety relief valves andhydrostatic relief valves foranhydrous ammonia and liquefied

petroleum gas (LP-Gas) for use oncontainers built in accordance withASME Pressure Vessel Code, in


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nonrefrigerated systems in facilitiescovered by the following standards:

a) Safety Requirements for theStorage and Handling of AnhydrousAmmonia, (ANSI K61.1), ANSI/CGA G-2.1.

b) Liquefied Petroleum Gas Code,NFPA 58.

c) Utility LP-Gas Plant Code, NFPA59.

SPECIAL TYPE

UL 61010b-2-032: ElectricalEquipment for Measurement,Control, and Laboratory Use.

Scope:

Replace the text by the following:

This International Standard appliesto hand-held and hand-manipulatedCURRENT CLAMPS. These CURRENTCLAMPS are for use in themeasurement of current without


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equipment and computing devicesfor:

measurement and test; control;

laboratory use;

accessories intended for use withthe above (e.g. sample handlingequipment).

This Part 1 of the standard applies to

the equipment defined in a) to c)

below, when used under the

environmental condition.

a) Electrical measurement and testequipment. This is equipment whichby electrical means measures,indicates or records one or moreelectrical or non-electricalquantities, also non-measuringequipment such as signalgenerators, measurement standards,power supplies, transducers,transmitters, etc. NOTE - Allindicating and recording electrical


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measuring instruments (except thoseexcluded in 1.1.2) fall within thescope of this standard unless theyare panel meters designed only forbuilding-in to other equipment. Built-in panel meters are considered ascomponents and only need to meetthe relevant requirements of IEC1010, or other standards, as part ofthe equipment into which they arebuilt.

b) Electrical control equipment.This is equipment which controls oneor more output quantities to specific

values, with each value determinedby manual setting, by local or remoteprogramming, or by one or moreinput variables.

c) Electrical laboratory equipment.This is equipment which measures,

indicates, monitors or analysessubstances, or is used to preparematerials. This equipment may also


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be used in areas other thanlaboratories.

UL 61010c-1: Process ControlEquipment

This International Standard specifiesgeneral safety requirements forelectrical equipment intended forprofessional, industrial process, and

educational use, includingequipment and computing devicesfor:

measurement and test;

control;

laboratory use;

accessories intended for use withthe above (e.g. sample handlingequipment).


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This Part of the standard applies to

the equipment defined in a) to c)

below, when used under theenvironmental conditions.

a) Electrical measurement and testequipmentThis is equipment whichby electrical means measures,indicates or records one or moreelectrical or non-electricalquantities, also non-measuringequipment such as signalgenerators, measurement standards,power supplies, transducers,transmitters, etc.NOTE - Allindicating and recording electricalmeasuring instruments fall withinthe scope of this standard unlessthey are panel meters designed onlyfor building-in to other equipment.Built-in panel meters are consideredas components and only need tomeet the relevant requirements ofIEC 1010, or other standards, as part


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of the equipment into which they arebuilt.

b) Electrical control equipmentThisis equipment which controls one ormore output quantities to specificvalues, with each value determinedby manual setting, by local or remoteprogramming, or by one or more

input variables.c) Electrical laboratoryequipmentThis is equipment whichmeasures, indicates, monitors oranalyses substances, or is used toprepare materials.This equipment

may also be used in areas other thanlaboratories

UL 61010-1: Electrical Equipment ForMeasurement, Control, andLaboratory Use;

This part of IEC 61010 specifies

general safety requirements forelectrical equipment intended forprofessional, industrial process, andeducational use, any of which may


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incorporate computing devices, asdefined in a) to d) below, when usedunder the environmental conditions.

a) Electrical test and measurementequipmentThis is equipment whichby electrical means tests, measures,indicates or records one or moreelectrical or non-electrical

quantities, also non-measuringequipment such as signalgenerators, measurement standards,power supplies, transducers,transmitters, etc.NOTE All indicatingand recording electrical measuring

instrument fall within the scope ofIEC 61010 unless they are panelmeters designed only for building-into other equipment. Built-in panelmeters are considered to becomponents and only need to meet

the relevant requirements of IEC61010, or other standards, as part ofthe equipment into which they arebuilt.


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b) Electrical control equipmentThisis equipment which controls one ormore output quantities to specificvalues, with each value determinedby manual setting, by local or remoteprogramming, or by one or moreinput variables.

c) Electrical laboratory

equipmentThis is equipment whichmeasures, indicates, monitors oranalyses substances, or is used toprepare materials, and includes invitro diagnostic (IVD) equipmentThisequipment may also be used in areas

other than laboratories, for exampleself-test IVD equipment may be usedin the home.

d) Accessories intended for usewith the above (for example, samplehandling equipment).

UL-61010a-1:Electrical EquipmentFor Laboratory Use

This International Standard specifiesgeneral safety requirements for


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electrical equipment intended forprofessional, industrial process, andeducational use, includingequipment and computing devicesfor:

measurement and test;control; laboratory use; accessories intended for

use with the above (e.g.sample handlingequipment).

This Part 1 of the standard applies to

the equipment defined in a) to c)below, when used under the

environmental conditions.

a) Electrical measurement and testequipmentThis is equipment whichby electrical means measures,indicates or records one or moreelectrical or non-electricalquantities, also non-measuringequipment such as signal


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generators, measurement standards,power supplies, transducers,transmitters, etc.NOTE - Allindicating and recording electricalmeasuring instrumet fall within thescope of this standard unless theyare panel meters designed only forbuilding-in to other equipment. Built-in panel meters are considered ascomponents and only need to meetthe relevant requirements of IEC1010, or other standards, as part ofthe equipment into which they arebuilt.

b) Electrical control equipmentThisis equipment which controls one ormore output quantities to specificvalues, with each value determinedby manual setting, by local or remoteprogramming, or by one or more

input variables.c) Electrical laboratoryequipmentThis is equipment whichmeasures, indicates, monitors or


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FMWhat do you mean by FM (FactoryMutual) Standards & Define thefollowing.

FM 1110 :This standard sets

performance requirements for indicator

posts. Indicator posts are controls,

extending above ground or through

building walls, for operating gate valves

used in fire protection systems. Animportant feature of their design is a

target indicator, visible through an

opening in the post, which is provided to

show whether the valve is open or shut.

FM 1221 :This standard sets

performance requirements for backflow

preventers which can be used in


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connections between public water

supplies and fire protection systems to

prevent reverse flow. Local healthauthorities usually recommend these

devices to prevent contaminated water

from entering public water supplies.

FM 1321 : This standard encompasses

the design and performancerequirements for controllers for electric

motor driven and diesel engine driven

fire pumps used in fire pump service

that are designed and installed in

accordance with the applicabledocuments and the FM Global Property

Loss Prevention Data Sheets. The

intended operation of a fire pump

controller is to initiate and sustain the

operation of the fire pump driver in the

event of a fire. In addition, controllers

are tested under specified overload and

fault conditions. To this extent the fire


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pump controller is unique when

compared to other industrial motor

controllers, and system reliability isimproved by provisions for

self testing and annunciation of

conditions that could result in fire

protection impairment.

FM 1333 : This standard encompassesthe design and performance

requirements for diesel engines used in

fire pump service that are designed and

installed in accordance with FM Global

Property Loss Prevention Data Sheets.This Standard does not address National

or Local Codes which require specific

emission levels to be

met by stationary diesel engine

installations.FM 1635 : This standard encompasses

the design and performance

requirements for plastic pipe and


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fittings in light hazard occupancies for

use in automatic wet sprinkler fire

protection systems. Approval standardsare intended to verify that the product

described will meet stated conditions of

performance, safety, and quality useful

to the ends of property conservation.

FM 2000 : This standard states FMApprovals criteria for automatic control

mode sprinklers for fire protection

service. FM Approvals criteria may

include, but are not limited to,

performance requirements, markingrequirements, examination of

manufacturing facility (ies), audit of

quality assurance procedures, and a

follow-up program.

FM 2008 : These automatic sprinklersare intended for use in certain

occupancies in which fire suppression is

possible. They are not suitable for use in


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occupancies where fire cannot be

suppressed by water (e.g., low flash

point flammable liquids, oxidizingchemicals, etc.). Refer to the FM Global

Property Loss Prevention Data Sheets

for more specific information.

FM 3260 : This standard sets

performance requirements for radiantenergy-sensing fire detectors for the

protection of occupants, building space,

structure, area, or object.FM Approval

Standards are intended to verify that

the product described will meet statedconditions of

Performance, safety and quality that are

useful to the ends of property

conservation.

FM 3600 : This standard shall apply to:Electrical equipment or parts of

electrical equipment rated for use in

Hazardous (Classified) Locations as


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defined by the National Electrical Code

(NEC), ANSI/NFPA 70;

Associated equipment located outside ofthe Class I, II or III location whose design

and construction may influence those

parts of the equipment within the

classified location.

FM 3610 :This standard provides

requirements for the construction and

testing of electrical apparatus, or parts

of such apparatus, whose circuits are

incapable of causing ignition in:Classes

I, II & III, Division 1 hazardous

(classified) locations as defined in

Article 500 of the National Electrical

Code, ANSI/NFPA-70 (NEC).

FM 3611 :

This standard sets performancerequirements for the construction and

testing of electrical apparatus, or parts

of such apparatus, for use in Class I and


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II, Division 2, and Class III, Divisions 1

and 2 hazardous (classified) locations.

Electrical equipment intended for use inClass I and II, Division 2, and Class III,

Divisions 1 and 2 hazardous (classified)

locations is apparatus in which any

spark or thermal effect, produced under

normal conditions,

is incapable of causing ignition of a

specified mixture of flammable or

combustible material in air.

FM 3615 :

This standard contains the basic

requirements for the construction and

testing of explosion proof electricalequipment. This standard is intended to

be used in conjunction with Approval

Standard 3600 which includes the


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general requirements that apply to all

types of hazardous (classified) location

protection methods.FM 3620 :

This standard is intended to be used in

conjunction with Class 3600 FM

Approval Standard which includes the

general requirements that apply to alltypes of protection for electrical

equipment for use in hazardous

(classified) locations.

FM 3810 :

This standard applies to

electrical, electronic, or electro-

mechanical equipment designed:

to measure or observe, and indicate

quantities of electrical or electronicphenomena, or

to supply electrical or electronic

quantities for measuring or indicating


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purposes, or

to measure or control, directly or

indirectly, an industrial process, orto measure or indicate electrical

analogs of non-electrical phenomena, or

to measure, indicate, monitor, analyze

substances or prepare materials, i.e.,

Laboratory Equipment.

FM 3990 :

This standard

also applies to any component intended

for use as a protective device and that

is normally provided as part of thetransformer assembly. Use of

components previously Approved as

individual protective devices shall not

automatically result in an Approved

transformer assembly.

FM 6051 : The

requirements of this standard are

intended as guidelines reflecting current


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FM Approval tests and practices.

Containers, which do not precisely

conform to these requirements may beApproved if they meet the intent of this

standard. Similarly, items that do

conform to these requirements may not

be Approved if they do not meet the

intent of these requirements or if other

conditions govern.

FM 6310 :

This

standard is concerned with the detailsof construction, performance and

testing of portable, mobile and

stationary electrical instruments that

sense the presence of combustible gas

or vapour concentrations in air. Based

on associated requirements specified in

Section 3, this standard considers the

suitability of the instruments or parts


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thereof for use in Class I, hazardous

(classified) locations as defined by the

National Electrical Code (ANSI/NFPA70).


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Tender

Specification forPower Plant

(Diesel)

Switchgear andControl System

for the Electrical

Equipment of a Diesel

Power Station

8 x 6500 kVA, 11 kV,50 Hz

Drawings andDocumentation


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Drawings and documentation willbe issued to the above mentioned

standards.

3-fold in DIN A4 size, English

language.

Drawings will be generated with

our engineering system CAE 33.

Preparation of documents used in

Electric Technology Part 2:

Function-oriented diagrams acc. to

DIN/EN 61082-1-3 (IEC 1082-1-3)

Diagrams, charts, tables:

Item designation acc. to DIN 40

719-2 (IEC 750).

Graphical symbols of diagrams acc.

to DIN 40 900-1.....12


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(IEC 617-1.....12).

Normal colour codes of the wiring

as follows:

Black - the 3 phases and

normal control wiring

and

secondary

winding of

p.t.'s

Light Blue - neutral

Yellow / Green - earthing

Red - DC-

wiring 24 V+

Blue - DC-

wiring 24 V-

Brown - DC-wiring 110 V+

Violet - DC-

wiring 110 V-


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Grey - secondary

wiring of c.t.'s

White - wiring forpotential free contacts.

The Common Control Panel

consisting of:

1 Control and Monitoring Unit

interface "CMC1" with 10.4" colour

graphic

display

1 Secondary, freely programmable

logic control system (PLC) for the

common control specific features

Interconnecting Remote Modules

"IRM-1" for the common


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auxiliaries

Depending on the configuration,

the following modes of operation(see also

page 3) and functions are available:

Standby operation (gen.-sets are

started only in case of mains

failure)

Prime power operation (permanent

operation without connection to the

mains)

Mains parallel operation

Mains parallel operation with

automatic standby operation

Black Start function

Load management

Interfaces for data transfer with:

the Control and Monitoring units

for Gen-Set type "CMG-2",mounted in

alternator control panels (CAN-Bus)

the offered Power Station Scada


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The Local Data Board additionally

consists of:


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1 Programmable logic controller

PLC, make SEGPLC with the following functions:

Start preparation with engine-

specific start-up program

Control and supervision of the

engine and its auxiliary drives

Data collection of the analogue and

digital signals of the actors and

sensors of the engine

Data transfer

Shut-down of Diesel engine

PLC consisting of:

Compact housing with modules of

required quantity

Power supply

Central controller (CPU)

Digital input channels acc. to theengine manufacturers monitoring

list

Digital output channels


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Installation on mounting plate of:

Engine electronic speed governor

(issued free of charge by theengine

supplier

Alternator voltage regulator

(outside dimensions max. 320 x 550

mm)


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Power Station Scada System "PSS"

The central communication

interface of the power station

consists of:

1 Personal computer with

Pentium processor with

appropriate performance

and memory capacity

1 Colour graphic monitor, 19"

with high resolution

1 DIN A4 colour inkjet printer for

event and graphic printout1 Ethernet network with

Ethernet cards for insertion into

the vacant slots of

the "CMG-2" and "CMC-1"

processorsOperating system Windows

95/98

Graphics software "InTouch" by


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Transmission of control and

switching commands to the

respectivesystems (with password

protection)

Long-term storage of the data and

events stored in the individual

subsystems "CMG-2" and "CMC-

1"

Tender

Specificati

on for


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PharmaIndustry

1

.

Product andPacka

ge

Specificatio

ns

1

.

1

The Goods to be

purchased by the

Purchaser under this

Invitation for Bids are

included in the

Purchasers current

national essential

drugs list or national

formulary. The required

packing standards andlabel must meet the

latest requirements of

the World Health


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Organization (WHO)

good manufacturing

practices (GMP)

standards in all

respects. (These

standards contained in

Good Practices in the

Manufacture and

Quality Control ofDrugs.)

1

.

2

Product specifications

indicate dosage form

(e.g., tablet, capsules,dry syrup, liquid,

ointment, injectable,

emulsion suspension,

etc.) and the drug

content (exact number

of mg or internationalunits [IU] or % v/v, wlw

or v/w acceptable

range). The Goods


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should conform to

standards specified in

the following

compendia: [The

procuring entity should

specify an accept

Pharmacopoeia

standard from one of

the following: theBritish Pharmacopoeia,

the United States

Pharmacopoeia, the

French Pharmacopoeia,

the International

Pharmacopoeia ortheEuropean

Pharmacopoeia, the

latter particularly for

raw materials.] The

standards will be the

latest edition unless

otherwise stated by

the Purchaser or other

if applicable. In case


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and labelling) should

also meet

specifications suitable

for distribution,

storage, and use in a

climate similar to that

prevailing in the United

Republic of Tanzania.

All packaging must beproperly sealed and

tamper-proofand

packaging components

must meet the latest

compendium standards

and be approved forpharmaceutical

packaging by the

manufacturer's

national Regulatory

Authority (RA). The

Purchaser should

specify any additional

special requirements.


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1

.4

All labelling and

packaging inserts shallbe in the language

requested by the

Purchaser or English if

not otherwise stated.

1

.

5

Goods requiring

refrigeration or

freezing or those that

should not fall below a

certain minimum

temperature forstability must

specifically indicate

storage requirements

on labels and

containers and be

shipped in specialcontainers to ensure

stability in transit from

point of shipment to


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port of entry.

1.

6

Upon award, thesuccessful Supplier

shall, on demand,

provide a translated

version in the language

of the bid of the

prescriber's

information for any

specific goods the

Purchaser may request.

2

.

Labelli

ng

Instru

ctions

2

.

1

The label of the

primary container for

each pharmaceutical

and vaccine products

shall meet the W210

GMP standard and

include:

the international


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non-proprietaryname (INN) orgeneric name

prominentlydisplayed and above

the brand name,where a brand name

has been given.Brand names should

not be bolder orlarger than thegeneric name;

dosage form, e.g.,tablet, ampoule,

syrup, etc.;

the activeingredient "per unit,

dose, tablet orcapsule, etc.";

the applicablepharmacopoeial

standard;


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the Purchaser's logo

and code numberand any specificcolour coding if

required;

content per pack;

instructions for use;

special storagerequirements;

batch number;

date of manufactureand date of expiry(in clear language,

not code);

name and addressof manufacture; and


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Any additional

cautionarystatement.

2

.

2

The outer case or

carton should also

display the above

information.

3

.

Case

Identif

icatio

n

3

.

1

All cases should

prominently indicate

the following:

Purchaser's line andcode numbers;

the generic name ofthe product;

the dosage form

(tablet, ampoule,syrup);

date of manufactureand expiry (in clear


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language not code);batch number;

quantity per case;

special instructions forstorage;

name and address ofmanufacture; and

any additionalcautionary statements.

3

.

2

No case should contain

pharmaceutical

products from more

than one batch.

4

.

Uniqu

e

Identif

iers

4

.

1

The Purchaser shall

have the right to

request the Supplier to

imprint a logo, if the

quantity so justifies it,

on the labels of thecontainers used for

packaging and in

certain dosage forms,


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such as tablets, and

ampoules andthis will

be in the Technical

Specifications. The

design and detail will

be clearly indicated at

the time of biding, and

confirmation of the

design of such logoshall be provided to

the Supplier at the

time of contract award.

5. Standards

of

Qualit

y

Contro

l forSuppl

y

5.

1

The successful Supplierwill be required to

furnish to the

Purchaser:

With eachconsignment, and foreach item a WHO

certificate of qualitycontrol test results


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concerningquantitative assay,chemical analysis,

sterility, pyrogencontent uniformity,microbial limit, and

other tests, asapplicable to the Goodsbeing supplied and the

manufacturer'scertificate of analysis;

Assay methodology ofany or all tests if

requested;

Evidence of bio-availability and/or bio-equivalence for certain

critical Goods uponrequest. This

information would besupplied on a strictly

confidential basis only;and


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Evidence of basis forexpiration dating andother stability data

concerning thecommercial final

package upon request.

5

.

2

The Supplier will also

be required to provide

the Purchaser withaccess to its

manufacturing facilities

to aspect the

compliance with the

GMP requirements and

quality control

mechanisms.

TECHNICAL SPECIFICATION FOR

PHARMACEUTICALS

Product quality and Package

Specifications

Product specification should


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indicate dosage form (e.g., tablet,liquid, injection, emulsion,

suspension, etc.) and the drug

content (exact number of mg or %v/v per doses with acceptablerange). The product should

conform to standards specified inthe latest edition of one of the

following compendia: the BritishPharmacopoeia (BP), the United

State Pharmacopoeia (USP)European Pharmacopoeia (EP) orthe International Pharmacopoeia

(IP). In case the pharmaceutical isnot included in the specified

compendium, the supplier must

provide the reference standardsand testing protocols to allow for

quality control testing.

The following information must besubmitted with the bid:

Certificates of pharmaceutical productsaccording to WHO 41.18 Certification

scheme on the quality of


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pharmaceutical product moving ininternational commerce must be

enclosed.

Copies of registration

certificates of registered

products for human

medicines for products

tendered issued by theTanzania Food and Drug

Authority (TFDA).

Otherwise bidders shall submit copiesof the following documents:

A receipt of registration fee

issued by the Tanzania Food andDrug Authority (TFDA).

A letter of acknowledgement

from the TFDA that the drug

dossier and sample have been

received.Copy of certificate of

pharmaceutical product from


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Drug Regulatory Authority (DRA)

in the country of origin.

The required packing standards andlabelling of pharmaceuticals must meetthe WHO Good Manufacturing Practices

("GMP") standard in all respects.

Alternative specifications to meetfunctional requirements will be

considered, but must be submittedseparate from, and not on the scheduleof quantities and must be limited to amaximum of two offers including the

quoted offer.

The packaging components (e.g.,bottles and closures) should meet

specifications suitable for thepurpose and have no detrimental

effects on the pharmaceuticalproduct Primary packing materials

must give adequate protectionagainst external influence and

potential contamination. All light


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100 ml bottles liquidsyrups/suspensions in not more than

24 units per carton

5 litres bottles in not more than 4 unitsper carton

Eye drops should not be packedmore than 30 units per carton,and if more than 10 units, the

box must be partitioned.Ampoules/ vials must be packed

in units of 10 in sealed boxesand each ampoule/vials must bemarked with the product name,

strength, batch number,manufacture and the expiry

date. Instruction leaflets shouldbe inserted.

All packing must be properly sealedand tamper-proof.

Pharmaceuticals requiringrefrigeration of freezing for stability

must specifically indicate storage

requirements on labels and


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containers and be shipped in special

container to ensure stability in

transit from point of shipment to

Medical stores Department (MSD).

Manufacture and expiration date

All products must indicate the dates

of manufacture and expiry in a clearlanguage note codes. In additional

all products must arrive at the

port/airport of Dar es Salaam with a

remaining shelf life of at least 80%

of the total stipulated shelf life at

the time of manufacture.

Qualifications of Manufacturer

The Supplier shall furnish a

certificate from the competent

authority such as Food and Drug

Authority (FDRA) that the

manufacturer of the

pharmaceuticals is licensed to


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manufacture these products.

Standards and Quality Assurance forSupply

4.1All products must:

Meet the requirements ofmanufacturing legislation and

regulation of pharmaceuticals in thecountry of origin.

Conform to all the specificationscontained herein.

Be certified by a competent authority

in the manufacturer's countryaccording to resolution WHO 28-65B, of

the World Health Organization"Certifications Scheme on the Qualityof Pharmaceuticals Products Moving

International Commerce"

6.2The Supplier will also berequired, if requested, to providethe purchaser with access to its

manufacturer facilities to inspect its


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facilities, quality control proceduresfor raw materials, test methods, in-process tests, and finished dosage

forms.

Recalls

In the event any of the Goods are

recalled, the Supplier shall notify the

Purchaser within fourteen (14) days,providing full details of the reason for

the recall and promptly replace, at its

own cost, the items covered by the

recall with Goods that fully meet the

requirements of the Technical

Specification and arrange for collectionor destruction of any defective Goods.

If the Supplier fails to fulfil its recall

obligation promptly, the Purchaser will,

at the Suppliers expense, carry out

the recall.


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Tender

Specification for


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OilRef inerySCOPE :

The Specification covers manufacture, testing, supply & delivery and therequirementsof new insulating oil of petroleum origin suitable for use as insulating and heattransfermedium and are quenching medium in Power/Distribution transformers and otherequipments used in West Bengal by WBSEDCL.

The oils covered by this standard are of low viscosity type and completely free fromadditives. The oil should contain minimum amount of impurities including moisture,sludge and should have some specified physical and chemical properties as detailedinthe specification.

SERVICE CONDITION :

The transformer oil will be used in WBSEDCL'S Power/ Distribution Transformer andCircuit Breakers installed in outdoor sub-stations of various types subjected to allsortsof seasonal weather variations considering tropical and humid climate of WestBengaland rain, thunder-storms alongwith impact of dust particles on the transformers.

Thetransformer oil should maintain the desired characteristics despite operation undersevere service conditions with all types of above transformers manufactured inIndiaincluding those fitted with on-load tap changing equipment. The temperature of the

oilmay rise upto 95oC under extreme conditions. The manufacturer may cement onthevarnish preferred in insulation of coils etc. due to probable effect on the oil includingthe design feature for accessibility of air, if required.

COMPOSITION :

The oil shall be pure hydrocarbon mineral oil, without any additive, clean andsufficiently free from moisture and other foreign materials likely to impair its


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properties. Mineral insulating oil are made from selected fraction of crude oil. Thecrude oil composed of mainly hydrocarbon, which may differ in their content of themain classes or types of hydrocarbons alongwith non- hydrocarbons as impuritieslikeparaffins, napthenes and aromatics. The transformer oil should be free fromaromatichydrocarbons as they are unsaturated and hence less stable. By proper refining, thecrude oil consisting of above constituents, the desired characteristics are obtained.

CHARACTERISTICS :

The characteristics of the oil when it is sampled at the manufacturer`s works and /orat the point of delivery and tested in accordance with ISS: 335 1993 shouldcomplywith the results given in the IS specification (ISS : 335- 1993 alongwith its latestamendment will be applicable) except for certain characteristics for which the value

applicable will be as shown in the specification sheet.

SAMPLING AND TESTING :

Sampling of the oil shall be done in accordance with IS:6855 1973 and the testsshallbe carried out in accordance with the test methods referred to IS:335-1993 withlatestamendments and modified limit of moisture content only, in the manufacturer's


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laboratory arranged by them.The list of instruments available in the manufacturers laboratory for rigoroustesting,should be furnished alongwith the quotation. Any test, which cannot be carried outintheir laboratory, should be clearly stated in the offer. Those who have no majortestingfacilities in their laboratories need not quote.


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For determination of rate of sludge formation by accelerated ageing test at whichsludge is formed at 115oC in the presence of the copper catalyst at controlled rates ofairflow, WBSEDCL shall prefer the test to run for 96 hours.

The manufacturer may submit their own method of test referring to any national /international standard in the guaranteed technical particulars.

All the tests will be conducted by the vender at their works as per ISS/WBSEDCL'STechnical Specification except for the following tests :

i) Corrosive Sulferii) Accelerated ageingiii) Oxidation stability

The above tests have to be done from any unit of CPRI and all the cost to be borne bythe vendor. For the tests the sample have to be collected in presence of therepresentative of WBSEDCL.

According to General Conditions of Contract, WBSEDCL reserves the right to carry outinhouse testing of the supplied materials at destination stores, in presence ofauthorized representative of the Manufacturer. In case they do not be present,company shall Test unilaterally and their result will be binding on them. In case thetest results deviates from the inspection result carried out at Manufacturers Works(more than 2% tolerance as per IS where ever applicable), the Company reserves the

right to cancel the specific lot and in that event materials are to be replaced by theManufacturer free of cost including the transportation from the site to their works andback.In case of EHV Grade Transformer Oil only, if the test results of the inhouse testingdeviates from the inspection results (only except for Breakdown Voltage and WaterContent) carried out at Manufacturers Works (more than 10% tolerance), theCompany reserves the right to cancel the specific lot and in that event materials are tobe replaced by the Manufacturer free of cost including the transportation from the siteto their works and back. If the test results of the inhouse testing for Electric Strength(Breakdown Voltage) of the new unfiltered oil become less than 45 KV or those forWater Content become more than 25 ppm., the Company reserves the right to cancelthe specific lot and in that event materials are to be replaced by the Manufacturer freeof cost including the transportation from the site to their works and back.

CALIBRATION :

According to General Conditions of Contract, the instruments/equipment required forInspection & Testing should have valid calibration as per following guideline :

(a) Calibration Certificate issued by Laboratory accredited by NABL may beaccepted unconditionally provided the certificate bears an Accreditation bodyLogo.

(b) For Testing equipments, where NABL Accreditation is not available, CalibrationCertificate from Educational Institutions like IITs, NITs, J.U., C.U., BHU onlycan be accepted provided they can demonstrate traceability.

Necessary confirmation regarding above is to be given along with inspection offerfailing which the inspection offer will not be accepted.If during inspection & testing, the suppliers fail to produce Calibration Certificate asindicated above the offered lot may be rejected only except the following three tests.

In case of following three tests only, Calibration of the instruments shall be shown bythe suppliers during inspection & testing according to the calibration method as statedbelow :


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Sl. No. Instrument Calibration Method

1 Interfacial

Tensiometer

With weights as per instruction manual of the Interfacial

Tensiometer according to test method of IS 6104.

2 Viscometer With standard liquids supplied by :

i) M/s. Merk Limited,

...56, New Timber Yard Layout,

...Bangalore 26.

ii) M/s. Alliance Technologies,rd

aaNo. 78, 3 Cross, Sunder nagar,

aaGokul, Bangalore 54.

3 Moisturemeter

QUANTITY :

The quantitY may vary upto maximum 25% subsequently in case of necessity.

PACKING :

The tenderer should indicate in their offer whether they could supply transformer oil inI.S.I. Marked barrels. If they are not in a position to supply transformer oil in ISImarked barrels, their offer may not be considered. The transformer oil should bedelivered in sealed non-returnable epoxy coated new steel barrels each containing209/210 litres of oil. The barrels should conform to Type A or B of ISS: 1783 1974.

TEST REPORTS AND TYPE TESTS :

The bidder shall submit complete test reports of all tests (including Type Test) asstipulated in relevant IS with complete identification and date, carried out in CentralPower Research Institute on the tendered item.Copies of Type Test Report as per latest IS, carried out within five (5) years from duedate of Tender, from Central Power Research Institute shall be submitted alongwith the

offer as pre-requisites. Otherwise the offer may be rejected.

CONSUMERS :

List of reputed concerns to whom the transformer oils have been previously suppliedalongwith order nos. and quantities should be clearly mentioned in the offer.

SOURCE OF SUPPLY :

Name & address of the supplier of base product is to be mentioned in the offer.

REFINERYCENTRE:

Name and address of refinery where the base product is processed are also to bementioned in the offer.

MARKING:

Each drum shall be legibly and indelibly marked with the following :(a) Manufacturers name, (b) Name of the material, (c) Quantity in litres,(d)The words Low Viscosity Type , (e) Date and lot of manufacture,(f) ISI Certification mark as IS-335-1993, (g) Name of Consignee as WBSEDCL.


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0

DECLARATION:

The enclosed declaration sheet (Annexure III) shall have to be filled up and signed.

PRICEVARIATIONFORMULA:

For calculation of Price variation , the tenderer should furnish documents indicatingnecessary dates viz. Price of TOBS/ TOPS, Price of oil barrels, base date effective forthe quoted prices etc.

DOCUMENTSTO BE SUBMITTED AT THE TIME OF PHYSICAL DELIVERY ATCONSIGNEE STORES :

The following documents to be submitted by the venders to the consignee Stores at thetime of despatch to stores by the venders:-

SL.

a)b)c)

d)e)f)

g)h)i)

Copy of purchase Order.Copy of Despatch InstructionInspection Test Certificate

Guarantee CertificateProforma InvoiceCalculation Sheet for price Variation on the basis of IEEMA or CACMAI asapplicable with base date of order.Seal list and packing listChallan in triplicateWay bill, if applicable.

REQUIRED SPECIFICATION OF NEW INSULATING OIL

VALUES PROPOSED AS PER

NO.

1)

2)

3)

4)

5)

6)

7)

CHARACTERISTICS

Appearance

Density at 29.5oC (Max) gm/cc

Viscosity, Kinematic at 27oC (Max)

Interfacial Tension at 27oC(Min)Newton / M

Flash point, Pensky Marten(closed) in oC (min).

Pour point in oC (Max)

Neutralisation value

a) Total acidity, mg KOH /gm

(Max)

TENDER SPECIFICATION

Clear and transparentfree from suspendedmatter or sediments.

0.89

27

0.04

140

- 06

0.03


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b) Inorganic acidity / alkalinity Nil

8)

9)

Corrosive sulphur (Copper strip)19 hours at 140 oC

Electric strength (BreakdownVoltage )KV (rms).

Non corrosive.

a) New unfiltered oil (min).

b) After filteration (min).

60

60

10)

11)

Dielectric dissipation factor(Tan Delta) at 90oC (Max).

Specific resistance (resistivity)

0.002

a)b)

at 90oC , ohm-cms (Min )at 27oC , ohm-cms (Min)

35 x 10 121500 x 10 12

12) Oxidation stability.

a) Neutralisation value, afterOxidation for 164 hours at 100mg KOH/gm (Max).

b) Total sludge, after 164hours

At 100 o C wt. % (max).

C

0.10

0.40

13) Ageing characteristics after accelerated

Ageing (open beaker method withcopper Catalyst) for 96 hours at 115 o C

a) Specific resistance (resistivity)

i) at 27oC , ohm-cms (Min)

ii) at 90oC , ohm-cms (Min)

b) Dielectric dissipation factor(Tan Delta ) at 90oC (Max)

2 . 5 x 1 0

0.2 x 10

0 . 2

12

12

c)

d)

Total acidity, mg KOH/gm (max)

Total sludge value, Wt. % (max)

0.05

0.05

14)

15)

16)

Presence of oxidation inhibitor

Water content, ppm (max)

SK value, % (max)

The oil shall not containanti oxidant additives.

20

-

The values are tentative and there is scope for further improvement in the stability

characteristics of the oil, which may increase the service life of the oil.

Tenderer shall furnish their guaranteed values along with method of tests for the above


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characteristics of Transformer oil, along with their offer.


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The tenderer shall also furnish :

a) Proportion of classes of hydrocarbons in the crude oilincluding content of aromatic

hydrocarbons.

b) Details of barrel (Size, gauge inside/outsidecoating/weight of empty drum not less

than 18 Kg.).

c) List of equipments for testing of oil as per revised ISS

d) Electric strength(breakdown voltage ) KV (Min)

i) Value of the fresh sample in the supplied sealed drums KV(Min).

ii) Value after filling in transformer upto & within 3 months (Min).

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