General description 0PE50

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In industrialized countries, where there is a high level of electrification, not only is poor electrical power supply quality not accepted by consumers, but in many countries over recent years, compulsory regulatory standards have been drawn up in order to guarantee the quality of electrical service that is provided.

In response to this situation, electrical utilities companies are requiring new products and a high reliability and easily managed service focused on reducing:b the number of power outagesb thedurationoftheoutagesb theincreaseinaffectedzones

We can implement a certain number of actions to reduce the above mentioned points, such as:busingundergroundpowerlinesb reducingthelengthoflinesbgood maintenance of networks and their environmentbselecting and applying suitable devices on HV lines.

PM6isSchneider Electrics best solution: installed on its customers HV lines, this equipment enables them to achieve their target objectives to improve network management and automation and thus increase the quality of service provided to customers.

PresentationPM6isanSF6 breaking disconnector switch designed to be mounted on all types of poles. It can be installed in rural and semi-urban overhead distribution networks, up to 38 kV.

Although it is specially designed for remote control functions, it can also be controlled locally in manual mode.

The PM6 range also offers a fullt manual solution (S2D, S3D) which is very competitively priced.

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Reference standardsPM6 is manufactured in conformity with the following international standards:bEuropean: IEC 60265-1, IEC 60129, IEC 60694, IEC 60529, IEC 60298, IEC 60815bAmerican: ANSI C37.63.

Moreover, the equipment production process is carried out in compliance with an ISO 9001 certified quality program.

PM6 Range

General characteristics 0Breaking device

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This is made up of an external stainless steel enclosure, without any additional protective coatings, to give a smooth, clean, self-cleaning and aerated surface that is highly resistant to corrosion.

The disconnector switch breaking chambers and the SF6 gas are inside the enclosure.

The enclosure with the SF6 has very compact dimensions and only the parts specifically required for breaking are inside the enclosure to limit the gas volume.

The casing is connected to earth and it is therefore impossible for a dangerous leakage current to pass between the terminals on one side and the terminals on the otherwhenthedeviceisintheopenposition;inaddition,noadditionaldisconnectorsare necessary to guarantee the isolation distance. This feature is what gives the equipment its characteristics as a disconnector switch.

All sensitive components, which may need to be fully dismantled in the event of an external incident following transient network disturbances (ferroresonance, circuit breaker, overheating of components, etc.), are placed outside of the SF6 enclosure, e.g. motors, voltage transformer, current sensors, electronic components, etc.

The compact volume and the low internal SF6 pressure (0.3 bars at 20C), considerably reduce the risk of any gas leakage. The enclosure is sealed for life and meets pressurized sealed system criteria in conformity with standard IEC 60694, which is why it is not necessary to check the internal pressure of the equipment.

During extinction of the electrical arc, the overpressure is basically confined to the volume between the contacts. This overpressure is very low and even if it accidentally increases, it would be limited to 2.5 bars due to the presence of an overpressure membrane located on the top of the enclosure.

There is very little energy dissipated in the arc due to the qualities of the gas, the short arc length and the short arc duration; even in frequent operation, the device is capable of breaking all load currents for 30 years without needing any servicing of the active parts.

Version S3 / S4.

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Key:

1 SF6 disconnector switch.

2 Electrical control mechanism.

3 MV line connections.

4 Manual control transmission.

5 Manual control mechanism.

6 Anchoring structure.

7 Support cradle.

8 Lightning arresters.

9 Voltage transformer.

10 Control unit.

11 Lever for control rod.

12 Mechanical latching.

Version S2D / S3D.

PM6 Range

General characteristics 0PE50

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Electrical switching and control mechanismThe electrical switching and control mechanisms are located inside an independent distribution enclosure, combined with the disconnector switch breaking device.

The basic mechanism involves an opening-closing system (passing through a neutral point), activated by a spring for switching operations to take place independently of the operator switching speed (Tumbler system).

With all these parts are inside an enclosure with a high protection index, we can guarantee excellent behavior of our equipment in bad weather, as proven in the following tests :b resistance to salt mist for 1 000 h.bcyclic abrupt temperature variations testing (from -10 C to +70 C) at a relative humidity of 98 %.

The electrical control mechanism comprises a 48 V DC motor for the electrical opening and closing operations, operated either from the control unit situated at the pole base or from a remote control center if appropriate.

A device directly linked to the disconnector switch contact position (open or closed) makes sure it is in the right position. This device, and the position indicator that is easily visible from the ground, comply with the fully apparent opening criterion described in the IEC standard.

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MV connectionsThe PM6 disconnector switch is equipped with 6 silicone connectors, enabling connection of the HV line using a non-insulated cable.

According to the type of installation, PM6 can optionally be supplied with plug-in terminals and an insulated cable.

Support cradle and anchoring system The disconnector switch and control mechanism are mounted on the support cradle.

This unit is then fixed at the desired height using the anchoring system.

PM6 Range

9General characteristics 0 Manualcontrol

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According to requirements and market preferences, Schneider Electriccanoffertwo variants, according to the type of manual control required.

The relative arrangement of the switch and the fixing of the equipment to the pole is consequently modified.

The sales reference number for the equipment varies according to the manual control mechanism chosen.

1. Manual control via a transmission systemb reference 24 kV : PM6-S3b reference 36 kV : PM6-S4

The manual control system comprises a transmission shaft going to the base of the pole and an operating lever which can be mechanically padlocked in one of the three positions :LOCKED OPEN - REMOTE CONTROL - LOCKED CLOSED.

This type of manual operation offers the advantages of being quick and easy to activate in an emergency and of being easier and safer for the operator when carrying out switching operations.

Version S3 / S4.

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2. Manual control via a rod systemb reference 24 kV: PM6-S2Db reference 36 kV: PM6-S3D

The equipment is operated using a rod system. Mechanical locking to block the OPEN - CLOSED positions is optional .

The main advantages of this type of operating mechanism for the equipment can be summarized in terms of the lack of any need for manual control settings when being installed, the total impossibility of the equipment being controlled by someone from outside of the company and the search for harmonization relative to how most overhead distribution equipment is operated.

Comment: whatever manual control system is chosen, the breaking device and the accessories required for remote control of the device are idencal and the electrical and functional characteristics are therefore the same for the whole of the PM6 range.

Version S3 / S4.

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Version S2D / S3D.

PM6 Range

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General characteristics 0 Electricalcharacteristics

According to standards IEC - CAT. E3M2Version S3/S2D S4/S3D

Rated voltage (kV rms.) 24 36Rated current (A) 400 to 630Insulationlevel kV rms, 50 Hz/1 min intheearthingconnection 50 0

attheisolationdistance 0 0Impulse wave kV, 1.2/50 s intheearthingconnection 125 170

attheisolationdistance 145 195Breaking capacity (A) mainly active load 400 to 630

ringload 400 to 630no load transformer 10 20noloadline 10 10

Closing capacity kA (peak value) 31.5 31.5Short time withstand current kA (rms value) - 1 s 12.5 12.5

kA (peak value) 31.5 31.5According to ANSI standards

Maximum rated voltage kV rms (rated voltage class: 34.5 kV rms) 38Rated voltage with radiating type impulses, kV peak 150Low frequency testing, kV rms: 1 min when dry/10 s wet 70/80Rated current at 60 Hz (A) 00Instant current and asymmetric closing overcurrent, kA rms 18.5Symmetric current 1 s, kA rms 12.5Symmetric current 10 s, A rms 3.8Other characteristics

Temperature (C) maximum + 50 + 50minimum - 25 - 50

Mechanicalstrength AC cycles 5000 5000Protection index switchenclosure IP IP

controlunit IP55 IP55Storage energy mechanism maximum switching time (s) No. of short circuit closing operations (8 kA) - 150 150Internalarcing kA (rms value) - 1 s 10 10

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The electrical endurance is represented on these diagrams which give us a sample of the number of switching operations that the PM6 can carry out.

PM6 Range

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Advantages 0 PE50

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ThePM6 offers many benefits for your HV lines:

Low purchase costsSince this is a highly optimized piece of equipment, the manual disconnector switch option is highly competitive. In addition, the difference between a PM6 equipped with manual control or with a manual-electrical control unit is minimal (less than the cost of this operation in the future: buying the motor, disconnecting the voltage, guarantees for the installation, etc.). Therefore the customer can install equipment on his network that will be easy to control remotely.

Low design costsSincethePM6 is a disconnector switch, it is not necessary to use external disconnectors (air insulated) in order to ensure the disconnection conditions on the HV line, if the equipment is in the open position.

This characteristic represents a major cost saving for utilities companies both in terms of installation and maintenance costs for these external disconnectors.

Low installation costs All equipment that is normally installed outdoors can be assembled on the same structure: voltage transformers, lightning arresters, etc. This allows the installation time to be reduced.

Low maintenance costsSince all of the sensitive parts (breaking device, springs, motors, etc.) are sealed in stainless steel enclosures, the equipment can be installed in harsh environments and withstand icing, extreme temperatures and saline or corrosive conditions, without any need for any maintenance.

PM6 is maintenance free for 30 years under normal operating conditions.

Low cost in the case of an incident Should it be necessary to change an accessory: motor, voltage transformer, current transformer, etc., the operation can be carried out without dismantling the equipment. For the control unit, the electronic modules making it up are easily dismantled circuit boards, all of which are very easy to replace. This enables the repair times to be reduced as well as the down time of the electricity service.

PM6 Range

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Options 0 Controlunit

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The flexibility of the PM6 unit allows our disconnector switch to be adapted to all types of control unit if the equipment is to be used in remote control mode.

However, the PM6hasadedicatedcontrolunit,the EASERGY T200P, specially designed by Schneider Electric to carry out these functions.

Designed to be pole-mounted outdoors, it is a stainless steel casing, with all components manufactured in conformity with EMC standards.

The unit comprises the following components:ba cradle for all the electronic modules:vswitch connection modulevCPU and the local control indication modulevRTU communication modulevbattery power supply-charger moduleba batteryba supply transformer with its protection deviceb free space to install a radio or a modem.

The main advantages of our control unit are:beasy to install and in the case of an incident, the components are easy to replaceb localPM6 management from the control unitbopen-ended to all types of protocols and communication systemsbcapable of executing automatic control functions. Disconnector functionbcurrent and voltage measurements. Status indicationbeasy to operate and handle.

Operating principle

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Options 0 Controlunit

CapacityIControllable switch 1 channel / 2 channels (option)ISwitch information Open/closed ordersAdditional information Latched open/closed positionsAutomatic control SEC - sectionalizerAutomatic control management ES/HS order, ES/SH Latched positionPower supply Alternating voltageCharacteristics 90 to 240 V AC, 50 Hz, 120 VAIsolation 5 kVPower supply

Telecommunication 12 V (1 A permanent, 7 A max.)Motorization 48 V DCBattery

Type SealedleadCapacity 12 V-38 AhBack-up time at 20 C 16 h + 10 cycles O/CMonitoring Deepdischarge,periodictestsCharacteristicsDielectricAlternatingUinput IEC 255-4 Isolation (50 Hz / 1 min): 5 kV

Impulse wave (1.2 / 50 s): 10 kVCore balance CT input IEC 255-4 Isolation (50 Hz / 1 min): 2 kV

impulse wave (1.2 / 50 s): 5 kVElectromagnetic

Fast transients IEC 1000-4-4 Level 4:4 kV (sectors and sensors), 2 kV (other circuits)

Electrostaticdischarges IEC 1000-4-2 Level 3: 6 kV with 8 kV contact in airRadiating electromagnetic IEC 1000-4-3 80 MHz - 1 GHz - 10 V/mfieldsMC radio frequency IEC 1000-4-6 0.15 MHz to 80 MHz - 10 VrmsDamped oscillatory waves IEC 1000-4-12 2.5 kV shared mode, 1 kV differential modePulsed magnetic field IEC 1000-4-9 1000 A/m peakImpulse wave IEC 1000-4-5 Coupling between 1 kV line cables, between

cables and earth 2 kVMagnetic field 50 Hz IEC 1000-4-8 30 A/m permanent at 300 A/m 1 to 3 sClimatic

Temperature -15 C to +55CRelative humidity IEC 68-2-3 Less than 95% at 40 CSalt mist IEC 68-2-11 168 hStorage temperature IEC 68-2-14 -40C to +70 CMechanical

Vibrations IEC 68-2-6 10 to 500 Hz; 1 g or 0.075 mn peak to peakDimensions H x L x D 630 x 410 x 350 mmWeight 40 kgProtection IEC0529 IP55ConnectionConnection cubicles

Connection type Harting 10 pin connector

PM6 Range

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Options 0 Controlunit

DisplayIndication Reason F.A. PC Super.

Open/closed position Open/closed position of the switch b b b

ISwitch locked Switch blocked b b b

Phasefault Appearance of a phase current greater than the configured threshold b (*) b bEarthingfault Appearance of a zero sequence current greater than the configured

thresholdb (*) b b

Digital input x (1 to 3) Digitalinputpresent b bLocal Equipment under local control b b bImmediate indication of AC fault Lack of alternating U power supply b b b

Time delayed indication of AC fault Lack of alternating U power supply after a duration that can be defined between 1 mn and 4 h

b b

Automatic control in action The automatic control has functioned (opening the switch) b b b

Measurement module fault Incorrect functioning of the measurement and fault detection module b b

Chargerfault Battery charger output voltage too high or too low b bBattery fault Batteries at the end of their life cycle or charging anomalies b b b

Switch power supply OFF Switch power supply turned off b b b

Telecommunication power supply OFF Power supply of the telecommunications output turned off b b b

Communication fault Lack of communication with the remote control supervisor (in the case of series module communication) or with a communication module

b b

F.A.: front face of the Easergy T200P. P.C.: Equipment status menu on the EaSERgy T200P - Configuration and Diagnosis IT program,Super.: remote supervisor,(*): in the Control panel module, Phase fault and Earthing fault indications are grouped together on the same indicator light.

PM6 connection - Control unit

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Options 0 Controlunit

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Disconnector functionThe control unit is equipped with the sectionalizer automatic control option whichconvertsthePM6 into a disconnector switch.

In coordination with the automatic network head switch or with therecloser units, the PM6 can differentiate between transient faults and permanent faults in the section in which it is installed, automatically isolating the line only if there is a permanent fault.For this function, the PM6 must be equipped with the following functions:bvoltagedetectionbcurrent detection.

Automatic openingofthePM6 disconnector switch occurs when the equipment has detected between 1 and 4 fault currents (programmable value) and when the following conditions are fulfilled:bvoltage is at zero (automatic switch or recloser circuit breaker situated upstream is open)b thePM6isintheclosedpositionb the automatic control time has not expired.

This function is particularly recommended in branch lines and conflicting network points or ones that are difficult to access, when we want to avoid transient fault procedures and so avoid disrupting the service to other users.

1) Network head switch operation.2) PM6 disconnector switch operation.

Parameter Value AccuracyFault detectionPhasedetectionthreshold Configurable from 100 to 750

A by 50 A increments3%

Zero sequence detection threshold

Configurable from 2 to 160 A 5% from 80 to 160 A

by 1 A increments 10% from 25 to 80 A15% from 2 to 25 A

Reaction time Configurable from 50 ms to 800 ms by 25 ms increments

20 ms for I = 1.2 x threshold

Release threshold 95% of the trip threshold

3%

Limit value hold 12.5 kA - 1 sDeletingrecordsoffaultcurrentfed back from alternating U

Configurable

Deletingrecordsofcurrentsdue to time delay

Configurable from 15 mn to 2 h by 15 mn increments

PM6 Range

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Options 0

The options described below can be supplied and installed by the customer.

However, PM6 offers the possibility of installing all of these options on the same structure for quick and easy installation.

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Voltage transformerIn places where equipment such as PM6 is normally installed, there is no auxiliary power supply to power the control unit charging device, including the radio, and its electronic circuit boards... It is therefore necessary to install an outdoor voltage transformer to supply the power needed for independent operation of all the equipment. A specially designed bracket has been included on the disconnector switch cradle for this purpose.

The voltage transformer gives the necessary voltage presence and absence signals in order to carry out the disconnector function and setting by remote control.

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Current transformersPhase and fault current measurements are made using 3 current transformers, two phase and one zero sequence unit, placed on the disconnector switch.

This configuration ensures the detection of all types of fault that can occur on the line.

The transformer ratio is 500/1 A.

The zero sequence detection threshold is between 2 A - 160 A.

The phase fault detection threshold is between 100 A - 750 A.

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Lightning arrestersThree lightning arresters on each side of the disconnector switch can be placed on an appropriate support frame to protect the equipment from overvoltages resulting from atmospheric conditions.

These lightning arresters are of zinc oxide type.

PM6 Range

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The right choice 0 PM6 RangePM6 Range

MESAistheSchneider Electric Groups world-wide center of competency for the PM6 range.

ReferencesSince 1990, over 8 000 units have been installed throughout the world under all types of climatic conditions.

ThePM6 range is approved by major Spanish and foreign companies and is recognized throughout the world.

There is already an installed equipment base of 1,500 units in Spain, where we are leaders in this field.

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EnvironmentPM6 units have been designed as environmentally friendly equipment: the materials used, the insulators, the conductors... are identified and can easily be recycled. Moreover, the SF6 can be recovered and reused after suitable treatment.

The environmental management system adopted by MESA has been certified in conformity with the ISO 14001 standard.

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General dimensions 0 Versions S3 / S4

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S3 / 24 kV S4 / 36 kV Fixing of lightning arrestersA 1975 2200B 1400 1700C 30 1050

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Fixing of the voltage transformer

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Weight (approximate)S3 / 24 kV S4 / 36 kV

Basic equipment 127 kg 138 kgBasic equipment + VT 165 kg 182 kgBasic equipment + lightning arresters 182 kg 238 kgBasic equipment + VT + lightning arresters 220 kg 282 kgThe rods, the manual control and the control unit not included.

PM6 Range

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General dimensions 0 Versions S2D / S3D

PM6 RangePM6 RangeP

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S2D / 24 kV S3D / 36 kV Fixing of lightning arrestersA 315 30B 1400 1650

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Fixing of the voltage transformer

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Weight (approximate)S2D / 24 kV S3D / 36 kV

Basic equipment 130 kg 140 kgBasic equipment + VT 170 kg 180 kgBasic equipment+ lightning arresters 205 kg 255 kgBasic equipment + VT + lightning arresters 245 kg 295 kgControl unit not included.

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M.V. devices 0 PE50

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Since the user has the best knowledge of the issues involved on his network and his objectives, he will therefore basically decide how to manage the devices installed on the network.

However, below we give a series of general guidelines which mainly focus on optimizing M.V. overhead distribution network management in terms of safety of people, installation costs and quality of service, all within the framework of a flexible operating arrangement.

Main lineTheinstallationofPM6 type remote controlled disconnector switches is the best and most economic and flexible option to disconnect the main lineatvariouspointsandprovide the isolation distance at these points.

They can be used for radial or open ring lines; in the second case, they will be used as network reconfiguration components.

In the case of long radial type lines, it may be necessarty to use reclosing devices to decentralize the protection that exists in the sub-station, whilst taking the necessary precautions to avoid coordination problems with respect to the associated protection devices.

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Recloser or reclosing circuit breaker

automatic switch

Three-pole / single-pole disconnector

Disconnector switch / disconnector function

Disconnector switch

Disconnector

Cut-out fuse

Fault detector

Lightning arrester

Remote control

Branch lineFor this type of line, factors such as line length, topography, load, quality of supply, etc. impact the choice of the installed equipment.

Generator setsUntil now, the protection and management of these network points has been carried out using fuses, circuit breakers or manual disconnectors.

Disconnectors are tending to replace these solutions.

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