~2 X 660 MW ,STAGE-1

LANCO BABANDH POWER PRIVATE LIMITEDLANCO TECHNICAL SPECIFICATION FOR LP PIPING SYSTEMIKSPIRING UIWIH

1.00.00 ELECTRIC MOTOR ACTUATORS

1.01 TYPE:

1.01.1 The actuators shall have integral starters along with over load relays withbuilt in SPP (Single Phasing Preventer). A 415, 3 phase 3 wire powersupply shall be given to the actuator from vendor's switch board asapplicable through a distribution board. Control voltage of the motorstarter shall be 110 V AC / 24 V DC, derived suitably from 415V powersupply.

1.01.2 In case supplier's standard control voltage for Open/Close contactors is110V AC, the same is acceptable if suitable Opto- Isolation circuit isprovided with coupling relays for 24 V DC command inputs.

1.02 INTERFACES:

1.02.1 Open/Close command termination logic with position & torque LimitSwitches, positioner circuit shall be suitably built in the PCB inside theactuator.

(a) For Binary Drive:- Open/Close command & status thereof anddisturbance monitoring signal (common contact for Overload,Thermostat, control supply failure, L/R selector switch at local & otherprotections operated) shall be provided.Interface with the control system shall be through hardware signalonly. Inter posing relays provided (with coil burden 2.5 VA) in theactuator shall be energized to initiate opening and closing, by 24V DCsignal from the external control system.

(b) For Modulating Drive:- the command to actuator shall be in form of 4-20mA signal. The necessary positioning circuit and motor protectionshall be provided

(c) Open/close command termination logic shall be suitably built insideactuator.

1.03 RATING:

(a) Supply Voltage & frequency: 415V +/- 10%, 3 Phase, 3 Wire, 50Hz+3% -5%. Combined voltage and frequency variation 10% (abs) for3ph MOV.

(b) Sizing:-For Open/Close at rated speed against designed differential pressure at90% of rated voltaqe,For isolating service: - three successive open-close operations or 15mins, whichever is higher. For regulating service 150 starts per hour orrequired cycles whichever is hiqher.Motor margin on the shaft design power shall be 15% on motors.Motor shall be capable of starting at 80% of rated voltaqe.

1.04 PERFORMANCE:.•i. The actuators shall meet the following performance requirements:

lITl Doc. no. LITL-007-MEE-214-S-1107, Rev-O I VOL-I1-SEC-E1: 1

~2 X 660 MW,STAGE-l

LANCOBABANDHPOWERPRIVATELIMITEDLANCO TECHNICALSPECIFICATIONFORLPPIPING SYSTEMIWSlIJI 'RDWTH

ii. Open and close the valve completely and make leak tight valveclosure without jamming. -

iii. Attain full speed operation before actuator load is encountered andimpart an unseating blow to start the actuator in motion.

iv. Operate the actuator stem at standard stem speed and shallfunction against design differential pressure acr~ the actuatorseat.

v. The motor reduction gearing shall be sufficient to lock the shaftwhen the motor is de-energized and prevent drift from torqueswitch spring pressure.

vi. The entire mechanism shall withstand shock resulting from closingwith improper setting of limit switches or from lodging of foreignmatter under the actuator seat.

vii. The actuator shall essentially comprise of the drive motor, integralstarter, torque / limit switches, gear train, clutch, hand wheel(emergency manual operation), position indicator / transmitter, in-built thermostat for over load protection, space heater and internalwiring.

viii. The actuator enclosure shall be totally enclosed, dust tight, andweather proof suitable for out door use without necessity of anycanopy.

ix. All electrical equipment, accessories and wiring shall be providedwith tropical finish to prevent fungus growth.

x. The actuator shall be designed for mounting in any position withoutany lubricant leakage or operating difficulty.

1.05 CONSTRUCTION:(a) Enclosure:

Totally enclosed weatherproof minimum IP-67 degree of protection.(b) Gear Train:

Metal (Fiber gears are not acceptable)) self-locking to prevent driftunder torque switch (where ever applicable) spring pressure whenmotor is de-enerqised.

(c) Manual Wheel:

Shall disengage automatically during motor operation.1.06 MOTOR:

(a) Type:Squirrel cage induction motor suitable for Direct On Line (DOL)starting. Motor duty class shall be 52. Designed for high torque andreversing service. Nameplate shall be as per IS / NEMAMG1.

(b) Enclosure:Totally enclosed, self ventilated IP-67 degree of protection.

LITL Doc. no. LITL-007-MEE-214-S-1107, Rev-O I VOL-II-SEC-E1: 2

~2 X 660 MW ,STAGE-l

LANCOBABANDHPOWERPRIVATELIMITEDLANCO TECHNICAL SPECIFICATION FOR LP PIPING SYSTEMINSPIRINC UDWlK

(c) Insulation:Class F with temperature rise limited to B.

(d) Bearings:Double shielded, grease lubricated antifriction.

(e) Earth Terminals:Two

(f) Protection:Single Phasing Protection, Over heating protection throughThermostat and wrong phase sequence protection shall be providedover and above other protection features standard to bidder's designSuitable means shall be provided to diagnose the type of fault locally.

1.07 POSITION/TORQUE SWITCHES:

a) Four nos. (2 each in open and close position) position limit switchesand two nos. (One in open and other in close direction) torqueswitches each having two nos. NO and two nos. NC contacts shall beprovided. Contact rating shall be SA at 240V AC / O.SA 220 V DC. Asingle shaft shall actuate all contacts of limit switches at each position.

b) Limit switch for intermediate position shall be provided for theintermediate type valves.

1.08 LOCAL OPERATION:

It shall be possible to operate the actuator locally also. Lockablelocal/remote selection shall be provided on the actuator.

1.09 POSITION INDICATOR:

One built in local position indicator for 0-100% travel shall be provided oneach actuator. It shall be located so as to be readily visible from adistance.

1.10 POSITION TRANSMITTER (FOR MODULATING/INCHING TYPE):One position transmitter, for remote indication (output signal shall be 4-20mA) shall be provided. The position transmitter shall be of 2 wire typeand suitable for 24V power supply.

1.11 WIRINGSuitable voltage grade copper wire. All wiring shall be identified at bothends with ferrules.

1.12 TERMINAL BOX

(i) 9 pin plug and socket (1 no. per actuator to suit 4 pair 0.5 sq.cm.copper overall shielded (16 mm or». instrumentation cable)suitably mounted in the starter box itself to terminate open/closecommand and status feedback signals with external control

UTL Doc. no. UTL-007-MEE-214-S-1107, Rev-O I VOL-II-SEC-E1: 3