Vishal Parwal

***** structure for equipment mounting. 2. 33 KV 3-Phase Isolator, 400 A Double Break with earth blade complete and all accessories and fabrication, supply of earthed, grouted support structure as per TS. 3.33 KV, 10 KA single phase LA/Surge Arrestor complete with insulating terminal connector, foundation and structure required for erection as per TS. 4.33 KV Outdoor vacuum Circuit Breaker (1250 Amp rms), 25 KA rupturing capacity 3-phase with spring type operating mechanism along with terminal box, marshalling box, mounting structure and all accessories as per TS 5.33 KV C& R Panel for feeder consisting of two nos. over current relay one earth fault relay, master trip (lock out type), of 5 amp, 110 v DC along with AC & Dc fail indicator with buzzer, supervision of pre and post close trip circuit healthiness indicator with push button, CB open and close indicator, spare for low gas pressure & lock out indication, 110 V AC, 3-phase 4-wire electronic tri-vector meter, digital ammeter, voltmeter, space heater and illuminating unit, control cable of about 350 mtr. and terminating arrangement completely wired and suitable for installation at Control room. 6.33KV, 200-100/5-5-5 rating Outdoor 1-Phase Current Transformer along with terminal box, marshalling box, mounting structure and all accessories with terminal connectors for required accessories complete including earthing & grouting of support structures as per TS ***** type 33 KV/110 V Potential Transformer along with terminal box, marshalling box, mounting

structure and all accessories along with terminal connectors required accessories complete including earthing & grouting of support structures as per TS. DISTANCE, OVERCURRENT AND EARTH FAULT PROTECTION The digital protection device UTXvZ is a distance protection relay designed to protect high voltage overhead lines and cables working with an earthed neutral point. It provides fast, selective and reliable switching off of the high-voltage line if any kind of fault occurs, whether in between the phases or earth fault. The basis for the reliable operation is a fast and precise measurement of the loop impedance and the simultaneous calculation of the fault location. The device is equipped with 16- or 14-bit A/D-converters and different communication interfaces: RS-232, RS-485 according to the IEC 870-5-103 standard, optical waveguide and/or TCP/IP.

DIFFERENTIAL CURRENT POWER TRANSFORMER PROTECTION ZTR 5 ZTR 5 is a fully microprocessor controlled differential protection device for power transformers with 2, 3 or 4 windings. It is an integrated universal digital protection relay containing program modules which permit to adjust the protection functions flexibly. It ensures protection against phase-to-phase short-circuits and earth faults through a current-differential stage with fully programmable stabilizing characteristics. Additionally second and fifth harmonic detectors can be used to inhibit and to block the current-differential stage. By means of the fully digital information processing ZTR 5 permits to enter the parameters of the transformer as well as to calibrate the current transformers within the protection device on the level of program configuration. The protection device ZTR 5 typically contains independent field terminals which make up the transformer’s synoptic panel from both the HV and MV sides combined with a graphic display, a remote control possibility and local control of all switches ( recloser, earth switch, disconnector). The device is also equipped with diagnostic functions as well as universal, freely programmable functions, which makes it possible to adapt them to non-standard requirements. ZTR 5 fulfills also a function of distributed telemechanics, which enables

remote control, readout of measured values and binary inputs as well as the status of the protection device. As a standard, every device owns an events and faults journal. The device has a clear customer’s interface, which consists of a graphic or alphanumeric display, 16 signalling LED diodes and a keyboard. Each device typically has two independently working protocols: firm protocol XMD-CCbus as well as IEC 870-5-103, that in combination with a station concentrator can make up a power network dispatcher system.

The protection device ZTR 5 can be produced in three types of housings: • • •

ROLEK – to be mounted on the board or behind the board ( 6 or 12 analog inputs, 14 or 25 binary inputs, 8 or 24 binary outputs) cassette 3U, 63 or 84 – to be mounted behind the board ( 7 or 16 analog inputs, 11 or 26 binary inputs, 16 or 24 binary outputs) CPRO 63 or 84 – to be mounted on the board (7 or 16 analog inputs, 11 or 26 binary inputs, 16 or 24 binary outputs)

UNIVERSAL MEDIUM VOLTAGE PROTECTION RELAY The protection relay UTXvL is designed to protect the HV and MV field, working with the neutral point in any configuration. It provides fast, selective and reliable switching when any type of short circuit (phase-to-phase or earth-to-phase) occurs. The basis for the reliable operation and security is a fast and precise measurement of the analog signals and precise calculation of the voltage, current and earth admittance vectors. The device is equipped with 14-bit A/D converters and serial transmission interfaces (RS 232, CL, and IEC 870-5-103). Both fiber optic and ethernet TCP/IP communications are supported. The protection relay UTXvL is designed to protect HV and MV fields such as field cable and overhead lines, the HV side of a transformator field, the principal’s own needs, the field coupling capacitors and the battery box.

MULTIFUNCTION PROTECTION RELAY Protection ZSN 5 L is fully microprocessor device intended to protect field of medium ad high voltage switching station. It is integrated universal protection of field, containing program moduls for protection and automatics, which permit flexible adapting of protection to the given field requirements. It ensures a complex protection from phasephase short circuits : I1>, I2>, I3>, I4>, to-earth short-circuits: Io1>, Io2>, Iok1>, Iok2>,

RGo, RBo, RYo, RYYo, Uo1>, Uo2>, control of phase voltages U1>, U2>, U1<, U2<, SCO1, SCO2, SPZ/SCO, phase exciting and decay. Contains automatics: SPZ, AWSCz, ABK, SPZ/SCO as well as system of readiness signalling and breaker’s continuity, current and voltage asymetry and so on. Protection ZSN 5 L typically contains independent field terminal, which, combined with graphic display, makes up the full field’s synoptic panel, with a possibility of remote control and local control of all the switches ( recloser, earth switch, disconnector) in the field. The device is additionally equipped with diagnostic functions as well as universal, freely programmable functions, possible to adapt them to non-standard requirements. ZSN 5 L fulfills also a function of distributed telemechanics, which enables remote control, readout of measured values and binary inputs as well as the status of protection device. As standard, every device owns events and faults journal. The device has a clear customer’s interface, which consists of graphic or alphanumeric display, 16 signalling LED diodes and the keyboard. Each device conforms with two independently working protocols: firm protocol XMD-CCbus as well as IEC 870-5-103, that in combination with station concentrator, can make up power network dispatcher system.

MULTIPORPOSE BAY TERMINAL Protection ZSN 5 L+ is fully microprocessor device intended to protect field of medium ad high voltage switching station. It is integrated universal protection of field, containing program moduls for protection and automatics, which permit flexible adapting of protection to the given field requirements. It ensures a complex protection from phasephase short circuits : I1>, I2>, I3>, I4>, to-earth short-circuits: Io1>, Io2>, Iok1>, Iok2>, RGo, RBo, RYo, RYYo, Uo1>, Uo2>, control of phase voltages U1>, U2>, U1<, U2<, SCO1, SCO2, SPZ/SCO, phase exciting and decay. Contains automatics: SPZ, AWSCz, ABK, SPZ/SCO as well as system of readiness signalling and breaker’s continuity, current and voltage asymetry and so on. Protection ZSN 5 L+ typically contains independent field terminal, which, combined with graphic display, makes up the full field’s synoptic panel, with a possibility of remote control and local control of all the switches ( recloser, earth switch, disconnector) in the field. The device is additionally equipped with diagnostic functions as well as universal, freely programmable functions, possible to adapt them to non-standard requirements. ZSN 5 L+ fulfills also a function of distributed telemechanics, which enables remote control, readout of measured values and binary inputs as well as the status of protection device.

As standard, every device owns events and faults journal. The device has a clear customer’s interface, which consists of graphic or alphanumeric display, 16 signalling LED diodes and the keyboard. Each device conforms with two independently working protocols: firm protocol XMD-CCbus as well as IEC 870-5-103, that in combination with station concentrator, can make up power network dispatcher system.

VOLTAGE INSTRUMENT TRANSFORMERS BAY TERMINAL Protection ZSN 5P is fully microprocessor device intended to protect measured field of medium voltage switching station. It is integrated universal protection of measured field, containing program protection moduls as well as program moduls for automatics, which permit flexible adapting of protection to the given field requirements. It ensures a complex protection from increase and drop of phase voltages and to-earth voltage: U1>, U2>, U1<, U2<, Uo1>, Uo2>, phase exciting and decay, under- and overfrequency protection: SCO1, SCO2, SPZ/SCO

MULTIMODE LOAD SHEDDING CONTROLLER Automat ZSN 5 R is fully microprocessor device intended to protect medium voltage switching station from power supply decay. It is integrated universal automation system (SZR), containing program moduls of automatics as well as moduls of automat’s status control, which permit flexible adapting of automat to the given switching station requirements. It ensures a complex protection of switching station from power supply decay as well as from switching off the switching station’s feeding line main breaker. Automat ZSN 5 R contains as standard independent field terminal, which, combined with graphic display, makes up the full synoptic panel of MV switching station main switching elements with a possibility of remote control and local control of all the switching elements. The device is additionally equipped with diagnostic functions as well as universal, freely programmable functions, possible to adapt them to non-standard requirements. ZSN 5 R fulfills also a function of distributed telemechanics, which enables remote control, readout of measured values and binary inputs as well as the automat’s status. As standard, every device owns events and faults journal. The device has a clear customer’s interface, which consists of graphic or alphanumeric display, 16 signalling LED diodes and the keyboard. Each device conforms with two in paralell working protocols: firm protocol XMD-CCbus as well as IEC 870-5-103, that in combination with e.g. station concentrator can make up power network dispatcher system.