Low-voltage complete devices

Terminal cabinets ShZV, ShZVK, ShZN, ShPV, ShPVK, ShRP, YaZ.

Function and field of application

Low voltage complete devices are designed for switching equipment control, as well as for protection and performance control of electrical equipment.

Brief technical description

Outdoor low voltage complete devices for outdoor switchgears are performed as cabinets of different kitting-up and different overall dimensions.

Device type

Function and field of application

Overall dimensions, mm

Weight, kg

ShZV 60, ShZV 90, ShZV 120, ShZV 200

Intended for connection of open switchgears 35-220 kV secondary circuits. Power knife switches and sectioning of block circuits switches are placed in the cabinet. Cabinets differ in number of terminals.

600x500x260

900x600x260

53

ShZVK 1

Intended for power supply of a breaker actuating electromagnet with phase-by-phase drive (if there are two supply cables in the ring)

900x600x260

50

ShZVK 2

For connection of control electromagnet circuits and its protection in the open-phase mode of the breaker

900x600x260

50

ShZN 1A

For connection and distribution of secondary circuits of voltage transformers, that are installed at: transmission lines 330-500 kV; busbars 110-500 kV; HV side of autotransformers on substations with breaker-and-a-half scheme and polygon schemes.

900x600x260

53

ShZN 1B

The same as ShZN 1A, but without automatic breaker for voltage circuits protection.

900x600x260

53

ShZN 2

For connection and distribution of secondary circuits of voltage transformers, that are installed: at the buses 35 kV; at the HV side of autotransformer (transformer); buses of turbogenerator.

900x600x260

53

ShZN 3

For connection and distribution of secondary circuits of voltage transformers, that are installed at: transmission lines 35 kV; transfer busbars 110-220 kV; 35 kV side of autotransformer (HV-110,220kV) and other voltage transformers without additional secondary windings.

900x600x260

53

ShPV

For power supply of actuating electromagnet of the breaker with three-phase drive (if there is one or two supply cables in the ring)

900x600x260

50

ShPVK

For power supply of actuating electromagnet of the breaker with phase-by-phase drive (if there are two supply cables in the ring)

900x600x260

50

ShRP4, ShRP8

For 4 (8) slave relays of breaker (also separator, or short circuitor) auxiliary contacts in schemes of operative blocking system of disconnectors.

900x600x260

YaZ-30, YaZ-60

For connection of electrical circuits and heating system. Cabinets differ in number of terminals.

600x500x260

30

Low-voltage switchgear is fulfilled on the basis of xEnergy electrical cabinets, produced by Moeller Group. The cabinets are completed into the sections. Sections are located in two rows and connected to each other with busbar bridge.

The cabinets are of single-sided service and operative control elements are accessible on the front side.

Entrance lead and busbar of the low-voltage switchgear are designed for transformer rated current with the coefficient 1.3 according to GOST 14695-80.

There are voltmeter (for linear voltage measuring) and amperemeter (for each phase currents measuring) in power entrance cabinet. Devices class of accuracy is 1.5. Also three-phase meters of active and reactive power are installed here.

Current transformers are mounted on the outgoing lined in the LV switchgear for connection of amperemeters.

At the LV side the following scheme is used: one bus system, sectioned with sectionalizing breaker. The sections work apart, and the sectionalizing breaker is normally tripped off.

Variants of reserve switching device realization provide fulfillment on the basis of Moeller Group apparatus, using EASY-type control relay and on the basis of multifunctional microprocessor block of relay protection and automatics BMRZ-04, produced by NTC Mekhanotronika.

The main technical data

Parameter designation

Dimension

Rated voltage, V

690

Rated current, A

max. 4000

Short-time withstand current, kA

max.100 (1s)

Protection degree

IP31/IP55

Overall dimensions, mm

height

2000 (without base)

width

425/600/800/1000/1200

depth

400/600/800

IZM1 automatic breakers are used as inlet and sectionalizing switching units. NZM1, NZM2, NZM3 automatic breakers, produced by Moeller Group, are used as feeder switching units. There are three executions of them: stationary, plug-in and draw-out. Automatic breakers of plug-in and draw-out execution provide their prompt replacement and adjustment without section or cabinet cut-off.

Panel of distributing boards ShchO 70

Three-phase switchgears of single valve power and control supply RTZO

Lead-in distributors VRU

Power cabinets (relay) YaS (YaR), ShS (ShR)

Energy cabinets YaE, ShE

Control cabinets ShO, ShD

Alternating current switch panels and cabinets PSN

Control, measuring and automation shields

Main distribution shields for dwelling houses GRShD

Control console PRR, PRP

Special control panel

Distribution centers PR

Cabinets for power supply of thermal treatment transformers ShTO

Switching nodes

Cabinets of asynchronous drive control Ya5000

Outdoor low voltage complete devices for outdoor switchgears YaZ, ShZ, ShZV

Breaker protection cabinet ShZV

Cabinet of disconnector drive control ShUR

Cabinets of voltage transformers protection ShZN

Cabinets of busbars protection ShZSh

Cabinets of breaker drive power supply YaPV, YaPVM, ShPV

Cabinets of breaker heating ShOV

Power distributive cabinets ShRS

Distributive cabinets with safety fuses RTSP, automatic breakers RTSA

Group light shields OShchV