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
