1 General information

1.1 Cabinets (panels*) of ПСН 1100 series and derived boards are applied for provision of power supply of service consumers with voltage of 0.4 kV, 50 Hz from service transformers with capacity of 250 kVA, 400 kVA, 630 kVA, 1000 kVA, substations with voltage of up to 750 kV for the facilities under construction and under reconstruction or for replacement of old or broken panels of ПСН1100 series.

1.2 ПСН1100-ЭК cabinets are manufactured for operation in four-wired system of power supply.

1.3Structurally cabinets are the closed volumetric metallic structures with the devices installed inside and the accomplished electric connections. Cabinets’ maintenance is two-sided. On the maintenance side there is a single-wing door, on the back side there is either two-wing or single-wing door. Cabinets make it possible to install them on the cable channel or in apertures, cables lead-in is from the down side.

Overall dimensions of cabinets (height х length х depth):

  • up to 1600 А is 2200x700x600;
  • over 1600 А is 2200x900x600.

Cabinet weight is no more than 320 kg.

1.4 Voltage of the main circuit is 380 V, 50 Hz, that of the auxiliary circuit is 220 V, 50 Hz, electrodynamic stability is no less than 50 kA, thermal stability is no less than 23 kA2s.

1.5 According to functional designation ПСН 1100- ЭК cabinets are divided into:

  • lead-in and sectional connection of transformers with capacity of up to 250 kVA – standard performance is ПСН1101-ЭК;
  • lead-in from transformer with capacity of 400, 630 kVA - standard performance is ПСН1102-ЭК;
  • lead-in from transformer with capacity of 630, 1000 kVA - standard performance is ПСН 1103-ЭК;
  • lead-in from evident backup transformer with capacity of 630, 1000 kVA – standard performance is ПСН1104-ЭК;
  • sectional connection of non-evident backup of transformers with capacity of 400 kVA, 630 kVA, 1000 kVA - standard performance is ПСН1105-ЭК;
  • sectional connection of evident backup transformer with capacity of 630 kVA, 1000 kVA - standard performance is ПСН1106-ЭК;
  • lead-in for buses of transformer with capacity of 400 kVA, 630 kVA – standard performance is ПСН1107-ЭК;
  • lead-in for buses of transformer with capacity of 630 kVA, 1000 kVA - standard performance is ПСН1108-ЭК;
  • sectional connection and outgoing circuits - standard performance is ПСН1109-ЭК;
  • outgoing circuits - standard performance is ПСН1110-ЭК, ПСН1111.1(2, 3) -ЭК, ПСН1112.1(2, 3) -ЭК, ПСН1113.1(2, 3) -ЭК;
  • outgoing circuits and tracers - standard performance is ПСН1114.1(2) -ЭК;
  • tracers - standard performance is ПСН1115.1(2, 3);
  • outgoing circuits and power energy accounting - standard performance is.1(2, 3) -ЭК;

Note. Number of outgoing circuits is no more than 12.

1.6 In accordance with functional designation ПСН1100-ЭК cabinets generally provide:

  • reception of power energy from service transformers;
  • automated or manual turn on of sectional breaker upon disappearance or unacceptable lowering of voltage on one of the lead-ins;
  • distribution of power energy among service consumers;
  • protection of power supplying and outgoing circuits from short-current circuits and overloads;
  • measurement of voltage and current of power supplying lines and current of outgoing circuits;
  • consumed energy accounting;
  • alarm of the operating and switched off modes of protective and commutation elements.

1.7 Basic technical data for the choice of ПСН 1100-ЭК cabinets are provided in tables 1, 2.

2 Complete set

The delivery package includes:

  • low voltage distribution switchboard (ПСН1100-ЭК cabinet or board consisting of ПСН1100-ЭК cabinets);
  • set of spare parts;
  • set of operational documentation.

3 Order formation

3.1 Order for manufacture and delivery of ПСН1100-ЭК cabinet or board consisting of ПСН1100-ЭК cabinets is made on the form of configuration data sheet or in any other form with indication of all the issues mentioned in the configuration data sheet.

There must be indicated the language for operational documentation execution and the necessity to deliver control chart of automated breakers pickup settings.

3.2 Any other Customer’s requests are to be agreed in the contract (agreement) for manufacture and delivery.

Note 1. Boards from ПСН1100-ЭК cabinets can be supplied both stacked (up to five cabinets) and as separate cabinets prepared for stacking into unite board on the assembly site that is to be agreed when ordering.

Note 2. When ordering ПСН1100-ЭК cabinets for replacement it is allowed to indicate the old type (standard performance) of cabinet.

Note 3. In some cases (during design from scratch) it is allowed to provide just single-line scheme of board (without division into cabinets) with the indication of the number of lead-ins, capacities of service transformers, section breakers and their nominal currents, number of outgoing circuits and currents.