Prefabricated Chambers of Unilateral Service PCUS-393-M
Prefabricated Chambers of Unilateral Service PCUS-393 and bus bridges are installed in switchgear assemblies with a rated voltage of 10 (6) kV and are designed for the distribution of 50 Hz alternating current electrical power.
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The list of Prefabricated Chambers of Unilateral Service (PCUS), bus bridges, circuit diagrams, and brief technical characteristics is provided in Table 1.
The general arrangement and overall dimensions are shown in Figure 1.
Climatic version: U3 in accordance with GOST 15150.
Degree of protection in accordance with GOST 14254:
- IP30 — for the front side of the enclosure (with the doors closed) and the side walls of the chambers.
- IP00 — for the remaining chamber sections.
The switchgear assembly complies with TU U 27.1-45149048-002:2024.
To order a Prefabricated Chamber of Unilateral Service (PCUS), a completed technical questionnaire specifying the required equipment parameters must be submitted.
| Parameter | Value |
|---|---|
| Rated voltage (line-to-line), kV | 6; 10 |
| Maximum operating voltage, kV | 7.2; 12 |
| Rated power supply frequency, Hz | 50 |
| * Rated current of main circuits, A: | |
| - busbars | 630 |
| - chambers with load-break switches | 630 |
| - chambers with disconnectors | 630 |
| - chambers with fuses | see below |
| - bus bridges | 630 |
| * Fuse-link rated current, A: | |
| at Un = 6 kV | 31.5; 50; 80; 100; 125 |
| at Un = 10 kV | 31.5; 40; 63; 80; 100 |
| Electrodynamic withstand of main circuits, kA | 41 |
| Thermal withstand of main circuits, kA | 16 |
Note: * the rated current of the chamber or bus bridge corresponds to the rated current of the incoming device or the rated current of the fuse link.
| Name and Type | Application | Electrical Parameters | Weight, kg | |
|---|---|---|---|---|
| U, kV | I, A | |||
| PCUS-393-M | Line chamber with disconnector | 10 | 630 | 140 |
Table 1.2 Chamber Types
| Chamber Type | Single-Line Diagram | Type of Main Device |
| PCUS-393-M | Diagram 1 | VVNA-Pp-10/630; PT; OPNp-10 |