Complete closed-type distribution substation KRPZ Integral-35
The complete distribution substation of the closed type KRPZ Integral-35 kV is intended for distributing the electrical energy of the alternating three-phase current at a voltage of 35 kV, at a frequency of 50 Hz with insulated neutral, and the extension of cable networks to power or air lines.
CONSTRUCTION AND OPERATING PRINCIPLE:
Features of the KRPZ Integral-35 substation:
- Block modular structure;
- Air/cable input/output;
- A version of a heated substation structure, a non-combustible material of a thickness of 50 to 100 mm shall be used as insulating and noise-reducing material;
- The sub-station is equipped with heating, ventilation and air conditioning.
- K (К) – complete
- R (Р) – distibutive
- P (П) – substation
- Z (З) – closed type
- Integral – Equipment Distinguishing Sign
- 35 – rated voltage, kV
- Т1 (U1, UHL1, HL1) – climatic performance for the regions:
- Tropical climates (from -100C to +500C) – T1;
- Temperate (from -400C to +400C) – U1;
- Temperate and cold climates (between -450C and +400C) – UHL1;
- Cold climate (from -550C to +300C) – HL1 (insulated).
Options for the HVD configuration:
- Fitted with vacuum or electric switches;
- Protection devices for domestic and foreign manufacturers are used.
Options for Local Needs LVDD:
- Transformer of own needs;
- A closet of personal needs;
- An operating current cabinet;
- A central alarm cabinet;
- Low-voltage complete devices for heating and ventilation;
- fire alarm cabinet.
- Altitude not exceeding 1000 m;
- Climate performance according to GOST 15150 T1, U1, UHL1, HL1;
- A non-explosive environment free of conductive dust, aggressive gases and vapours, which destroys metals and insulates.
| Name | Value |
|---|---|
| Rated voltage (linear), kV | 35 |
| Maximum working voltage, kV | 40,5 |
| Main circuits rated at 50 Hz, A | 630; 1000; 1600; 2500 |
| Rated high voltage switch off at 50 Hz, kA | 20; 25; 31,5; 40; 50; 63; 80; 100 |
| Current of electrodynamic resistance, kA | 51, 81 |
| Current of thermal resistance, kA | 20; 25; 31,5; 40 |
| Test voltage of industrial frequency, kV | 85,5 |
| Rated power of power transformers, kVA | 25; 40; 63 |
| Rated voltage of auxiliary circuits, V: | |
| - AC control and signalling protection circuits | =110, =220, ~220 |
| - voltage transformer chains (protection, measurement, accounting) | ~100 |
| - light circuits inside cells | ~36 |
| - light circuits inside the substation | ~220 |
| GOST isolation level | normal |
| Insulation type | air/combined |
| Insulation of electrically conductive tyres | with insulated collar |
| Degree of protection under GOST 14254-96 | |
| - KRPZ INTEGRAL | IP43 |
| - Built-in equipment (open door) | IP10 |