12KV Box Type Fixed Ring Main Unit
The HXGN66-12 type fixed metal-enclosed switchgear (hereinafter referred to as the switchgear) is a new high-voltage electrical complete set product launched by our company.
Product Overview
The HXGN66-12 type fixed metal-enclosed switchgear (hereinafter referred to as the switchgear) is a new high-voltage electrical complete set product launched by our company. It complies with the national standard GB/T3906 '3.6kV-40.5kV AC Metal-Enclosed Switchgear and Control Equipment' and the Ministry of Electric Power standard DLT404 'Technical Conditions for Ordering Indoor AC High-Voltage Switchgear', and also meets the international standard IEC60298 'Requirements for AC Metal-Enclosed Switchgear and Control Equipment for voltages above 1kV and below 52kV'.
This product incorporates foreign standard technologies. It is compact, only 50% the size of ordinary switchgear; the circuit breaker is highly reliable and performs well; and the 'five-proof' interlocking mechanism is reliable and simple. The switchgear is an indoor complete device for three-phase AC 50Hz single-bus segment operations at 3.6, 7.2, and 12kV, used for receiving and distributing electrical energy. It also provides functions for circuit control, protection, and monitoring. It can be used in various power plants, substations, industrial and mining enterprises, high-rise buildings, and other locations, and can also be used in combination with ring main units in switching stations.
Technical Parameters
| No. | Project | Unit | Technical parameter |
|---|---|---|---|
| 1 | Nominal voltage | kV | 3.6, 7.2, 12 |
| 2 | Rated power frequency withstand voltage | kV | Ground, interphase: 42; fracture: 48 |
| 3 | Rated lightning impulse withstand voltage | kV | Ground, interphase: 75; fracture: 85 |
| 4 | Rated frequency | Hz | 50 |
| 5 | Rated current | A | 630, 1250 |
| 6 | Rated short-circuit breaking current (effective value) | kA | 20, 25, 31.5 |
| 7 | Rated short-circuit closing current (peak value) | kA | 50, 63, 80 |
| 8 | Rated dynamic stable current (peak value) | kA | 50, 63, 80 |
| 9 | The rated thermal stability current is 4s (effective value) | kA | 20, 25, 31.5 |
| 10 | The protection grades | — | IP2X |
| 11 | Overall dimensions (width × depth × height) | mm | 900×1000×2300 |
| 12 | Weight | kg | ≈ 600 |
Structure Diagram
