XGN66-12 Fixed-type (Indoor) Closed Switchgear
PRODUCT DESCRIPTION
XGN66-12 fixed-type closed switchgear (hereinafter referred to as switchgear) is a new generation of high-voltage electrical product of our company, in line with requirements of n
PRODUCT DESCRIPTION
XGN66-12 fixed-type closed switchgear (hereinafter referred to as switchgear) is a new generation of high-voltage electrical product of our company, in line with requirements of national standards GB3906 "-35KV AC metal-enclosed switchgear", Electric Department's DLT404"ordering technology conditions of indoor AC high-voltage switchgear", and also meets the international standard IEC62271" requirements of AC metal-enclosed switchgear and control equipment of 1KV above 52KV"
The product absorbs foreign advanced technology. It is small, only 50% of the size of ordinary switchgear; the circuit breaker has with high reliability and good performance: "five anti" interlocking machinery is reliable, simple and so on. The switch cabinet is indoor equipment of 3.6,7.2,12KV three-phase AC 50Hz single bus segment, for the acceptance and distribution of electrical energy. And it has circuit control, protection and monitoring functions, which can be used in various types of power plants, substations and industrial and mining enterprises, high-rise buildings and other places, and also in the ring network cabinet with ring main unit.
Model and Meaning
The Main Technical Parameters
Switchgear's main technical parameters and component models
| No. | Item | Unit | Technical parameters |
| 1 | Rated voltage | KV | 3.6,7.2,12 |
| 2 | Rated power frequency withstand voltage | KV | the ground,the same: 42; fracture: 45 |
| 3 | Rated lightning impulse withstand voltage | KV | the ground, the same: 75; fracture:85 |
| 4 | Rate frequency | Hz | 50 |
| 5 | Rated current | A | 630,1250 |
| 6 | Rated short circuit breaking current(peak) | KV | 20,25,31.5 |
| 7 | Rated short circuit closing current (peak) | KV | 50,63,80. |
| 8 | Rated dynamic stable current (peak) | KV | 50,63,80 |
| 9 | Lightning electric stable current 4S(RMS) | KV | 20,25,31.5 |
| 10 | Protection class | 1P2X | |
| 11 | Dimensions (W × D× H) | mm | 900X1000X2300 |
| 12 | Weight | Kg | -600 |
Main technical parameters of ZN63-12type vacuum circuit breaker
| No. | Item | Unit | Technical parameters |
| 1 | Rated voltage | KV | 12 |
| 2 | Rated current | A | 630,1250 |
| 3 | Rated short circuit breaking current | KV | 20,25,31.5 |
| 4 | Rated short circuit closing current | KA | 50,63,80 |
| 5 | Rated short-time withstand current(4S effective value) | KA | 20.25,31.5 |
| 6 | Rated peak withstand current (peak) | KA | 50,63,80 |
| 7 | Mechanicallife | Time | 10000 |
| 8 | Rated short-time breaking current breaking times | Time | 50 |
| 9 | Rated operating sequence | o-0.3s-c O-180s-C o | |
| 10 | Contact head distance | mm | 11±1 |
| 11 | Contact contact stroke | mm | 4±0.5 |
| 12 | Interphase center distance | mm | 210 |
| 13 | Opening speed | m/s | 1.2±0.2 |
| 14 | Closing speed | m/s | 0.6±0.2 |
| 15 | Opening time | ms | ≤60 |
| 16 | Closing time | ms | ≤75 |
| 17 | Three - phase opening synchronization | ms | ≤2 |
| 18 | Closing bounce | ms | ≤2 |
| 19 | Loop resistance | µΩ | ≤45 |
| 20 | Accumulated allowable wear thickness of contact head | mm | 3 |
Layout Diagram
