Customization: | Available |
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Certification: | CCC, ISO9001 |
Shell Material: | Aluminum Alloy |
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Mainly applicable in urban power grid construction and renovation project. industrial and mining enterprises.high-rise buildings and communal facilities .For power distribution .controlling and protection on electric equipment as the loop power supply unit or termina equipment. It also can be installed in preloaded substation
Feature:
Use SF6 load switch and load switch-fuse combination as main switch. Equipped with vacuum load switch and spring operating mechanism which can be operated by hand or electric. Earthing switch and insulating switch are equipped with hand operating mechanism. With small volume and high security
1.Many years ring mian unit manufacturer
2.Easy installation
3.Less maintance
4.Safe and upgradeable
No. | Item | Unit | Data |
1 | Rated voltage | kV | 7.2/12 |
2 | Rated current of main bus-bar | A | 630 |
3 | Rated current of incoming | A | 630 |
4 | Rated current of outgoing | A | 125 |
5 | Rated short time withstand current 4s | kA | 20 |
6 | Rated withstand current (peak) | kA | 31.5 |
7 | Rated short circuit making current(peak) | kA | 50 |
8 | Rated active load breaking current | A | 630 |
9 | Rated closed loop breaking current | A | 630 |
10 | Rated cable charging current | A | 10 |
11 | Earth switch rated short time withstand current 2s | kA | 20 |
12 | Earth switch rated withstand current (peak) | kA | 50 |
13 | Earth switch rated short circuit making current (peak) | kA | 50 |
14 | Rated AC current of the combination | A | 3150 |
15 | 1 min power frequency withstand voltage | kV | 42/48 |
16 | Lightning impluse withstand voltage | kV | 75/85 |
17 | Mechanical life of Vacuum load breaker | times | 10000 |
18 | Mechanical life of Disconnector | times | 2000 |
19 | Load breaker average closing speed | m/s | 0.6±0.2 |
20 | Load breaker average opening speed | m/s | 1.1±0.2 |
21 | Load breaker three phase asynchronous | mS | ≤2 |
22 | Protection class | IP3X |