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Description
FN12-12RD indoor high-voltage load switch is a three-phase high-voltage switchgear with a rated voltage of 12kV and a rated frequency of 50Hz. It is used for switching load currents, closed loop currents, and no-load transformers.
And cable charging current. Close the short-circuit current, the load switch equipped with the grounding switch can withstand the short-circuit current. It is mainly used in the urban power distribution station and industrial power equipment of the three-phase ring network terminal for load control and short-circuit protection.
Contact by Email: sales@zfemcl.com
描述
Product feature
This load switch is a fuse electrical appliance, suitable for 12KV and below three-phase power distribution system, as the control and protection of power equipment such as transformers, cables, overhead lines, etc.; especially suitable for terminal substations and agricultural networks in urban networks and agricultural networks. Box-type substation.
1. Installation way: front-mounted, side mounted, flip mounted;
2.Operating mechanism: spring operating mechanism, manual type and electrical type available;
3. Operation type: right operation and left operation;
4. Application: indoor 12kv switchgear.
2.Operating mechanism: spring operating mechanism, manual type and electrical type available;
3. Operation type: right operation and left operation;
4. Application: indoor 12kv switchgear.
The main function
Load switch, grounding switch, fuse and mechanism are in one frame, which can be flexibly combined, compact structure, small size, convenient and simple installation;
With a static contact insulation cover, the ring network cabinet is structurally isolated, eliminating the need for phase insulation partitions and fracture insulation inserts, which can prevent arc short-circuit accidents in the cabinet; after the load switch is opened, the valve automatically breaks Isolation, good protection performance;
There is a reliable mechanical locking device between the load switch and the grounding switch and the fuse to meet the “five prevention” requirements;
There are two forms of manual operation and electric operation with AC and DC power supply, which is convenient to realize the “three remote” requirements of the power system
| serial number | project | unit | FKN12-12/630 | FNR12-12/630 |
| 1 | Rated voltage | kV | 12 | |
| 2 | Recharge frequency | Hz | 50 | |
| 3 | Rated current | A | 630 | 100 |
| 4 | Lightning impulse withstand voltage | kV | 75′ isolation fracture between ground and phase 85 | |
| 5 | 1min power frequency withstand voltage | kV | To the ground and between phases 42, Isolation fracture 48 | |
| 6 | Rated thermal stability current | kA | ||
| 7 | Rated dynamic stability current | kA | 50 | |
| 8 | Ege close current (female) | kA | 50 | |
| 9 | Rated short-circuit breaking current (expected value) | kA | 31.5 | |
| 10 | Rated transfer current | kA | 1.5 | |
| 11 | Breaking no-load transformer capacity | kVA | 1250 | |
| 12 | Rated cable charging current | A | 10 | |
| 13 | 13 Rated active load current breaking times | times | 10000 | |
| 14 | The opening time of the load switch triggered by the striker | s | ＜0.06 | |
| 15 | Grounding switch thermal stability current | kA | 20（2s） | |
| 16 | Earthing switch dynamic stable current (peak value) | kA | 50 | |
| 17 | Operating mechanism power supply voltage | AC and DC 100, 200 AC-DC 100, 200 | ||
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