Audited Supplier
JN15-12/31.5-210mm
ISO9001
Steel Plate
Medium Voltage
Fixed
Cabinet
DC
12kv
42 Kv
75 Kv
31.5ka
qiupu
Carton
210mm
Cn
8538900000
Product Description
The earthing switch may carry the rated short circuit current and the corresponding peak current in the specified time under the abnormal condition(e.g. short circuit); Under normal working conditions, however, no rated current is required.Ground switches and isolation switches are often combined into one device. At this point, in addition to having the main contact, the isolation switch is also equipped with a grounding switch for grounding one end of the isolation switch after separation. The main contact and ground switch are usually interlocked in such a way that the ground switch can not close when the isolation switch is closed and the main contact can not close when the ground switch is closed.
The ground switch can be divided into open type and closed type. The former's conductive system is exposed to the earth gate in the atmosphere, which is similar to the isolation switch, while the latter's conductive system is closed to the SF charge.
The normal working ground during the maintenance of the line. When the circuit breaker is in need of maintenance, the circuit breaker is in the position of separation, both sides of the isolation switch are open, in the state of separation. Earthing switch closing for normal working grounding. To ensure the safety of equipment and maintenance personnel.
(2) meet the electrostatic and electromagnetic induction current. In an overhead transmission line with two or more towers or adjacent parallel configurations, the induction voltage and the induction current will be generated in the circuit of the power outage due to electromagnetic and electrostatic induction between it and the adjacent electrically charged line when one or more lines are out of power. Therefore, it is used for grounding switches on such lines.
| Item | Technical data | ||||||||||||
| Rated voltage (KV) | 3.6 | 7.2 | 12 | 24 | 40.5 | ||||||||
| Rated frequency(Hz) | 50 | ||||||||||||
| Insulator(capacity) | insulating | Frequency withstand voltage 5 min (KV) | 25 | 32 | 42 | 68 | 100 | ||||||
| Frequency withstand voltage 1 min (V) | 2000 | ||||||||||||
| Lighting impulse withstand voltage (KV) | 40 | 60 | 75 | 125 | 185 | ||||||||
| Local discharge (pc) | ≤10 | ||||||||||||
| Dispute bend (N) | ≥1000 | ||||||||||||
