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JN15-12DD-150mm Indoor Electric Earthing Switch
2.Rated Frequency: 50/60Hz
3.Rated short time withstand current 31.5kA
4.Rated withstand current (peak):80 kA
5.Installation method: Center-mounted hardcart or fixed cabinet
6.Adapter cabinet: KYN28-12 series switch cabinet, specially designed fixed cabinet
7.Products comply with the standards: GB/T1985, GB/T 11022, IEC 60129;
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Product Introduction
The JN15-12DD indoor high-voltage grounding switch is an intelligent grounding switch based on the JN15-12 series manual grounding switch. It is mainly designed to provide the convenience of remote unmanned control. Currently, it accounts for more than 70% of the State Grid projects. After comprehensive assessment, its performance meets the technical standards of GB/T1985 "AC High-voltage Disconnectors and Grounding Switches" and IEC 129. It is suitable for AC power systems of 12kV and below, and can be used with various standard high-voltage switch cabinets as grounding protection.
Product Specifications
|
No. |
Name |
Unit |
Data |
|
1 |
Rated Voltage |
kV |
12 |
|
2 |
Rated Frequency |
Hz |
50/60 |
|
3 |
Rated short time withstand current |
kA |
31.5 |
|
4 |
Rated withstand current (peak) |
kA |
80 |
|
5 |
Rated duration of short circuit |
s |
4 |
|
6 |
Rated powder frequency withstand voltage |
kV |
42 |
|
7 |
Rated lightning impulse withstand voltage |
kV |
75 |
|
8 |
Mechanical endurance |
Times |
3000 |
| 9 | Gap distance between the opening |
mm |
≥125 |
| 10 | Phase center distance |
mm |
150 |
Product Advantages
JN15-12DD-150mm Indoor electric earthing switch has many advantages:
The product size is small, with a phase spacing of 150mm
The structure is simple and compact, and the weight is light
Flexible operation and easy installation
The closing speed and opening speed are independent of manual operation
Equipped with manual and electric operation modes
External intelligent controller, remote operation, support Modbus RS485 communication.
Product Applications
The grounding cabinet of the power equipment is used to protect the safety of personnel performing line maintenance.
Product Outline Drawing
Note: The earthing switch provides two directional output shafts; the main shaft extends to the left for left operation and extends from the right for right operation.
Secondary Wiring Diagram
1. Under normal circumstances, the grounding switch provides 2 sets of contacts in each of the closing and opening positions;
2. The electric grounding switch is subject to the following figure.
Note: The earthing switch controller usually uses the same intelligent controller as the center-mounted trolley circuit breaker, and the five-protection operation interlock is realized through the controller with the circuit breaker's electric chassis, switch status and other signals.
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