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Home/Earthing Switch/Motor Earthing Switch/LYE104 JN15-24/D31.5 24kV Medium Voltage Electric Motorized Earthing Switch 24kV LYE104 JN15-24/D31.5 24kV Medium Voltage Electric Motorized Earthing Switch 24kV
JN15-24/D31.5 type indoor high voltage grounding switch is a grounding switch developed by our company. This product has the features of simple and compact structure, reliable technical performance, etc. It meets the requirements of GB1985-2004 “AC High-voltage Disconnectors and Grounding Switches” and IEC62271-102:2002, and is suitable for indoor 24kV three-phase AC 50(6O)Hz power system. It has the ability of short-circuit shutdown to protect the other electrical equipments in the switchgear from being damaged, and can be used together with all kinds of high-voltage switchgears as grounding protection for high-voltage electrical equipments during maintenance. It can be used with all kinds of high-voltage switchgear as the grounding protection of high-voltage electrical equipment during maintenance.
Electrical ProductsNormal usage environment of earthing switch
1. The altitude does not exceed 1000m;
2. Ambient air temperature: upper limit +40°C; lower limit -25°°C;
3. Relative humidity: the daily average value is not greater than 95%; the monthly average value is not greater than 90%;
4. The earthquake intensity does not exceed 8 degrees;
5. Pollution level: II.
Technical Parameters of JN15-24/D31.5 electric earthing switch
Model and Meaning
Technical Parameter
| Item | Unit | Data | ||
| Rated voltage | kV | 24 | ||
| Rated short-time withstand current | kA | 31.5 | ||
| Rated short-circuit duration | s | 4 | ||
| Rated short-circuit making current | kA | 80 | ||
| Rated peak withstand current | kA | 80 | ||
| Rated insulation level | PF withstand voltage (1 min) | kV | Phase to earth Phase to phase | 42 |
| Lightning impulse withstand voltage | 75 | |||
| Mechanical endurance | Times | 2000 | ||
Outline Dimension Drawing of JN15-24/D31.5 electric earthing switch
Note:
1. Three phase rigid position’s different period not more than 3mm.
2. The position of each phase skew not more than 2mm.
3. Insulation Monitori ,Power Frequency Voltage-Withstand 42kv/min
4. Each measurement of Contact Resistance not more than 60u.
WIRING INSTRUCTIONS OF MOTORIZED EARTHING SWITCH
1. When switch equipment motorized control device terminal No. 3 and No. 4 corresponds to terminal No. i positive and No. 2 cathode, be careful not to reverse the polarity of the power supply to avoid damage to the motor. Through the debugging to observe whether the rotates direction of earthing switch operating shaft gear met the switch’s opening, closing state, otherwise swap the positive and negative
2.If operate motorized earthing switch separately(not loading), switch equipment motorized control device terminal No. 11 and No. 10(0V common terminal) short.
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