England JDW9-1G-SZ outdoor low-voltage fusible disconnecting switch
Category:
Product Description
Summarize
JDW9-1G-SZ type outdoor low-voltage fusing isolation switch is a single-phase AC 50Hz low-voltage switchgear, used in the rated voltage of 1kV distribution line, as a voltage without load to close the power supply. The isolation switch is operated with an insulating hook. Structure and working principle
The isolation switch is a three-phase non-linkage structure, and each phase is composed of a support, a pillar insulator, a knife and a contact. The upper end of the knife is provided with a fixed pull ring for separating and closing the insulated hook rod.
Reference standard
GB 14048.3 "Switches, isolators, isolators and fuse combinations"
Use environment
1, the altitude does not exceed 1000 meters:
2. Ambient air temperature: upper limit +40℃, lower limit -30℃ in general areas:
3, wind pressure does not exceed 700Pa(equivalent to wind speed 34m/s):
4, seismic intensity does not exceed 8 degrees:
5, no frequent violent vibration places;
6, the ordinary installation site should be free of gases, vapors, chemical deposits, salt spray, dust and other explosive corrosive substances that seriously affect the insulation and conductivity of the switch. Anti-pollution type is suitable for heavy pollution areas, but should not cause fire and explosion substances.
Technical parameter
| Model number | Rated voltage (kV) | Rated current (A) | Rated short-time withstand current kA | Impulse withstand voltage | Power frequency withstand voltage | ||
| Relative to (kV) | Interfracture (kv) | Relative to (kV) | Interfracture (kV) | ||||
| JDW9-1G/400-SZ | 1 | 400 | 4.8 | 4 | 5 | 2 | 3 |
| JDW9-1G/630-SZ | 1 | 630 | 7.2 | 4 | 5 | 2 | 3 |
| JDW9-1G/1000-SZ | 1 | 1000 | 9.6 | 4 | 5 | 2 | 3 |
| JDW9-1G/1250-SZ | 1 | 1250 | 9.6 | 4 | 5 | 2 | 3 |
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