Jcz5-7.2kv 250A AC H. V. 3 Phase Mechanical Holding Vacuum Contactor for Substation
General description
JCZ5- 7.2KV series indoor AC high-voltage vacuum contactors are divided into two types: mechanical holding and electromagnetic holding. This contactor is suitable for power systems with three-phase AC 50HZ, rated voltage 7.2KV, and rated current up to 630A. It is used for long-distance connection and disconnection of lines, control of high-voltage motors, transformers and capacitive loads and other electrical equipment. It is especially suitable for various electrical equipment. Fields of frequent operation. The contactor is small in size and light in weight. It adopts the international popular assembly structure of upper and lower arrangement, which is easy to use and maintain, and it is easy to form a complete set of F-C circuit equipment.
Widely used in power grid reactive power compensation, petrochemical, metallurgy, water supply and drainage treatment, coal mine underground equipment and other occasions.
Technical parameters
| Model |
JCZ5-7.2/160 |
JCZ5-7.2/250 |
JCZ5-7.2/400 |
JCZ5-7.2/630 |
| Rated voltage(kv) |
7.2 |
| Rated current(A) |
160 |
250 |
400 |
630 |
| Main circuit joint capability(A/100 times) |
1600 |
2500 |
4000 |
6300 |
| On-off capability of main circuit(A/10times) |
1280 |
2000 |
3200 |
5000 |
| Limit breaking capacity(A/3 times) |
3200 |
4000 |
4500 |
6300 |
| Mechanical life(Ten thousand times) |
200 |
| Mechanical lock life(Ten thousand times) |
10 |
| Main circuit power frequency voltage withstand(kV) |
32 |
| Auxiliary circuit power frequency voltage withstand(kV) |
2.5 |
| Power frequency voltage withstand of control circuit(kV) |
2 |
| Rated operating frequency(times/h) |
300 |
| Frequency of mechanical lock operation(times/h) |
30 |
| Contact opening(mm) |
4±0.5 |
| Overrange(mm) |
1.5±0.3 |
Normal use conditions
a) Upper limit of ambient air temperature: +40°C, lower limit: -25°C
b) The altitude does not exceed 2000M
c) Humidity: The daily average value of relative humidity is not more than 95%, the monthly average value is not more than 90%: the daily average value of water vapor pressure is not more than 2.2KPA, and the monthly average value is not more than 1.8KPA
d) The surrounding air should not be significantly polluted by corrosive or flammable gas and water vapor
e) Infrequent strenuous exercise
f) When the contactor moves, the inclination angle between the installation plane and the horizontal is not more than 5°
g) Requirements beyond the above conditions shall be agreed by the user and the manufacturer.
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