General Description:
Hai Bang 7.2kV Vacuum Contactor-Fuse Combination Unit – Type
HCR-7.2J(D)Y/D315-50T is applicable on AC 50-60Hz power systems and
rated voltage 7.2kV, rated current 315A. The rated voltage of the
typeHCR-12J(D)Y/D200-50T is 12kV, and its rated current is 200A.
They can be installed in the switch cabinet to form an F-C circuit
and used in conjunction with a comprehensive protector. The Vacuum
Contactor Unit combines a high-voltage fuse capable of breaking a
wide range of short-circuit fault currents with a vacuum contactor
that can be frequently operated. The Vacuum Contactor-Fuse
Combination unit can be used for frequent starting of motors and
frequent switching of transformers and capacitors. Vacuum
Contactor-Fuse Combination unit is widely used in power systems
such as power plants, chemicals, coal mines, metallurgy, ports and
wharfs. It can be used by power plants and industrial and mining
enterprises to switch on and off AC high-voltage motors,
transformers, induction furnaces and other loads, and has the
function of short-circuit protection. The trolley at the bottom of
the 7.2kV Vacuum Contactor-Fuse Combination unit can be easily
moved out of the control cabinet. The altitude of the environment
where the product is used does not exceed 1000 meters above sea
level.
Technical Data:
Name | Unit | Value |
Main circuit | Rated working voltage (Ue) | kV | 7.2 | 12 |
| Rated working current (Ie)(Depends on the fuse) | A | ≤315 | ≤200 |
| Rated frequency (fr) | Hz | 50~60 |
| Rated expected short-circuit breaking current (effective value) | kA | ≤50 |
| Rated expected short-circuit making current (peak value) | kA | 125 |
| Power frequency withstand voltage | Wiring terminal to earth | kV | 32 | 42 |
Vacuum breaks | kV | 32 | 42 |
| Lightening impulse withstand voltage | kV | 60 | 75 |
Control circuit | Rated voltage (Us) | V | AC 110/220/380 |
| DC 110/220 |
| Rated power (Ps)electric holding | VA | ≤1000/100 (absorbing/holding) |
| Rated power (Ps) mechanical holding | VA | ≤900/600 (Closing/opening) |
Auxiliary circuit | Form | | (6a+6b) |
| Rated value | | AC 380V/5A |
Control circuit, auxiliary circuit to earth power frequency
withstand voltage | kV | 2 |
Rated operating frequency | Long-term | time/h | 300 |
Short-term | time/h | 600 |
Mechanical endurance | 10000 times | 30 |
Electrical endurance | 10000 times | 10(AC-3) |
Mechanical characteristics | Closing time | ms | ≤150 |
| 3-phase asynchronous time | ms | ≤3 | |
| Original opening time | ms | ≤150(electric holding), ≤60(mechanical holding) |
| Closing tripping | ms | ≤4 | |
Remark:
1. Rated control voltage can be made according to customer’s
requirements.
2. For the mechanical holding type, the locking device needs to be
replaced every 100,000 times.
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