Description
The KYN28A-7.2(FC) withdrawable AC metal-enclosed switchgear is used in the power plant as well as industrial and mining enterprises for controlling and protecting high voltage motors. It can limit short-circuit current and save investment in cables.
| Item | Data | |
| Main busbar | Rated voltage (KV) | 7.2 |
| Rated current (A) | 630-3150 | |
| 4s rated thermal current (KA) | 20, 25, 31.5, 40, 50 | |
| Rated dynamic current (peak) (KA) | 100-130 | |
| F-C circuit (Functional unit) | Rated voltage (KV) | 7.2 |
| Expected short-circuit breaking current (KA) | 50 | |
| Expected closing current (peak) (KA) | 130 | |
| Lightning impulse withstand voltage (phase to phase, phase to ground, contactor fracture) (KV) | 60 | |
| 1min power frequency withstand voltage (phase to phase, phase to ground, contactor fracture) (KV) | 32 | |
| Rated current (A) | 315 | |
| 4s rated thermal current (KA) | 4 | |
| Let-through current (peak) (KA) | 315A Cut-off current of limiting fuse: 45kA | |
| Maximum over current (KA) | 3.52 | |
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