KYN61-40.5 Indoor AC High Voltage Metal Armored Removable Switchgear
KYN61-40.5 indoor AC metal armored withdrawable switchgear is suitable for three-phase AC 50Hz, 40.5kV single busbar segmented power systems. It is mainly used for receiving and distributing electrical energy in power plants, substations, industrial and mining enterprises, and high-rise buildings. It also controls, protects, and monitors the circuit, meets the requirements of IEC60298, GB3906, DL404 and other standards, and has complete "five prevention" functions.
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Main technical parameters
| Rated voltage | 40.5kV | |
| Rated frequency | 50Hz | |
| Rated | 1min Power frequency withstand voltage (effective value) | Phase to phase, relative to ground 95kV isolation fracture 118kV |
| Insulation | Lightning impulse withstand voltage (peak value) | Phase to phase, relative to ground 185kV isolation fracture 215kV |
| Level | 1 minute power frequency withstand voltage of auxiliary control circuit | 2000v |
| Rated current | 630A，1250A，1600A，2000A，2500A | |
| Rated short-circuit breaking current* | 25kA，31.5kA | |
| Rated short-circuit closing current (peak) | 63kA，80kA | |
| Rated short-time withstand current (4S)* | 25kA，31.5kA | |
| Rated peak withstand current | 63kA，80kA | |
| Rated voltage of auxiliary control circuit | -110V，~110V，-220V，~220V | |
| *Current transformers should be considered separately | ||
