KYN61-40.5 Switchgear is equipped with the high-performance ZN85A and VD4 vacuum circuit breakers. The cabinet assembly structure improves the appearance quality and manufacturing accuracy. The busbar uses heat-shrink insulation material or epoxy coating insulation, with an optimized electrode shape and a compact cabinet structure. It also has a perfect “five defense” function (i.e., protection against electric shock, water, dust, etc.).
KYN61-40.5 Switchgear is used in a 40.5kV three-phase AC 50Hz power system for power plants, and the acceptance and distribution of electric energy in substations and distribution rooms of industrial and mining enterprises. It can control, protect, and monitor circuits. In addition to being widely used in general power systems, it can also be used in places with frequent operations. The environmental conditions for use are in accordance with GB 3906, “3.6-40.5kV AC Metal-enclosed Switchgear,” and the normal conditions of use.
| Name | Unit | Data | ||
| Rated Voltage | kV | 40.5 | ||
| Rated Frequency | Hz | 50 | ||
| Rated Current of Circuit Breaker | A | 1250, 1600, 2000, 2500 | ||
| Rated Current of Switchgear | A | 1250, 1600, 2000, 2500 | ||
| Rated Short-time Withstand Current (4s) | kA | 20，25, 31.5 | ||
| Rated Peak Withstand Current (Peak Value) | kA | 50, 63，80 | ||
| Rated Short-circuit Breaking Current | kA | 20, 25, 31.5 | ||
| Rated Short-circuit Closing Current (Peak Value) | kA | 50, 63，80 | ||
| Rated Insulation Level | 1min Power Frequency Withstand Voltage | Between poles, poles to the ground | kV | 95 |
| Between fractures | kV | 110 | ||
| Lightning Impulse Withstand Voltage (Peak) | Between poles, poles to the ground | kV | 185 | |
| Between fractures | kV | 215 | ||
| The protection class housing is 2P4X, and the compartment and circuit breaker room doors are lP2X when opened. | ||||
