Description:

China KYN28 indoor metal-clad with drawable switchgear(hereafter short as swithgear) is a complete power distribution device for 3.6~24KV, 3 phase AC 50Hz, single bus sectionalized system. It is mainly used for power transmission of middle/small generators in power plants, power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor,etc, so as to control, protect and monitor the system. The switchgear meets IEC298, GB3906-91. In addition to be used with domestic VS1 vacuum circuit breaker, it can be used with VD4 from ABB, 3AH5 from Siemens domestic ZN65A, and VB2 from GE, etc. It is truly a power distribution deviece with good performance.

In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.

Service environment:

•  Ambient temperature: Maximum temperature:+40℃     Minimum temperature: -15℃.

•  Ambient humidity: Daily average RH no more than 95%;Monthly average RH no more than 90%.

• Altitude no higher than 2500m.

•  The air around without any pollution of duty,smoke,ercode or flammable air,steam or salty fog.

Technical parameters：

What are the technical parameters of indoor metal armored traction medium-voltage switchgear?

Rated Voltage:

• 24kV: This parameter determines the insulation level and other related electrical performance design criteria for the switchgear.

Rated Current:

• Common rated current specifications include 630A, 1250A, 1600A, 2000A, 3150A, etc. The specific value should be determined based on the size of the connected load to ensure that the equipment can safely and stably carry and distribute electrical power.

Rated Short-Circuit Breaking Capacity:

• Typically ranges from 20kA to 31.5kA. This parameter reflects the switchgear's ability to interrupt short-circuit currents. The rated short-circuit breaking capacity must be greater than the maximum possible short-circuit current in the power system to ensure reliable interruption of fault currents during a fault, preventing the accident from escalating and maintaining the safe and stable operation of the power system.

Protection Class:

• Generally, the protection class is IP4X or higher. The protection class indicates the enclosure's ability to protect against the ingress of external objects and water. An IP4X protection class prevents the entry of solid objects larger than 1.0mm in diameter into the switchgear, as well as accidental entry of foreign objects or tools, thus effectively protecting the normal operation of internal electrical components.