Consultation Hotline: 400-101-3651

KYN28-12 Steel-Clad Movable Type AC Metal Insulation-Enclosed Switchgear


This series of switchgear is applicable for 3-phase 50Hz AC electric system, which can receive and distribute electric energy, and protect and monitor circuits.

It is in conformity with these standards: GB3906 “3~35kV AC Metal Insulation-Enclosed Switchgear”, GB/T11022 “Shared Technical Requirements of Standards for High Voltage Switchgear and Control Equipment”, IEC-60298 “AC Metal Insulation-Enclosed Switchgear and Control Equipment at Rated Voltage Above 1kV and 50kV and Below” and DL/T404 “Indoor AC High Voltage Switchgear Technical Permission”.

Product introduction


Working conditions:
1. Ambient temperature: +40℃~-15℃
2. Humidity: average daily humidity≤95%, average daily vapor pressure≤2.2Kpa, average monthly humidity≤90%, average monthly vapor pressure≤1.8Kpa
3. Altitude: ≤3000m
4. Earthquake intensity: ≤8°
5. No corrosive or inflammable gas or vapor
6. No frequent severe vibration



Technical parameters:
Items Units Values
Rated Voltage kV 3.6,7.2,12
Rated Frequency Hz 50
Rated Current of Circuit Breaker A 630, 1250, 1600, 2000, 2500, 3150
Rated Current of Switchgear A 630, 1250, 1600, 2000, 2500, 3150
Rated Short Time Withstand Current (4S) kA 16, 20, 25, 31.5, 40
Rated Peak Withstand Current (Peak) kA 40, 50, 63, 80, 100
Rated Short Circuit Breaking Current kA 16, 20, 25, 31.5, 40
Rated Short Circuit Making Current (Peak) kA 40, 50, 63, 80, 100
Rated Insulation Level 1min Power Frequency Withstand Voltage Phase to Phase, Phase to Ground kV 24, 32, 42
Breaking kV 24, 32, 48
Lightning Impulse Withstand Voltage (Peak) Phase to Phase, Phase to Ground kV 40, 60, 75
Breaking kV 46, 70, 80
IP Code kV Outer Shell: IP4X,
Compartments and Circuit Breaker Chamber Door: IP2X

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