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KYN28A-12 armored removable metalenclosed switchgear


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KYN28A-12 indoor AC metal-armored center-mounted switchgear.It is suitable for three-phase AC power systems with rated voltage 12KV and rated frequency 50Hz. It is used to receive and distribute electric energy and control, protect and monitor circuits.

Product Description

Model meaning

KYN28A-12

Normal usage environment.

Ambient temperature:-10°C~ +40°C;
Environment humidity:daily average≤95%，monthly average≤90%;
Altitude: ≤1000m;
Earthquake resistance：The earthquake intensity does not exceed 8 degrees;
The surrounding air should not contain corrosive or flammable gases, water vapor and other obvious pollution;
There should be no serious pollution and frequent violent vibrations, and the severity design under severe conditions should meet Class 1 requirements;
Under normal environmental conditions exceeding the requirements of GB3906 The use shall be negotiated between the user and the manufacturer.

Note:

1.When the relative humidity is greater than 70%, the electric heater should be turned on.

2 Where the altitude exceeds 1000m, it shall be handled in accordance with JB/Z102-7 1.

Product Paramenters

Project		Unit	Data
Rated voltage		kV	3.6,7.2,12
Rated frequency		Hz	50
Circuit breaker rated current		A	630,1250,1600,2000,2500,3150
Switchgear rated current		A	630,1250,1600,2000,2500,3150
Rated dynamic stable current(4s)		kA	16,20,25,31.5,40,50
Rated stable current (peak value)		kA	40,50,63,80,100,125
Rated short circuit breaking current		kA	16,20,25,31.5,40.50
Rated short circuit making current (peak value）		kA	40,50,63,80,100,125
Rated insulation level	1min Power frequency withstand voltage	kV	24 32 42
Rated insulation level	Lightning impulse withstand voltage	kV	40 60 75
Protection level			Shell:IP4X; isolation room and circuit breaker room doors are open:IP2X