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Type KYN28-12 Armored Open AC Metal Enclosed Switchgear

Type KYN28-12 Armored Open AC Metal Enclosed Switchgear

Product Overview

KYN28A-12 (Z) (GZS1) type armored move-open type AC metal-enclosed switchgear (hereinafter referred to as “switchgear”) It is suitable for three-phase AC 50HZ power system, used for receiving and distributing electrical energy and circuit control, protection and monitoring.

This product conforms to the standards: GB3906 “3-35kV AC metal-enclosed switchgear”, GB/T11022 “Standard Common Technical Requirements for High Voltage Switchgear and Control Equipment”, IEC60298 “Rated Voltage 1kV and Above AC Metal-enclosed Switchgear and Control Equipment”.

KYN28-12 armored open AC metal enclosed switchgear

Model Meaning

  • K— Vacuum interrupter
  • Y— Push-to-open (move-open type)
  • N— Within the home (indoor)
  • 28A— Design number
  • 12— Rated voltage
  • (Z)— Metal armor

Conditions of Use

  • Surrounding air temperature: maximum temperature +40℃, minimum temperature -15℃.
  • Relative humidity: average daily relative humidity ≤95%; average daily water vapor pressure not exceeding 2.2kPa; average monthly relative temperature ≤90%; average monthly water vapor pressure not exceeding 1.8kPa.
  • Altitude: below 1000m.
  • Seismic intensity: no more than 8 degrees.
  • The surrounding air should be free from obvious pollution such as corrosive or combustible gases and water vapor.
  • No violent vibration.
  • Beyond the GB3906 provisions of the normal conditions of use, by the user and the company to negotiate.

Overall Dimension

Sports Event Unit (Of Measure) Technical Parameters
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 Short-Time Withstand Current (4S) KA 20 / 25 / 31.5 / 40
Rated Peak Withstand Current (Peak) KA 50 / 63 / 80 / 100
Rated Short-Circuit Breaking Current KA 20 / 25 / 31.5 / 40
Rated Short-Circuit Shutdown Current (Peak) KA 50 / 63 / 80 / 100
Rated Insulation Level 1min Frequency Withstand Voltage Inter-Polar, Inter-Polar-To-Earth KV 24 / 32 / 42
Rated Insulation Level 1min Frequency Withstand Voltage Intermittent KV 46 / 70 / 85
Lightning Surge Withstand Voltage (Peak) Inter-Polar, Inter-Polar-To-Earth KV —
Lightning Surge Withstand Voltage (Peak) Intermittent KV —
Protection Class IP4X for the enclosure, IP2X for the isolation compartment and the breaker compartment when the door is open.

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