KYN28A-12/24 AC Metal-Armored Removable Switchgear

Product Introduction

KYN28A-12/24 AC Metal-armored removable switchgear is used for single busbar or single busbar with nominal system voltage 3~10kV and rated frequency 50Hz Segmented systems are mainly used for power transmission in power plants, small and medium-sized generators, power distribution in industrial and mining enterprises and secondary substations of electrical systems, and for starting power of large high-voltage motors.

Technical Parameters

Item		Unit	25`50kA
Rated voltage		kV	3.6,7.2,12
Rated insulation level	1min rated short-time power frequency withstand voltage	kV	42
Rated insulation level	rated Lightning impulse withstand voltage (peak)	kV	75
Rated frequency		Hz	50
Rated current of main bus		A	630, 1250, 1600, 2000, 2500, 3150, 4000, 5000
Branch bus rated current		A	630, 1250, 1600, 2000, 2500, 3150, 4000, 5000
Rated short-time withstand current (4s)		kA	25, 31.5, 40.5, 50
Rated peak withstand current		kA	63, 80, 125, 135
Protection level			Shell IP4X (circuit breaker IP2X when the door is open)

Product size

Height dimension		mm	2200
Width dimension	Branch bus Rated current ≤1250A	mm	650, 800
	1250A＜Branch bus rated current=2000A	mm	800, 1000
	Branch bus rated current>2000A	mm	1000
Frame depth dimension		mm	1450

Features

Safety - complete test verification; reliable "five-proof" interlocking system; complete mechanical interlocking system; metal armored closed design; cabinet protection grade IP4X; independent high positive compartment and low-voltage instrument compartment; the product can Installation against the wall and maintenance in front of the cabinet reduce the floor space.

Reliable - scientific double-bending and riveting technology of aluminum-zinc-coated panels; advanced production, processing and testing equipment; strict quality management system

Optimization - Equipped with VS1 vacuum circuit breaker, it can also be equipped with vacuum circuit breakers of joint venture brands such as VD4, VB2. 3AE, HVX and other joint venture brands; the cabinet structure is assembled and the circuit breaker adopts a handcart center-mounted structure; the product can be installed against the wall , Maintenance in front of the cabinet to reduce the floor space.

Innovation - a full range of circuit breaker chassis trucks/propulsion mechanisms and grounding switches realize electric operation; the structure is highly versatile and has the functions of cable in (out) lines, overhead in (out) lines and left and right communication. Various solutions can be formed according to needs ; Intelligent components can be configured to achieve "self-perception, independent monitoring, and automatic early warning."

Product usage environment

Ambient temperature: The ambient air temperature does not exceed 40℃, and the average value measured within 24 hours does not exceed 35℃; the minimum ambient air temperature is -15℃

Environmental humidity : the average value of the relative humidity measured within 24 hours does not exceed 95%

The water vapor pressure measured within 24 hours The average monthly relative humidity does not exceed 2.2kPa

The average monthly relative humidity does not exceed 90%

The average monthly water vapor pressure does not exceed 1.8kPa

Altitude : Not exceeding 1000 meters

Seismic intensity: Not exceeding level 8

Installation location: The surrounding air is not significantly affected by dust, Pollution from smoke, corrosive and/or flammable gases, steam or salt spray

Severity under condensation and dirty operation: According to the Level 1 regulations in GB3906

Note: 1. When the relative humidity is greater than 70%, the heater should be turned on to prevent condensation

2. The manufacturer can provide products for use in areas with an altitude of 3000m and below according to user needs

3. When the usage environment conditions are different from the above, it should be replaced by The user negotiates with the manufacturer