KYN28A-24 indoor AC metal armoured pull-out switch cabinet
Ⅰ.Overview
KYN28A-24 indoor AC metal armoured pull-out switch cabinet is suitable for three-phase AC 50/60Hz power system, for receiving and distributing power, and for controlling, protecting and testing the circuit. APG epoxy casting and reliable solid insulated bus technology are used in the interior of the product for full insulation design. It has good electric field distribution measures. It is a miniaturized switchgear with advanced technology, stable performance, reasonable structure, convenient use, safety and reliability.
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.
Ⅱ.Environmental conditions
1.Ambient air temperature: Maximum air temperature: +40ºC Minimum air temperature:-15ºC (Under a special process, up to-45 ºC)
2.Altitude: 2500m(Under a special process, up to 4000m)
3.Humidity: Daily average value of relative humidity: <95%
4.Monthly average value of relative humidity: <90%
5.Earthquake grade less than Degree 8
6.The ambient air is not significantly polluted by dust, smoke, corrosive and/or flammable gases, vapors or salt
7.No serious contamination and severe vibration recurrent, severe degree designed to meet the harsh conditions of Class 1 requirements.
Notes: If the operating conditions exceed the normal conditions, please contact our technical department
Ⅲ.Specification
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Description
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Unit
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Specifications
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|
Rated voltage
|
kV
|
24
|
|
Rated power frequency withstand voltage(1 min)
|
kV
|
(50)65
|
|
Lightning impact withstand voltage
|
kV
|
95
|
|
Rated lightning impulse withstand voltage(peak)
|
kV
|
125
|
|
Rated frequency
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Hz
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50(60)
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|
Rated current
|
A
|
630 1250 1600 2000 2500 3150 4000A
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|
Rated current of branch bus
|
A
|
630 1250 1600 2000 2500
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|
Rated short time withstand current
|
kA
|
16 20 25 31.5
|
|
Rated peak withstand current
|
kA
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40 50 63 80
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|
Rated short-circuit continuous time
|
s
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3 / 4
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Degree of protection
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|
Shell: IP4X, IP2X when CPT and CB door are open
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|
Weight
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kg
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800,1000(rated current N1600A)
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|
Overall Dimensions (width x depth x height)
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mm
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800x1800 (2200) x2400; 1000x1800 (2200) x2400
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Ⅳ.Features
Bus bar adopts thermal shrinkable insulating material or epoxy coated insulation method to optimize the shape of the electrode, make the cabinet structure compact and reduce the occupied area.
2. The cabinet body is made of high-quality cold-bonded steel plate and imported aluminium-zinc coated sheet metal, which are processed by NC sheet metal and connected by high-strength bolts, nuts and rivet nuts.
3. The switchgear equipment has other primary schemes such as cable in-out line, overhead in-out line, bus connection, isolation, voltage transformer, lightning arrester and so on.
4. Insulation boards are installed in bus cabinet, handcart cabinet and cable cabinet, which greatly improves the insulation level.
5. The interlock between main switch, handcart, ground knife switch and cabinet door adopts mandatory mechanical door lock mode to meet the "five-proof" function.
6. Friendly man-machine interface makes switchgear operation programmable and formulaic, and the operator can see it at a glance.
7. The main wiring scheme can reach more than 160 kinds, and has strong structural adaptability, which can meet the needs of different users.
