Domestic advanced: KYN79-12/1250-31.5 (i-AX) switchgear is fully assembled metal-enclosed switchgear, which can meet the requirements of GB3906, DL404, IEC-298 and other standards.
Full assembly of cabinet body: Aluminum alloy profile frame and aluminium-zinc coated sheet components are assembled, with high assembly accuracy, good strength and elegant appearance. Suitable for on-site consolidation. And the cabinet has the advantages of smaller volume and lighter weight than other series of switchgear of the same type.
Aluminum Alloy Profile Frame: It has the advantages of small size, light weight, high positioning accuracy, outstanding anti-corrosion effect and eliminating eddy current heating.
Typical dimensions: cabinet width (650) X cabinet height (2100) X cabinet depth (1400), cabinet width (650) X cabinet height (2365) X cabinet depth (1500).
Pure Air Insulation: The first 650mm wide cabinet has a net air distance of 125 mm between phases and ground, which meets the requirements of DL/T404 standard.
Convenient operation and maintenance: Instrument room height is only 1300mm. The man-machine interface is clear at a glance.
Handcart interchangeability is excellent: the operation unit saves effort. This product guarantees that all handcarts of the same specifications can be interchanged flexibly.
Simple and reliable locking: to achieve the "five defenses" function, to ensure user safety.
Cable room space is abundant: cable room can install multiple single core (multi-core) cables. Cable overlap height is more than 720 mm, zero sequence transformer can also be installed in cable room.
Good protection: When the single cabinet of this type of switchgear is used or combined, the front, back, left and right of the switchgear are closed, and the charged body inside the cabinet is completely isolated. The top and bottom of the cabinet are both closed, and the protective level of the shell is IP4X.
Reliable grounding: The grounding switch has the ability of short-circuit closing, and can be manually tested at the end of the cable under the condition of opening. The grounding resistance of the aluminium alloy frame shell is less than 150_.
Wide adaptability: ZNB-12/1250-31.5 vacuum circuit breaker developed by our factory is selected as the main switch of the equipment. It can also cooperate with ZN63A-12 (VS1) and imported VM1 and VD4 circuit breakers.
Distribution current and voltage sensors can be selected to replace traditional current and voltage transformers.
GWZ-12 on-line contact temperature monitoring device can be installed.
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Items
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unit
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data
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Rated voltage
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kV
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3.6、7.2、12
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Rated insulation level
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1
min power frequency withstand voltage (RMS)
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kV
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42
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Lightning Shock Tolerance Voltage (Peak)
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kV
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75
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Rated Frequency
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Hz
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50
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Nominal Current of Main Bus
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A
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1250、1600、2000、2500、3150
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Rated Current of Branch Bus
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A
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630、800、1000、1250、1600、2000
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4S thermally stable current (RMS)
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kA
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25、31.5
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Rated dynamic stable current (peak value)
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kA
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60、80、100
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Protection Level
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Shell
IP4X, Circuit Breaker Room Door Opened to IP2X
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Typical
shape size
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Cabinet
width (650)x Cabinet height (2100)x Cabinet depth (1300)
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Cabinet
width (650)x Cabinet height (2365)x Cabinet depth (1500)
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