Contact Box for KYN28-24

1. Rated Voltage: 24kV
2. Installation Method: Vertically installed at the rear of the cabinet, connected and assembled with the primary busbar.
3. Compatible Cabinet: Suitable for KYN28A-24 type cabinets.
4. Product Advantages: Circuit protection, power distribution, high voltage resistance, insulation protection, and environmental adaptability.

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The 24kV contact box is an insulating component molded by epoxy resin APG pressure gel molding process. It is mainly used in trolley-type switchgear and undertakes the functions of electrical connection and insulation isolation.

Product Specifications

Specification Sheet

S.N	Item	Data
1	Rated voltage	24kV
2	Rated current	630/1250/1600/2000/2500/3150A
3	Frequency withstand voltage	42kV/5min
4	Rated lightning impulse withstand voltage	75kV peak value(Contact to ground)
5	Partial discharge	≤5pC(1.1xUn下)
6	Temperature rise test	Long-term operation end temperature rise ≤ 65K (in line with GB/T 11022 standard)
7	Bending strength	≥150MPa(Epoxy resin material)
8	Insulation resistance	≥10⁹Ω(normal),≥10⁸Ω(After being wet)
9	Creepage distance	≥300mm(Standard type),≥400mm(Enhanced)
10	Tensile strength	≥80MPa(Contact connection part)
11	operating temperature	-10℃~+40℃(normal),-25℃~+40℃(Low temperature type)
12	relative humidity	≤95%(No condensation at 20℃)
13	altitude	≤1000m(normal),2000m(Plateau type optional)
14	pollution level	Ⅲ level(Insulation design needs to be strengthened)
15	Protection level	IP4X
16	Standard certification	GB/T 11022(General technical requirements for high-voltage switchgear)
		DL/T 404(Technical conditions for ordering indoor AC high-voltage switchgear)
		IEC 62271-200(General specification for high-voltage switchgear)