36kV 40.5kV air-insulated metal-clad withdrawable MV Switchgear

Description

KYN61-40.5( same as unigear Z3.2) air-insulated metal-clad withdrawable switchgear( hereinafter as "swit chgear") is a kind of MV switchgear.

It is designed as withdrawable module type panel, and the withdrawable part is fitted with VD4-36E, VD4-40.5 withdrawable vacuum circuit breaker manufactured by Cooper Nature company. It can also be fitted with isolation truck, PT truck, fuses truck and so on. It is applicable to three phase AC 50/60 Hz power system,

and mainly used for the transmission and distribution of electrical power and control, protection, monitoring of the circuit.

Standards and specifications

• IEC60694 The commo n technical requirements of high voltage switchgear and controlgear.

• IEC62271-200 A.C. metal enclosed switchgear and controlgear at the rated voltage of 1kV~52k V.

• IEC62271-100 High voltage switchgear and controlgear-Part 100:Hi gh voltage A.C. circuit breaker.

• GB3906 3.6~ 40.5kV alternating current metal enclosed switchgea r and controlgear.

• GB1984 High voltage alternating current circuit breaker.

• GB/T11022 The commo n technical requirements of high voltage switchgear and controlgear.

• DL/T404 3.6~ 40.5kV alternating current metal enclosed switchgear and controlgear.

Service conditions:

•  Ambient temperature: Maximum temperature:+40℃     Minimum temperature: -15℃.

•  Ambient humidity: Daily average RH no more than 95%;Monthly average RH no more than 90%.

•  Altitude no higher than 2500m.

• The air around without any pollution of duty,smoke,ercode or flammable air,steam or salty fog.

Technical parameters:

What are the structural characteristics of air-insulated metal armored withdrawable medium voltage switchgear?

Metal Clad:

• The cabinet is made from high-quality cold-rolled steel plates, which are processed and bent using CNC equipment. It is assembled into a robust metal-clad structure using bolts, nuts, and other fasteners. This design provides high mechanical strength and protective capabilities, effectively preventing external objects from colliding with and damaging the internal electrical components.

Draw-Out Design:

• Major electrical components, such as circuit breakers, contactors, and relays, are mounted on drawable trolleys. The trolleys and the cabinet are precisely aligned using guide rails and positioning devices, facilitating easy maintenance and repair. The trolleys can be withdrawn without interrupting power, allowing for the replacement or repair of faulty components. This significantly enhances the reliability and continuity of power supply.

Air Insulation:

• Air is used as the insulating medium, with appropriate air gaps maintained between phases and between the phases and ground to meet insulation requirements. This design is simple and cost-effective, and it does not suffer from issues such as insulation aging or environmental pollution. However, the insulating properties of air are more susceptible to environmental factors. In harsh environments, such as high altitudes, humid conditions, or areas with heavy pollution, the insulation distance may need to be increased to ensure adequate performance.