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40.5kv Metal Clad Switchgear Metal Enclosed Switchgear

Metal clad switchgear engineered for 40.5kV three-phase AC 50Hz systems addresses the most demanding high-voltage reception and distribution challenges in power plants and substations. This withdrawable switchgear equips each cabinet with a composite insulated vacuum circuit breaker on a handcart floor structure, supporting rated currents up to 2500A and short-circuit breaking currents up to 31.5kA. Moreover, its CNC-machined aluminum-zinc steel enclosure achieves four fully separated compartments, giving this metal enclosed switchgear both structural precision and long-term corrosion resistance.
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Rated Current:
Rated Frequency :
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  • KYN61-40.5

  • Giantele

  • 40.5kv

  • 50hz

  • 1250A/1600A/2000A

  • IP4X

  • PVOC/SONCAPISABS/COC/COI/CRCC/GCC

  • IEC 62271

  • Three Phase

  • 1 piece

Overview 

Metal clad switchgear engineered for 40.5kV three-phase AC 50Hz systems addresses the most demanding high-voltage reception and distribution challenges in power plants and substations. This withdrawable switchgear equips each cabinet with a composite insulated vacuum circuit breaker on a handcart floor structure, supporting rated currents up to 2500A and short-circuit breaking currents up to 31.5kA. Moreover, its CNC-machined aluminum-zinc steel enclosure achieves four fully separated compartments, giving this metal enclosed switchgear both structural precision and long-term corrosion resistance.


Operating Conditions

  • Environment temperature: from +40℃ to -10°C, the average temperature in 24h not exceeding 35°C.

  • Absolute elevation: less than1000m.

  • Relative humidity: daily average value less than 95% and monthly average value less than 90%.

  • Earthquake intensity: less than 8 degree.

  • Water vapor pressure: daily average value less than 2.2kPa and monthly average value less than 1.8 kPa.

  • Surrounding enivironment: place where there is no dangers of fire and explosion,no serious dirt, chemical corrosion or violent vibration.


Product Features

  • Four Independent Compartments:This three phase switchgear separates the handcart, busbar, cable, and relay rooms to fully isolate faults and protect operating personnel at all times.

  • Closed-Door Full Operation:This electrical enclosure cabinet allows all switching operations with the cabinet door closed, eliminating direct personnel exposure to energized components.

  • Lead Screw Nut Handcart Drive:The electric switchgear handcart uses a lead screw nut propulsion mechanism, enabling smooth movement and preventing structural damage from incorrect handcart operation.

  • Five-Prevention Mandatory Interlocking:Every power distribution board unit applies mandatory mechanical locking between the main switch, handcart, and cabinet door to meet all five-prevention requirements.

  • Wide Cable Connection Space:The control equipment cable room accommodates current transformers, earthing switches, lightning arresters, and multiple cables within a spacious, well-organized layout.

  • High Insulation Performance:This HV switchgear delivers 95kV power frequency withstand voltage and 185kV lightning impulse withstand voltage, ensuring stable insulation across demanding grid environments.

  • IEC-Compliant Modular Assembly:This high voltage switchgear meets IEC62271-200 and GB3906 standards with a bolt-assembled modular structure that supports multiple handcart types including VCB, PT, and metering configurations.

Technical Data

Item
Unit Data
Rated voltage
kV 3.6、7.2、12
Rated frequency
Hz 50
Circuit breaker rated current
A 630、1250、1600、2000、2500、3150
Rated current of switchgear
A 630、1250、1600、2000、2500、3150
Rated short-time withstand current (4S)
kA 20、25、31.5、40
Rated peak withstand current (peak)
kA 50、63、80、100
Rated short-circuit breaking current
kA 20、25、31.5、40
Rated short circuit closing current (peak)
kA 50、63、80、100
Rated insulation level 1min power frequency withstand voltage Between poles, poles to the ground kV 24、32、42
Between fractures kV 24、32、42
Lightning impulse Withstand voltage (peak) Between poles,poles to the ground kV 40、60、75
Between fractures kV 46、70、85
Class of protection

The enclosure is IP4X, and the compartment and circuit breaker room doors are IP2X when opened.

Note: Customizable products (Rated Voltage:24kV), please consult our company for detailed data


Schematic diagram of structure

.kappframework-lexjKa(1)(1)




PRODUCT SIZE DESCRIPTION

03


Height B(mm) 2300
Width A(mm) 40KA rated current of small branch bus is up to 1250A, thermal stable current 40KA 800
the rated current of small branch bus is over 1600A 100
Depth C(mm) cable incoming and out going 1500
Overhead incoming and out going 1660
Wt.(kg) 700-1200


Product structure

11

A bus compartment
B circuit breaker compartment
C cable compartment

D relay instrument compartment
1.1 pressure-releaf cover
1.2 secondary passage cover
3 bus bushing
4 main bus-bar
5 stationary contact
6 contact's box
7 ст
8 grounding switch
9 cable
10 zinc-oxide surge arrester 
11 grounding bus-bar
12 partition
13 shutter
14 secondary contact block
15 handcart of circuit breaker 
16 heate
17 operating hole of handcart 
18 operating shaft of grounding switch
19 bottom plate

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