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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.
| 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
.
PRODUCT SIZE DESCRIPTION

| 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

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
