Switchgear
Medium-voltage switchgear is an indoor, complete set of switchgear equipment designed for use in 10-35kV power distribution systems.
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- PRODUCTS
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Busbar Protection
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Transformer Protection
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Transmission Line Protection
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Breaker Protection
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Feeder Protection
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Auxiliary Relay
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Merging Unit
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Digital Fault Recorder
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Power Stability Control System
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Power Generation Forecast
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Primary Frequency Controller
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Power Plant Controller
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Box Transformer Terminal Unit
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Centralized Control System
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Prefabricated Container
Product Presentation
Medium-voltage switchgear is widely applied in various scenarios, including power plants, substations, power transmission for small and medium-sized generators, and power distribution in industrial and mining enterprises.
The product supports the flexible switching and expansion of load circuits, integrating multiple fault protection functions such as overcurrent, short circuit, overvoltage, and undervoltage.Additionally, it integrates real-time operating status monitoring and remote control functionality, accurately addressing the operational requirements of unattended operation scenarios.
Product Feature
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High Interchangeability
The entire product adopts a modular design, enabling the interchangeability of different types of withdrawable units such as circuit breakers, disconnectors, fuses, and voltage transformers for easy maintenance and overhaul.
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Intelligent
Electric operating devices and relay protection devices can be provided as optional accessories, enabling the "four remote-control" functions to meet the automation control requirements of smart grids for such equipment
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Safe and Reliable
It adopts a mechanical interlock to eliminate misoperations; all live parts are enclosed in independent functional compartments, each equipped with a dedicated pressure relief channel. The metal shell is reliably grounded, maximizing personal safety protection.
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Strong Breaking Capacity
Through contact enhancement and temperature rise control, the circuit breaker cabinet can achieve a rated current of 4000A and reliably interrupt any fault current ranging from the load current to the rated short-circuit breaking current.
Technical Specifications
No.
Item
Unit
Parameters
1
Rated voltage
kV
12
24
36
2
Rated frequency
Hz
50
3
Rated current
A
630,1250,2500,3150,4000
4
1 min Power frequency withstand voltage
kV
42/48
65/79
95/118
5
Lightning impulse withstand voltage
kV
75/85
125/145
185/215
6
Rated Short-Time Withstand Current (4s)
kA
20,25,31.5,40
7
Rated Peak Withstand Current
kA
50,63,80,100
8
Rated Short-Circuit Making Current
kA
50,63,80,100
9
Rated Short-Circuit Breaking Current
kA
20,25,31.5,40
10
Mechanical Life
Times
Circuit Breaker 10000; Earthing Switch 3000
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