Mv Panel

The KYN28-12 MV panel is an armored, withdrawable AC metal-enclosed switchgear developed by Jinneng Electric for 10kV power systems. Manufactured in strict compliance with industry standards, this MV panel is equipped with comprehensive five-prevention interlock functions:

 

• Prevention of incorrect closing and opening of the circuit breaker;
• Prevention of operating the isolating switch under load;
• Prevention of connecting the earthing switch when the circuit is live;
• Prevention of closing the circuit when the earthing wire or earthing switch is connected;
• Prevention of unauthorized access to live compartments.

 

The MV panel effectively ensures operational safety at the source of power management, meets the power distribution requirements of substations, industrial and mining enterprises, and various other applications, while providing stable power transmission and distribution to ensure the safe and efficient operation of the power grid.

 

 

• Premium Cabinet Structure: Made of aluminized zinc steel plates with excellent corrosion resistance, high mechanical strength, no deformation, and extended service life.

 

• High Safety Performance: Equipped with four independent compartments and a dedicated pressure-relief channel for effective arc fault isolation and enhanced operational safety.

 

• Reliable Interlock System: Features dual mechanical and electrical five-prevention interlocks to effectively prevent mal-operation.

 

• Excellent Environmental Adaptability: High insulation performance and IP4X protection level ensure reliable operation under harsh environmental conditions.

 

• User-Friendly Mid-mounted Design: Equipped with an interchangeable withdrawable circuit breaker trolley, ensuring precise three-position positioning and convenient operation and maintenance.

 

• ·Space- and Cost-Saving: Compact structure supports wall-mounted installation and full front maintenance, reducing installation space and maintenance costs.

 

• Modular Construction: Modular design enables fast on-site installation and simplifies routine inspection and maintenance.

 

 

I. Basic Rated Parameters

Parameter Item	Standard Value
Equipment Model	KYN28-12 Indoor Metal-Clad Withdrawable Medium-Voltage Switchgear
Rated Voltage	12kV (adaptable to 3.6kV, 7.2kV, and 12kV systems)
Rated Frequency	50 Hz
Main Busbar Rated Current	630A, 1250A, 1600A, 2000A, 2500A, 3150A

 

II. Short-Circuit Withstand and Breaking Parameters

Parameter Item	Common Specifications
Rated Short-Circuit Breaking Current	20kA, 25kA, 31.5kA, 40kA
Rated Short-Time Withstand Current (4s)	20kA, 25kA, 31.5kA, 40kA
Rated Peak Withstand Current	50kA, 63kA, 80kA, 100kA
Rated Short-Circuit Making Current	Same as the Rated Peak Withstand Current

 

III. Insulation Withstand Voltage Parameters (12kV Class)

Test Type	Phase-to-Phase / Phase-to-Ground	Open Contact Gap
Power Frequency Withstand Voltage (1 min)	42 kV	48 kV
Lightning Impulse Withstand Voltage (Peak Value)	75 kV	85 kV

 

 

IV. Protection and Structural Parameters

Item	Parameter
Enclosure Protection Rating	IP4X
Compartment Protection Rating	IP2X
Standard Cabinet Dimensions (W × D × H)	800/1000/1200 × 1500 × 2300 mm
Cabinet Material	Aluminized zinc steel plate with CNC bolted construction
Compartment Division	Four independent compartments: busbar compartment, circuit breaker compartment, cable compartment, and instrument compartment
Interlock Configuration	Standard five-prevention dual interlock system (mechanical + electrical)
Circuit Breaker Positions	Working position, test position, and isolated position

 

V. Protection and Structural Parameters

Item	Permissible Range
Ambient Temperature	-10°C ~ +40°C
Applicable Altitude	≤ 3000 m (customized design available for ultra-high altitude applications)
Relative Humidity	Daily average ≤ 95%, monthly average ≤ 90%
Seismic Intensity	≤ 8 degrees (reinforced type up to 9 degrees)

 

 

 

 

KYN28-12 MV panel is a 10kV indoor mid-mounted high-voltage switchgear designed for three-phase AC power systems with a rated frequency of 50Hz and a voltage class of 12kV. It is mainly used for power reception, distribution, control, protection, and metering. As one of the most mainstream and widely adopted cabinet types in China's 10kV power distribution systems, it is suitable for a wide range of application scenarios.

 

 

 

① We are always ready to answer your inquiries patiently and provide thoughtful, professional recommendations tailored to your needs.

② Once your order is confirmed, we will closely monitor production progress and keep you updated regularly. You can easily check your order status anytime with our timely follow-up.

③ Should you become our authorized distributor, we will stand by your side with full support, helping you address and resolve all customer issues in a timely manner.

④ We take the time to listen carefully to your needs and concerns, proactively analyze every challenge and work out the most suitable solutions for you.We also offer practical improvement suggestions, aiming to meet your expectations and deliver a thoughtful, premium service experience.

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