JYNA-31.5 indoor AC metal-enclosed switchgear is a special equipment for electrified railway power supply system, which combines the advanced technology experience from both home and abroad, and is developed according to our company’s own advantages. JYNA-31.5 switchgear is applicable to 27.5kV single-phase AC 50Hz power supply system of traction substations, sub-switching posts and switching stations for opening and closing load, breaking fault current, and controlling and protecting circuit.

The product is suitable for electrified railway power supply system and complies with GB/T 28428-2012 “Electrified Railway 27.5kV and 2 × 27.5kV AC Metal-enclosed Switchgear" and GB/T 11022-2011 “Common Technical Specifications for HV Switchgear and Control Equipment” and other standards.

1. The body structure is spliced with AI-Zn-plated steel sheet, which underwent repeated bending. Thus it has high mechanical strength;

2. The cabinet is compact in structure, small in size and occupied area, and convenient for transportation and installation;

3. The breaker compartment and the busbar compartment have independent pressure relief channel;

4. The protection degree is IP4X, and reaches IP2X after opening the door;

5. There are many cabinet schemes, which can constitute the power supply system according to the primary system.

No.	Item		Unit	Parameter
1	Rated Voltage		kV	31.5
2	Rated Frequency		Hz	50
3	Rated Current		A	800、1000、12501600、2000、2500
4	Rated Short-time Power Frequency Withstand Voltage (1min)	Pole to Earth	kV	95
		Isolating Distance		110
5	Rated Lightning Impulse Withstand Voltage (peak)	Pole to Earth	kV	200
		Isolating Distance		220
6	Rated Short-circuit Breaking Current		kA	31.5
7	Rated Short-circuit Making Current		kA	80
8	Rated Short-time Withstand Current (virtual value)		kA	31.5
9	Rated Peak Withstand Current		kA	80
10	Rated Duration of Short-circuit		s	4
11	Overall Dimension (W×D×H)		mm	900×2200×26001200×2200×26001400×2200×26001600×2200×2600
12	Protection Degree		/	IP4X