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  • JYNA-31.5 Indoor AC Metal-enclosed Switchgear
Special Switchgear For Rail Traction

JYNA-31.5 Indoor AC Metal-enclosed Switchgear

JYNA-31.5 indoor AC metal-enclosed switchgear is a special equipment for electrified railway powe...

  • Product Introduction
  • Product Features
  • Technical Parameters

Product Introduction

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.


Product Features

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.


Technical Parameters

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