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Production Add: Jinzhou South Road,

Ningxiang Industrial Park, Changsha,

Hunan Province, China

Email:sales@varelen.com 

             info@varelen.com 

Tel:+86 731 84351029

Fax:+86 731 84371029

Mobil: +86 13873121822

Your present location:index >> Products & service >> Flame-proof Transformer >> Mining Flame Proof Converter Mobile Substation
  • Product: Mining Flame Proof Converter Mobile Substation
  • Rated capacity: 1250~4000kVA
  • Frequency: 50/60Hz
  • Primary voltage: 10,6kV
  • Secondary voltage: 0.6,0.69kV

Purpose
The product is suitable for underground environment containing methane mixture gas and coal dust with potential explosion hazard. There are two groups of three-phase power supplies (which have same output voltage and 30°phase difference) at the secondary side, will work as the power supply for the converter 12-pulse rectification. It is suitable for coal mine, nonferrous metal mine, tunnel engineering, etc.


Characteristics
The product is mining flame proof type, and it has excellent flame-proof performance and adequate mechanical strength.
The transformer is designed with free assembling core structure to prevent the product internal loose during transportation.
High endurance on thermal shock, ultra-highly load and anti-short circuit; low loss, low partial discharge, good insulation performance.
No sensitive to temperature and dust. Nonflammable, fire-retardant, no harmful gas, low noise and no pollution.
Easy to operate and maintain. High insulation, can withstand the harmonic over-voltage insulation impact.
High harmonic inhibiting ability, effectively limits 5 or 7 times harmonic current by 12-pulse phase shifting function.
Two groups of three-phase power supplies (which have same output voltage and 30°phase difference) at the secondary side, will work as the power supply for the converter 12-pulse rectification.


Main technical parameters

Rating kVA

Primary voltage
kV

No-load loss
W

Load loss
W

No-load current
%

Secondary voltage
V

Connection symbol

1250

10
or
6

2800

7400

1.0

2*1200
or
2*1905

Yy0d11

1600

3450

8500

1.0

2000

4050

9700

0.7

2500

4700

10800

0.7

Dd0y11

3150

5500

12800

0.7

4000

6300

15000

0.7