Special Transformer

KBSGZY Dry Type Mining Explosion Isolation Moveable Transformer Substation

Brand: HENGFENGYOU
Series: KBSGZY
USES: Mine Power Distribution
Country of origin: China
Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
Certification: ISO9001、CB、CE、MA

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Global Procurement Guide for Dry Type Mining Explosion Isolation Moveable Transformer Substation

Mining Transformer Overview:

KBSGZY mine explosion-proof substation (hereinafter referred to as mobile substation) is a kind of underground power supply and transformation equipment in coal mine. It is a mobile power distribution device composed of four parts: dry-type transformer for mobile substation, high-voltage load switch (or high-voltage vacuum switch), low-voltage feed switch (or low-voltage protection box) and high-voltage cable connector (depending on the actual structure of high-voltage switch). This product is also applicable to: coal mine, iron ore, aluminum mine, copper mine, gold mine, silver mine, zinc mine, titanium mine, manganese, magnesium and other mines and oil fields, gas fields, oil and gas stations, and other explosive gases for power supply and distribution. All mining transformer products of hengfengyou electric have obtained coal mine product safety mark certificate and quality and safety production license. The safety mark is "Ma" and the quality and safety mark is "QS quality and safety".

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Mining Transformer Structural features:

>KBSGZY mining flameproof mobile substation KBSGZY is mainly composed of three parts: mine flameproof mobile substation special dry transformer, mine flameproof mobile substation special high voltage vacuum switch, mine flameproof mobile substation special low voltage protection box. High and low voltage switch with leakage, overload, short circuit, phase break, loss of voltage, PLC control and other functions.

>KBSGZY flameproof mobile substation dry transformer is composed of box shell, box cover, core assembly, insulation assembly, high voltage lead, low voltage lead and railway track trolley.

>KBSGZY transformer shell for the top open cover flameproof structure, in the box cover is provided with four small hanging mix, used for lifting cover removal, box shell on both sides of the corrugated steel plate, box bottom thick steel plate, transformer high and low voltage side are provided with wiring flange, connecting high and low voltage switch. The box shell is provided with four large lifting lugs for the overall lifting of the transformer; Both ends of the box shell are welded with grounding bolts and grounding marks for connecting the external grounding wire.

>KBSGZ transformer internal high and low voltage interlocking line and temperature control line are respectively connected with high and low voltage switch; Temperature control using PT100 platinum resistance or temperature relay, when the temperature inside the transformer is too high, send out overtemperature signal.

>; Transformer core assembly consists of core, clip, insulation, etc. The core is made of high quality 30Q130 or 30Q120 cold-rolled oriented silicon steel sheet and multi-step fully inclined three-joint laminated structure to reduce no-load loss and no-load current. The cut of the core piece shall be coated with antirust liquid, and the surface of the core column and the yoke shall be coated with high temperature antirust and moisture-proof paint. The clamp is made of channel steel, and the pull screw structure is used for pulling up and down, and measures are taken to prevent the relative displacement of the core and the clamp, so as not to affect the quality of the product. The core insulation is made of grade C insulation material made in China.

> KBSGZY transformer insulation assembly includes the main vertical insulation, high and low voltage coil, coil compression and other structures. The main longitudinal insulation adopts high quality C grade insulation material; The high and low voltage coil is tightly wound, which improves the mechanical strength of the coil. The high and low voltage coils are made of C class insulated Nomex paper wrapped oxygen-free copper wire. The dielectric constant of Nomex paper and air is very close, and the electric field around the coils is uniform and the local release is small. The coil compaction adopts the structure of pressing nail and porcelain pressing block, and measures are taken to prevent loosening.

> The high-voltage leads are led out by cable, and the low-voltage leads are led out by cable or copper busbar. The creepage distance and air gap are greater than the relevant provisions of China GB3836.3-2000. Under normal operating conditions, sparks, arcs and dangerous temperatures will not be generated, and the use of safe and reliable.

> The trolley is fixed at the bottom of the box body with bolts, the wheels can be disassembled, and the trolley gauge is 900/600mm.

Mining Transformer manufacturing, assembly and acceptance standards:

In the design, manufacture and test of KBSGZY products, Hengfengyou Electric adopts GB standard, IEC standard, industry standard of the Ministry of Power and related standards:

GB/T 16927.1-1997 《High voltage test technical part of general test requirements》

GB/T 16927.2-1997 《High voltage test Technology part ii Measurement system》GB/T 5582-1993 《High voltage power equipment insulation pollution grade》

GB 10237-1988 《Insulation level of power transformers and insulation test -- Air gap of outer insulation》

GB 3836.1-2000 《General requirements for explosion-proof electrical equipment for explosive environments》

GB 3836.2-2000 《Explosion-proof electrical equipment for explosive environment flameproof electrical equipment" d”》

GB 3836.3-2000 《Explosion-proof electrical equipment for explosive environment increased safety type" e”》

GB 6450-1986 《Dry type power transformer》

GB 8286-2005 《Mining flameproof Mobile Substation》

Mining Transformer Technical parameters:

KBSGZY Dry Type Mining Explosion Isolation Moveable Transformer Substation
Type	Rated capacity (KVA)	Voltage combination(KV)			Connection group grade	Loss(W)		No-load current (%)	Short-circuit resistance (%)	Weight (kg)	Dimensions LWH (mm)	Gauge (mm)
Type	Rated capacity (KVA)	High voltage (KV)	Tapping range (%)	Low voltage (KV)	Connection group grade	No-load loss	Load loss	No-load current (%)	Short-circuit resistance (%)	Weight (kg)	Dimensions LWH (mm)	Gauge (mm)
KBSGZY-50/6	50	6KV	±5%	0.693/0.4	YyO(d11)	350	550	2.5	4	1950	2990700900	600
KBSGZY-100/6	100					520	920	2.5	4	2050	30407201000	600
KBSGZY-160/6	160					700	1300	2	4	2310	31007601050	600 900
KBSGZY-200/6	200					820	1550	2	4	2550	31507601050
KBSGZY-250/6	250					950	1800	2	4	3050	32907801100
KBSGZY-315/6	315			1.2/0.693		1100	2150	1.8	4	3500	35608751340
KBSGZY-400/6	400					1300	2600	1.8	4	3750	35659001400
KBSGZY-500/6	500					1500	3100	1.5	4	4040	35809501545
KBSGZY-630/6	630					1800	3680	1.5	4	4345	35809501545
KBSGZY-800/6	800			1.2/0.693 3.45	YyO(d11) Yyno	2050	4500	1.0	4	5675	37609901560
KBSGZY-1000/6	1000			1.2/0.693 3.45	YyO(d11) Yyno	2350	5400	1.0	4	6600	400010601615
KBSGZY-1250/6	1250			1.2 3.45	Yyo Yyno	2750	6500	1.0	4	7610	404011751590
KBSGZY-1600/6	1600			1.2 3.45	Yyo Yyno	3350	8000	0.8	4	9400	425011901865
KBSGZY-2000/6	2000			3.45	Yyno Dyn11	3800	9500	0.6	4.5	9900	425011901865
KBSGZY-2500/6	2500					4500	10600	0.6	5	13750	455012001900
KBSGZY-3150/6	3150					5300	12500	0.6	5.5	16750	480012501800
KBSGZY-4000/6	4000					6100	14000	0.6	6	19750	490013001850
KBSGZY-50/10	50	10KV		0.693/0.4	YyO(d11)	390	680	2.5	4	2050	30907201000	600
KBSGZY-100/10	100					560	1050	2.5	4	2400	32408001050	600
KBSGZY-160/10	160					800	1500	2.0	4	2800	33908501300	600 900
KBSGZY-200/10	200					950	1800	2.0	4	2950	33908501300
KBSGZY-250/10	250					1100	2100	2.0	4	3230	34908951400
KBSGZY-315/10	315			1.2/0.693		1300	2500	1.8	4	3600	36208951450
KBSGZY-400/10	400					1500	3000	1.8	4	3860	37109101500
KBSGZY-500/10	500					1750	3500	1.5	4	4135	38809501535
KBSGZY-630/10	630					2000	4100	1.5	4	5480	39909901585
KBSGZY-800/10	800			1.2/0.693 3.45	YyO(d11) Yyno	2300	5100	1.2	4	6270	416010601615
KBSGZY-1000/10	1000			1.2/0.693 3.45	YyO(d11) Yyno	2600	6100	1.2	4.5	6800	425010501680
KBSGZY-1250/10	1250			1.2 3.45	Yyo Yyno	3100	7400	1.0	4.5	7750	433011751790
KBSGZY-1600/10	1600			1.2 3.45	Yyo Yyno	3800	8500	1.0	5	9450	438011001850
KBSGZY-2000/10	2000			3.45	YyO(d11)	4500	9700	0.7	5	11850	459012001900
KBSGZY-2500/10	2500					5200	10800	0.7	5.5	14850	525513601735
KBSGZY-3150/10	3150					6100	12800	0.7	5.5	18850	521013001880
KBSGZY-4000/10	4000					7000	15000	0.7	6	21850	570013501900
KBSGZY-5000/10	5000					8000	18500	0.7	6.5	24800	570014801900
KBSGZY-6300/10	6300					9500	21000	0.7	7	26800	580015601900
KBSGZY-8000/10	8000					11500	25000	0.7	7.5	28700	600016501960

Mining Transformer Case show

Mining Transformer FAQ

1. What is a Mining Transformer?
A mining transformer is a specialized electrical transformer designed to provide reliable power distribution in mining operations. It is built to withstand harsh environments, including dust, moisture, vibrations, and extreme temperatures.

2. Why Are Mining Transformers Different from Standard Transformers?
Mining transformers are engineered with rugged enclosures, enhanced cooling systems, and explosion-proof designs (if required) to operate safely in hazardous mining conditions, unlike standard transformers meant for less demanding environments.

3. What Are the Common Types of Mining Transformers?
Common types include:
Dry-type transformers (air-cooled, no flammable oil)
Oil-immersed transformers (for high-power applications)
Explosion-proof transformers (for hazardous underground mines)

4. What Voltage Ratings Do Mining Transformers Typically Support?
Mining transformers usually handle medium-voltage (MV) ranges, such as 1kV to 36kV, depending on the mining equipment’s power requirements.

5. How Are Mining Transformers Cooled?
They use different cooling methods:
AN (Air Natural): Passive air cooling
AF (Air Forced): Fan-assisted cooling
Oil-immersed cooling with radiators or heat exchangers

6. Are Mining Transformers Explosion-Proof?
Some mining transformers (especially for underground coal mines) are explosion-proof (Ex-proof) to prevent ignition of flammable gases like methane.

7. What Safety Features Do Mining Transformers Have?
Key safety features include:
- Overload and short-circuit protection
- Temperature monitoring sensors
- Corrosion-resistant enclosures
- Grounding systems for fault protection

8. How Often Should Mining Transformers Be Maintained?
Regular maintenance is critical—typically every 6-12 months, including:
- Insulation resistance tests
- Oil testing (for oil-filled transformers)
- Cleaning cooling systems
- Checking electrical connections

9. Can Mining Transformers Be Customized?
Yes, manufacturers often customize transformers based on:
- Input/output voltage requirements
- Environmental conditions (humidity, dust, altitude)
- Mounting (skid, trailer, or stationary installation)