6700 kVA Vacuum Pressure Impregnation Vpi Dry Type Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier
• Phase: Three
• Model NO.: SGB-6.7MVA-25/4.16KV
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EE
• Brand: Vouchinvan
• Type: Resin Cast Dry Type Transformer
• Standard: IEC60076
• Cooling Type: an/Af
• Winding Material: Aluminum
• Vector Group: Dyn11
• Impedance: 4%
• Tap Changer: Nltc
• Tapping Range: ±2*2.5%
• Accessories: Temperature Controller, Cooling Fans
• Transport Package: Wooden Case
• Specification: 6700kva
• Trademark: Vouchivan
• Origin: Xuzhou, China
• HS Code: 85042100

Product Description

Product Description

 

The 6.7 MVA dry type transformer was delivered to Vancouver, Canada in 2016, the rated power of the transformer is 6700 KVA. It is a vacuum pressure impregnated winding dry type transformer 25kv to 4.16kv, the high voltage of this dry type transformer is 25kv, the low voltage is 4.16kv. The insulation materials on wires are with H class insulation, which service life is longer than ordinary dry type transformer. Our 6.7 MVA dry type transformer was designed with advanced technology and adopts high quality material and components which result in reliable quality and long operation time.

 

What is VPI process?

Vacuum Pressure Impregnation (V.P.I) is a process by which a fully wound electric apparatus stator or rotor is completely submerged in a Resin. Through a combination of dry and wet vacuum and pressure cycles, the resin is assimilated throughout the insulation system.

 

We ensure that each one of our delivered units has undergone rigorous full acceptance testing. We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!

What is the difference between dry type transformer and oil?

Dry-type transformers use air as the cooling medium, while oil-filled transformers use oil instead of air. Some public places do not use oil-filled transformers because they are a big fire hazard and, instead, use dry-type transformers. This is because the liquid being used is flammable.

Temperature control system

Built-in PT100 probes in 3 phase windings to detect the real-time temperature of windings and cycle display them in the digital screen.

Open circuit alarm and fault self-check alarm display and signal output.

3 stages automatically actions while the temperature reached to the set value, 1st stage the cooling fans start automatically, 2nd stage high temperature alarm,3rd stage over temperature trip.

Fans manual/auto control switch, timing start/stop, history data output.

4-20mA current output

RS485 Modbus communication protocol

Environment temperature measurement

Core temperature measurement

 

Dry Type Transformer Advantages:

1. No Fire Hazard

2. Safety for people and property

3. Outage customer costs

4. Ecological and Environmentally Friendly

5. Maintenance & Pollution Free

6. Suited for damp and/or contaminated

7. Excellent resistance to short circuit effect

8. Excellent capacity to support overload

9. Excellent performance toward seismic phenome

10. Saving Costs give lower installation related costs

11. Easy Installation

 
Scope of Supply
 

Product: resin cast dry type transformer

Voltage level: up to 35KV

Rating level: up to 20MVA

The transformer can be designed according to customer's requirements

 
Technical Specification

SGB 10
Rated capacity (KVA)	Voltage Combination andTap range			Vector group Symbol	No-load loss                        (W)	Load loss (W)	Impedance Voltage(%)	No-load current(%)
	HV(KV)	HVTap range(%)	LV(KV)
30	6     6.3     10    10.5   11	±5%     or ±2*2.5%	0.4	Dyn11	190	760	4.0	2.0
50					270	1070		2.0
80					370	1480		1.5
100					400	1690		1.5
125					470	1980		1.3
160					540	2280		1.3
200					620	2710		1.1
250					720	2960		1.1
315					880	3730		1.0
400					980	4280		1.0
500					1160	5230		1.0
630					1300	6400	6.0	0.85
800					1520	7460		0.85
1000					1770	8760		0.85
1250					2090	10300		0.85
1600					2450	12500		0.85
2000					3050	15500		0.70
2500					3600	18400		0.70

   

SGB 11
Rated capacity (KVA)	Voltage Combination andTap range			Vector group Symbol	No-load loss                        (W)	Load loss (W)	Impedance Voltage(%)	No-load current(%)
	HV(KV)	HVTap range(%)	LV(KV)
30	6     6.3     10    10.5   11	±5%     or ±2*2.5%	0.4	Dyn11	170	760	4.0	2.0
50					240	1070		2.0
80					330	1480		1.5
100					360	1690		1.5
125					420	1980		1.3
160					480	2280		1.3
200					550	2710		1.1
250					640	2960		1.1
315					790	3730		1.0
400					880	4280		1.0
500					1040	5230		1.0
630					1170	6400	6.0	0.85
800					1360	7460		0.85
1000					1590	8760		0.85
1250					1880	10300		0.85
1600					2200	12500		0.85
2000					2740	15500		0.70
2500					3240	18400		0.70

SCB 14
Rated capacity (KVA)	Voltage Combination andTap range			Vector group Symbol	No-load loss                        (W)	Load loss (W)	Impedance Voltage(%)	No-load current(%)
	HV(KV)	HVTap range(%)	LV(KV)
30	6     6.3     10    10.5   11	±5%     or ±2*2.5%	0.4	Yyn0    or  Dyn11	130	640	4.0	2.0
50					185	900		2.0
80					250	1240		1.5
100					270	1415		1.5
125					320	1665		1.3
160					365	1915		1.3
200					420	2275		1.1
250					490	2485		1.1
315					600	3125		1.0
400					665	3590		1.0
500					790	4390		1.0
630					910	5290		0.85
630					885	5365	6.0	0.85
800					1035	6225		0.85
1000					1205	7315		0.85
1250					1420	8720		0.85
1600					1665	10555		0.85
2000					2075	13005		0.70
2500					2450	15445		0.70

SCB 18
Rated capacity (KVA)	Voltage Combination andTap range			Vector group Symbol	No-load loss                        (W)	Load loss (W)	Impedance Voltage(%)	No-load current(%)
	HV(KV)	HVTap range(%)	LV(KV)
30	6     6.3     10    10.5   11	±5%     or ±2*2.5%	0.4	Yyn0    or  Dyn11	105	640	4.0	2.0
50					155	900		2.0
80					210	1240		1.5
100					230	1415		1.5
125					270	1665		1.3
160					310	1915		1.3
200					360	2275		1.1
250					415	2485		1.1
315					510	3125		1.0
400					570	3590		1.0
500					670	4390		1.0
630					775	5290		0.85
630					750	5365	6.0	0.85
800					875	6265		0.85
1000					1020	7315		0.85
1250					1205	8720		0.85
1600					1415	10555		0.85
2000					1760	13005		0.70
2500					2080	15445		0.70

We ensure that each one of our delivered units has undergone rigorous full acceptance testing. We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!

Routine test

-Measurement of winding resistance
-Measurement of voltage ratio and check of phase displacement
-Measurement of short-circuit impedance and loss
-Measurement of no-load loss and current
-Dielectric routine tests
-Tests on on-load tap-changers, where appropriate
-Leak testing with pressure for liquid-immersed transformers(tightness test)
-Tightness tests and pressure tests for tanks for gas-filled transformers
-Check of the ratio and polarity of built-in current transformers
-Check of core and frame insulation for liquid immersed transformers with core or frame insulation


Type test

-Temperature-rise type test
-Dielectric type tests
-Determination of sound level for each method of cooling for which a guaranteed sound level is specified
-Measurement of the power taken by the fan and liquid pump motors
-Measurement of no-load loss and current at 90% and 110% of rated voltage


Special test

-Dielectric special tests
-Winding hot-spot temperature-rise measurement
-Determination of capacitances windings-to-earth, and between windings
-Measurement of dissipation factor(tanδ) of the insulation system capacitances
-Determination of transient voltage transfer characteristics
-Measurement of zero-sequence impedance(s) on three-phase transformers
-Short-circuit withstand test
-Measurement of d.c. insulation resistance each winding to earth and between windings
-Vacuum deflection test on liquid immersed transformers
-Pressure deflection test on liquid immersed transformers
-Vacuum tightness test on site on liquid immersed transformers

 

OUR PAKAGE:

Long time shipment & Seaworthy wooden box

Wooden package optional:
1,choose one unit/ wooden box
2,choose 2unit/ wooden box to save cost

OUR SERVICE:

1,Quick response in before sales period help you got order
2,Excellent service in production time let you know each step we made
3,Reliable quality solve you aftersale headache
4,Long period quality waranty ensure you can buy without hesitate

Vouchivan (VCV) transformer is the top transformer supplier in China.  The factory is located in Jiangsu Province,covering an area of 30,000 square meters.  With more than 20 years of transformer export experience,the professional technical team can meet your requirements for all technical standards;  the professional marketing team will quickly and efficiently promote your transformer project,saving you more time and economic costs.  Various international certifications of transformers to ensure product quality,safety and reliability.  The practical application of VCV Transformer in nearly a hundred countries will make you more confident in VCV Transformer.  VCV Transformer will be your good choice.