Reliable Quality 250kVA Dry Transformer with No Pollution for Efficient Power Transmission

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier
• Phase: Three
• Model NO.: scb13-250/10
• Cooling Method: Dry-type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: EE
• Brand: Vouchinvan
• Winding Material: Copper/Aluminum
• Core Material: Silicon Steel Sheet
• Capacity: 30kVA-2500kVA
• Connection Type: Dyn11
• Frequecy: 50Hz/60Hz
• Impedance: 4%-6%
• Tapping Range: -/+5% or -/+ 2.5%
• No-Load Loss: 13~2590W
• Load Loss: 640~15400W
• Transport Package: Foam, Wooden Box, Cardboard, etc
• Specification: 250kva
• Trademark: Vouchivan
• Origin: Xuzhou, China
• HS Code: 8504329000

Product Description

Product Description

Resin insulated dry-type transformers are the SC10, SCB10 series and SC11, SCB11 series of filler insulated dry-type transformers developed independently by our company with the introduction of foreign advanced technology. Since the coils are encapsulated by epoxy resin, they are flame-retardant, fire-proof, explosion-proof, maintenance-free and pollution-free. They are small in size and can be directly placed at the load center. At the same time, the scientific and reasonable design and casting process make the product have smaller partial discharge, low noise, strong heat dissipation capacity, and can operate for a long time at 125% rated load under forced air cooling conditions. It is equipped with an intelligent temperature controller with fault alarm, over-temperature alarm, over-temperature tripping and black box functions, and is connected to the computer through the RS485 serial interface for centralized monitoring and control.

 

Model meaning

High voltage winding

 

It is vacuum cast with epoxy resin with filler, with small partial discharge and high electrical strength of the coil. The inner and outer walls of the winding are reinforced with glass fiber grid, which increases the mechanical strength of the coil and improves the product's ability to resist sudden short circuits. The coil will never crack.

Low voltage winding

It adopts a foil structure, which solves the problem of axial helix angle when winding, making the ampere-turns more balanced. At the same time, the coil adopts an axial cooling air duct to enhance the heat dissipation capacity. DMD epoxy resin prepreg cloth is used between the winding layers, and the whole is cured and formed.

Iron Core

 

It is made of imported high-quality cold-rolled silicon steel sheets, with a three-order fully oblique joint structure. The core column is bound with F-grade weftless tape, and the core surface is encapsulated with epoxy resin to reduce no-load loss, no-load current and core noise. The clips and fasteners are specially surface treated to further improve the product appearance quality.

System:Temperature and Cooling

The cross-flow side-blowing cooling fan is adopted, which has the characteristics of low noise, high wind pressure, beautiful appearance, etc., and enhances the overload capacity of the transformer. The temperature control adopts an intelligent temperature controller to improve the reliability of the transformer operation.

Housing and outlet

The protective shell provides further safety protection for the transformer, with protection levels of IP20, IP23, etc. The shell materials include aluminum alloy, cold-rolled steel plate, stainless steel, etc. for users to choose.
The low-voltage outlet uses standard busbar outlet, and both side outlet and top outlet are available. Special outlet methods can also be designed for users.

Implementation standards
GB6450-19861 Dry-type Transformer

Environmental conditions
1. High ambient temperature: +40ºC
2. Low ambient temperature: -25ºC
3. Maximum daily average temperature: +30ºC
4. Maximum annual average temperature: +20ºC
5. Altitude: <1000m
6. Installation location: Install in a place free of fire, explosion hazard and chemical corrosive gas and well ventilated areas.


Technical Specification
 

SCB 13
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	135	640	4.0	2.0
50					195	900		2.0
80					265	1240		1.5
100					290	1410		1.5
125					340	1660		1.3
160					385	1910		1.3
200					445	2270		1.1
250					515	2480		1.1
315					635	3120		1.0
400					705	3590		1.0
500					835	4390		1.0
630					935	5360	6.0	0.85
800					1090	6260		0.85
1000					1270	7310		0.85
1250					1500	8720		0.85
1600					1760	10500		0.85
2000					2190	13000		0.70
2500					2590	15400		0.70

 

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

 

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

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