Factory Custom Voltage Regulating Stabilizing Transformer Price Oil Immersed Power Supply

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Oil immersed Voltage Regulating Stabilizing Transformer has obtained multiple certifications and its product quality is favored by customers.
If your order quantity is large, we can customize the certificate for you need certificate.

Transformers Cores Matericals,we can customized two kinds of : Amorphous Alloy Cores or Silicon Steel Cores.

Power Transformers Coil Matericals,we also can customized two kinds of : Copper Coil or Aluminum Coil.
and There are more technologies to meet your needs.
I hope recive you massage.

Why i can say this information about custom Power transformer,Distribution transformer,Subtation transformer,Special transformer?
Because our factoy have more than 300 engineering and technical personnel,more than 1200 employees,covering an area of 240000 square meters.
Of course, our prices are reasonable and cheap, guaranteed to fit your purchasing plan.Dont't worry you plan.
We very much welcome all future partners to visit our factory and office.

Believe in the quality of our products.
Our products are mainly supplied to large national enterprises in China: State Grid, China Southern Power Grid, China Railway, various types of hydropower stations, wind power stations, photovoltaic power stations, etc. Customers can be assured of product quality.

We also cooperate with large companies abroad. For example, ENERGOMAX LLC, GREENS LTD, UZTRANSFORMERLLC, Meta Power Solutions,CENTURY ENGINEERING CONTRACTOR LTD.,MALAYSIA PHASE 2 POWER STATION PROJECT,ETC.

I. General Provisions

1. SVR line automatic voltage regulator is a device that ensures the stability of output voltage by tracking line voltage changes and automatically adjusting the device body ratio. It can automatically adjust the input voltage within the range of ±20%. It is particularly suitable for lines with large voltage fluctuations or large voltage drops. This feeder voltage regulator is installed in series in the middle and rear parts of 6kV, 10kV, and 35kV lines to adjust the line voltage within a certain range to ensure the user's power supply voltage and reduce line losses. In addition, the SVR feeder automatic voltage regulator is also suitable for substations where the main transformer does not have the ability to regulate voltage. This voltage regulator is installed on the outgoing side of the substation transformer to ensure the bus voltage on the outgoing side. It is widely used in the fields of rural power grids, urban power grids, oil fields, coal, chemical industry, substations, etc.

2. Main features

(1) The whole device has large capacity, low loss, small size, and is easy to install and maintain;

(2) It automatically adjusts the gear position of the three-phase on-load tap changer by tracking voltage changes, with reliable operation and high voltage adjustment accuracy;

(3) The voltage reference, action delay, allowable range, and number limit can be adjusted as needed, and the parameter setting is flexible and convenient;

(4) It displays the number of SVR on-load tap changer gear actions and the current gear, with the highest and lowest gear indications;

(5) It has gear upper and lower limit protection and action time limit functions, which effectively improves the reliability of the product;

(6) The controller has overvoltage drop and undervoltage protection functions. When the line is in overvoltage or undervoltage state, the controller automatically locks to ensure safe operation of the on-load tap changer

(7) The controller uses industrial-grade control chips with high reliability and strong anti-interference ability, and can adapt to harsh outdoor environments;

(8) It has an RS485 communication interface, and the controller parameters can be viewed and modified through the wireless communication module.

3. Product standards

1. Production design standards

JB8749-1998 General technical requirements for voltage regulators

GB1094-2013 Power transformers

GB/T6451-2008 Technical parameters and requirements for three-phase oil-immersed power transformers

GB/T17468-1998 Guidelines for the selection of power transformers

GB10230-2007 On-load tap changers

GB/T1058-1989 Guidelines for the application of on-load tap changers

DL/T572-2010 Power Transformer Operation Procedures

2. Acceptance Standards

The voltage at the installation point of the FSVR line automatic voltage regulator meets the national standard GB/T12325-2008 power supply voltage deviation standard: the absolute value of the positive and negative deviations of the power supply voltage of 35kV and above shall not exceed 10% of the rated voltage; the allowable deviation of the three-phase power supply voltage of 20kV and below is ±7% of the rated voltage; the allowable deviation of the 220V single-phase power supply voltage is +7%, -10% of the rated voltage.

IV. Main Technical Parameters

1. Environmental Conditions

1.1 Altitude: ≤2000m

1.2 Ambient temperature: -25ºC~+45ºC

1.3 Relative humidity: less than 90%

1.4 Anti-pollution capability: Class III

1.5 Installation inclination: < 2%

1.6 There are no dirty and corrosive media around the device that seriously affect the insulation performance of the device, and there is no fire and explosion hazard in the workplace, and no severe vibration.

Note: When the working environment exceeds the above conditions, the user needs to make special instructions when ordering.

2. Technical parameters

2.1 Rated capacity: 2000KVA, 3150KVA, 4000KVA, 5000KVA 6300kVA, 8000KVA 10000kVA, etc. Special specifications can be customized.

2.2 Rated voltage: 0.4KV, 6kV, 10kV, 35kV

2.3 Frequency: 50 Hz

2.4 Voltage adjustment range: -20%~+20%

2.5 Gear: 7-9 gears

2.6 Connection group: Ya0

2.7 Transformer oil brand: 25#, 45#

2.8 Cooling method: ONAN

2.9 Insulation level: LI60kV/AC25kV(6kV), LI75kV/AC35kV(10kV), LI200kV/AC85kV(35kV)

2.10 The SVR line automatic voltage regulator adopts a fully sealed corrugated oil tank with oil temperature indication and pressure release valve; the box has a built-in single-phase voltage to provide sampling signals and working power for the controller;

3. Three-phase oil-immersed on-load tap changer:

3.1 Resistance of each switch contact: related to the number of on-load tap changer levels, <500μΩ

3.2 Switch electric operation switching time: 10s

3.3 Switch transition resistance switching time: 15~24ms

3.4 Electrical life of switch contacts at rated capacity: >50,000 times

3.5 Mechanical life of switch: >500,000 times

3.6 Switch transition mode: single resistor or dual resistor

4. Voltage regulator controller

4.1 Working power supply: AC/DC 110-450V

4.2 Rated frequency: 50Hz

4.3 Maximum power consumption: 25W

4.4 Analog input: 2 voltages (0,250V)

4.5 Switch input: 10 empty contact inputs

4.6 Switch output: 2 (AC250V/380V l6A)

4.7 Measurement accuracy: Voltage (0.5%)

4.8 Anti-interference level: in accordance with IEC61000-4:1995 level

Oil Immersed Power Transformer Core 

The low voltage winding adopts the whole section of copper foil, which is wound on the special low-voltage foil winding machine with the F-grade insulation. The foil coil solves the outstanding problems such as low voltage, high current coil winding, high short-circuit stress, unbalanced ampere turns, poor heat dissipation effect, windingspiral angle, unstable manual welding quality and so on. At the same tim-e, the winding ends of our company aresealed with resin, cured and formed, moisture-proof and antifouling. The lead copper bar is automatically welded byargon arc welding.
Transformer Test

Factory test (routine test)

1 Winding resistance measurement (GB1094.1)

2 Short-circuit impedance and load loss measurement (GB1094.1)

3 No-load current and no-load loss measurement (GB1094.1)

4 Winding insulation resistance to ground

5 Routine insulation test (GB1094.3)

6 Voltage ratio measurement (GB1094.1)

7 Insulation oil test (GB1094.1)

8 Functional test

VI. Marking, packaging, storage and transportation

1. Marking

Each set of equipment is marked with the following content:

1.1 Product name and model

1.2 Rated voltage (kV)

1.3 Rated current (A)

1.4 Rated frequency (Hz)

1.5 Rated capacity (kVA)

1.6 Factory number

1.7 Year and month of manufacture

1.8 Manufacturer name and trademark

2. Packaging

Packing materials include:

2.1 Product inspection certificate

2.2 Certificate of conformity

2.3 Product instruction manual

2.4 Required technical information for equipment

3. Storage and transportation

3.1 Delivery according to the business contract; enclosed with <<Product Certificate of Conformity>>, <<Product Inspection Report>>, <<Product Instructions>>;

After the goods arrive at the delivery location, the user is responsible for unloading, handling, and proper storage.

VII. Installation

1. The user is responsible for product installation, and the supplier can send after-sales service personnel to the site for guidance.

2. After the equipment is in place, the grounding wire should be used for multi-point grounding. The grounding resistance cannot be greater than 4 ohms, and the depth of the grounding body buried underground should comply with the grounding requirements of the power regulations.
VIII. After-sales service

1. The supplier provides the user with training on the installation and operation and maintenance of this device;

2. The warranty period is one year. During this period, the supplier is responsible for free repair or replacement of equipment damage caused by product quality, and the supplier provides long-term service for the product. 

Our company has a relatively strong production capacity and efficient marketing team.Products include 110KV,220KV large ultra-high voltage transformers and 35KV below various dry transformers,oil-immersed transformers,amorphous alloy transformers,pre-installed substation and various specifications of box transformer,furnace transformer,rectifier transformer,mining transformer and other special transformers.All products of the company have passed the routine,type and special tests of the National Transformer Quality Supervision and inspection Center and wuhan High Voltage Research Institute of the State Electric Power Corporation.The enterprise has passed IS09001:2015 quality management system certification;Jiangsu province enterprise measurement certification;At the same time,10KV,35KV class power transformers,box substation and the adoption of IEC certification.Product sales cover the national market,but also exported to Australia,New Zealand,India,Madagascar,Vietnam and other countries and regions.

Transformer for On-site installation