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SVR Series line automatic voltage regulator is designed to automatically track line voltage changes and regulate output voltage for 6kV, 10kV, and 35kV distribution lines. Installed in series on the middle or rear section of the feeder, or on the outgoing side of a substation transformer, it helps maintain qualified user-side voltage, reduce line loss, and improve power supply quality in rural grids, urban networks, oil fields, mining, chemical plants, and substations.
The input voltage can be automatically adjusted within the specified regulation range to compensate for large voltage fluctuations or large voltage drops on the line. This makes the SVR series suitable for feeder voltage stabilization and for substations where the main transformer does not have voltage regulation capability.
The SVR series automatically adjusts the three-phase on-load tap switch position by tracking line voltage changes. This helps maintain stable output voltage with reliable action and high regulation accuracy.
The voltage reference, action delay, allowable range, and operation limit can be adjusted according to site requirements, making parameter setting flexible and convenient for different feeder conditions.
The controller displays the number of on-load tap-changer operations and the current gear position, with highest and lowest gear position indication for easier monitoring and maintenance.
The regulator is designed with upper and lower limit protection for gear position, action time limit function, over-voltage rapid drop function, and under-voltage protection. When the line enters an over-voltage or under-voltage condition, the controller automatically locks to help ensure safe operation of the on-load tap changer.
The controller adopts an industrial-grade control chip with high reliability and strong anti-interference performance, helping the product adapt to harsh outdoor environments.
The controller is equipped with an RS485 communication interface. Parameters can be viewed and modified within 30m from the installation point through a wireless communication module. Cloud remote control can also be added as an option.
SVR Series line automatic voltage regulators are widely used in medium- and high-voltage distribution systems where feeder voltage needs to be stabilized and user-end voltage quality needs to be improved.
National rural power grids
Urban power grids
Oil fields
Coal mines and mining areas
Chemical industry facilities
Distribution substations
Feeders with large voltage fluctuation or large voltage drop
Substations where the main transformer has no voltage adjustment capability
| Item | Requirement |
|---|---|
| Altitude | ≤2000m |
| Ambient Temperature | -25℃～+45℃ |
| Relative Humidity | < 90% |
| Pollution Resistance | Level III |
| Installation Tilt | < 2% |
| Site Condition | No serious dirty or corrosive medium affecting insulation, no fire or explosion risk, and no severe vibration |
Note: When the working environment exceeds the above conditions, special instructions should be provided when ordering.
| Item | Specification |
|---|---|
| Product Type | Line Automatic Voltage Regulator / Feeder Automatic Voltage Regulator |
| Rated Voltage Class | 6kV, 10kV, 35kV |
| Rated Frequency | 50Hz |
| Voltage Regulation Range | -20% to +20% |
| Tap Positions | 7 to 9 taps |
| Connection Group | Ya0 |
| Transformer Oil Grade | 25# / 45# |
| Cooling Method | ONAN |
| Insulation Level | LI60kV / AC25kV (6kV), LI75kV / AC35kV (10kV), LI200kV / AC85kV (35kV) |
| Tank Structure | Fully sealed corrugated oil tank with oil temperature indication and pressure release valve |
| Built-in Components | Built-in signal power supply and sampling PT for controller working power and sampling signal |
| Standard Capacity Range | 630kVA to 20000kVA, special specifications can be customized |
| Item | Specification |
|---|---|
| Contact Resistance | <500μΩ; (related to the number of on-load tap changers) |
| Electrical Operating Time per Switching Action | 10s |
| Transition Resistance Switching Time | 15 to 24ms |
| Electrical Life under Rated Capacity | > 50,000 times |
| Mechanical Life | > 500,000 times |
| Transition Mode | Single resistance or double resistance |
| Item | Specification |
|---|---|
| Controller Power Supply | AC/DC 110V to 450V |
| Rated Frequency | 50Hz |
| Maximum Power Consumption | 25W |
| Analog Input | 2 voltage inputs (0 to 250V) |
| Switch Input | 10-way dry contact input |
| Switch Output | 2-way (AC250V / 380V, 16A) |
| Measurement Accuracy | Voltage 0.5% |
| Anti-Interference Level | Complies with IEC61000-4:1995 level requirements |
| Communication Interface | RS485 |
| Remote Function | Wireless parameter viewing/modification within 30m; optional cloud remote control |
| Rated Capacity (kVA) | Input Voltage Combination (kV) | Tap Range | Output Voltage (kV) | Connection Group | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Short-Circuit Impedance (%) | Body Weight (kg) | Oil Weight (kg) | Total Weight (kg) | Overall Dimensions (L × W × H, mm) | Installation Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 630 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 400 | 2500 | 1.0 | 2 | 600 | 280 | 1100 | 1200*1000*1210 | 550 / 550 |
| 800 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 500 | 2800 | 0.9 | 2 | 670 | 310 | 1210 | 1250*1000*1250 | 550 / 550 |
| 1000 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 600 | 3500 | 0.9 | 2 | 770 | 330 | 1320 | 1280*1050*1290 | 550 / 550 |
| 1250 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 700 | 4000 | 0.8 | 2 | 880 | 350 | 1500 | 1320*1070*1320 | 660 / 660 |
| 1600 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 800 | 5000 | 0.8 | 2 | 1000 | 400 | 1650 | 1400*1100*1380 | 660 / 660 |
| 2000 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 960 | 6000 | 0.6 | 2 | 1150 | 450 | 1950 | 1460*1160*1410 | 660 / 660 |
| 2500 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 1200 | 7000 | 0.6 | 2 | 1380 | 550 | 2320 | 1520*1250*1470 | 660 / 660 |
| 3150 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 1400 | 10000 | 0.6 | 2 | 1650 | 610 | 2640 | 1630*1250*1500 | 820 / 820 |
| 4000 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 1700 | 12000 | 0.5 | 2 | 1840 | 940 | 3300 | 1870*1350*1530 | 820 / 820 |
| 5000 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 1950 | 14500 | 0.5 | 2 | 2160 | 1100 | 4180 | 1900*1450*1620 | 820 / 820 |
| 6300 | 8.0-10.0 / 8.0-10.5 | 1-7 or 1-9 | 10.0 / 10.5 | Ya0 | 2500 | 16000 | 0.4 | 2 | 2600 | 1550 | 5300 | 1980*1450*1950 | 820 / 820 |
| Rated Capacity (kVA) | Input Voltage Combination (kV) | Tap Range | Output Voltage (kV) | Connection Group | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Short-Circuit Impedance (%) | Body Weight (kg) | Oil Weight (kg) | Total Weight (kg) | Overall Dimensions (L × W × H, mm) | Installation Size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 1250 | 7000 | 0.5 | 3 | 1670 | 870 | 3160 | 820 * 820 * 2300 | 1100 / 1850 |
| 2500 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 1500 | 8500 | 0.5 | 3 | 1850 | 930 | 3370 | 820 * 820 * 2400 | 1100 / 1960 |
| 3150 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 1700 | 10000 | 0.5 | 3 | 2040 | 960 | 3680 | 820 * 820 * 2460 | 1250 / 2000 |
| 4000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 2000 | 12000 | 0.5 | 3 | 2300 | 1000 | 4020 | 1070 * 1070 * 2650 | 1500 / 2050 |
| 5000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 2400 | 15000 | 0.5 | 3 | 2720 | 1060 | 4580 | 1070 * 1070 * 2700 | 1680 / 2100 |
| 6300 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 3000 | 19000 | 0.5 | 3 | 3050 | 1100 | 5150 | 1070 * 1070 * 2750 | 1750 / 2150 |
| 8000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 3200 | 21000 | 0.4 | 3 | 3340 | 1290 | 5580 | 1070 * 1070 * 2820 | 1900 / 2220 |
| 10000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 3800 | 24000 | 0.4 | 3 | 3730 | 1520 | 6750 | 1070 * 1070 * 2910 | 2160 / 2310 |
| 12500 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 4500 | 29000 | 0.35 | 3 | 4170 | 1930 | 8180 | 1070 * 1070 * 3220 | 2250 / 2620 |
| 16000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 5400 | 34000 | 0.35 | 3 | 5150 | 2200 | 9360 | 1475 * 1475 * 3340 | 2300 / 2680 |
| 20000 | 28-35 / 28-36.75 | 1-7 or 1-9 | 35 | Ya0 | 6600 | 38000 | 0.35 | 3 | 5850 | 2420 | 10400 | 1475 * 1475 * 3550 | 2360 / 2750 |
Note: The maximum current tap position shown in the reference technical chart is the -7.5% tap position.
JB8749-1998; General technical requirements for voltage regulators
GB1094-2013; Power Transformer
GB/T6451-2008; Three-phase oil-immersed power transformer technical parameters and requirements
GB/T17468-1998; Guidelines for selection of power transformers
GB10230-2007; On-load tap changer
GB/T1058-1989; Application guidelines for on-load tap-changers
DL/T572-2010; Power transformer operation regulations
The installation point voltage of the FSVR / SVR line automatic voltage regulator shall meet the national standard GB/T12325-2008 power supply voltage deviation standard. For 35kV and above, the absolute value of the positive and negative deviation shall not exceed 10% of the rated voltage. For three-phase power supply of 20kV and below, the allowable deviation is ±7% of rated voltage. For 220V single-phase power supply, the allowable deviation is +7% and -10% of rated voltage.
The SVR series automatically regulates feeder voltage by tracking line voltage changes and adjusting the transformer ratio through an on-load tap changer, helping stabilize user-side voltage and reduce line loss.
It can be installed in series on the middle or rear section of 6kV, 10kV, or 35kV lines, or on the outgoing side of a substation transformer when additional voltage regulation is required.
The current page information supports 6kV, 10kV, and 35kV applications.
The listed regulation range is -20% to +20%.
Yes. The controller is equipped with an RS485 communication interface and supports wireless parameter viewing and modification within 30m. Optional cloud remote control can also be added.
Yes. The controller uses an industrial-grade control chip with strong anti-interference capability, and the equipment is designed for outdoor feeder voltage regulation applications.
Yes. The page states that special specifications can be customized according to project requirements.
It is widely used in rural power grids, urban power grids, oil fields, coal mines, chemical industry projects, and substations where feeder voltage stabilization is required.
