1、 General Provisions

1. FSVR line automatic voltage regulator is a device that tracks changes in line voltage and automatically adjusts the device's body ratio to ensure stable output voltage. It can automatically adjust the input voltage within the range of -20% -+10%, and is particularly suitable for lines with large voltage fluctuations or voltage drops. This type of feeder voltage regulator is installed in series at the middle and rear of 6kV, 10kV, and 35kV lines to adjust the line voltage within a certain range, ensuring the user's supply voltage and reducing line losses. In addition, the FSVR feeder automatic voltage regulator is also suitable for substations where the main transformer does not have voltage regulation capability. This type of voltage regulator is installed on the outgoing side of the substation transformer to ensure the bus voltage on the outgoing side. It has a wide range of applications in rural and urban power grids, oil fields, coal, chemical industries, substations, and other fields across the country.

2、 Main features

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

(2) Automatically adjust the gear 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 frequency limit can be adjusted as needed, and the parameter settings are flexible and convenient;

(4) Display the number of gear actions and current gear of the FSVR on load tap changer, with indications for the highest and lowest gears;

(5) Equipped with gear upper and lower limit protection, action time limit function, effectively improving the reliability of the product;

(6) The controller has overvoltage and undervoltage protection functions. When the line is in an overvoltage or undervoltage state, the controller automatically locks; Ensure safe operation of on load tap changers

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

(8) Equipped with RS485 communication interface, the controller parameters can be viewed and modified within 30 meters from the installation point through wireless communication module.

(9) Cloud remote control can also be added.

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 changer

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

DL/T572-2010 Operating Regulations for Power Transformers

2. Basic standards for use

The installation point voltage of the FFSVR line automatic voltage regulator meets the requirements of the national standard GB/T12325-2008 for power supply voltage deviation: the sum of the absolute values 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 three-phase power supply voltage of 20kV and below is ± 7% of the rated voltage; The allowable deviation of 220V single-phase power supply voltage is+7% and -10% of the rated voltage.

4、 Main technical parameters

1. Environmental conditions

1.1 Altitude: ≤ 2000m

1.2 Environmental temperature: -25 ℃ to+45 ℃

1.3 Relative humidity: less than 90%

1.4 Anti pollution Capability: Level III

Installation inclination:<2%

1.6 There is no pollution or corrosive medium around the device that seriously affects the insulation performance of the device. The workplace has no fire or explosion hazards, and there is no severe vibration.

Attention: When the working environment exceeds the above conditions, users need to provide special instructions when placing orders.

2. Technical parameters

2.1 Rated capacity: 630 KVA、800KVA、1000KVA、1250KVA、1600KVA、2000KVA、3150KVA、4000KVA、5000KVA 6300kVA 、8000KVA  10000kVA  Wait, special specifications can be customized.  

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

2.3 Frequency: 50 Hz

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

2.5 gears: 7-9 gears

2.6 Connection group: Ya0

2.7 Transformer oil grades: 25 #, 45#

2.8 Cooling method: ONAN

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

2.10 The FFSVR line automatic voltage regulator adopts a fully sealed corrugated oil tank with oil temperature indication and pressure relief valve; The box is equipped with a built-in signal power supply and sampling PT, providing sampling signals and working power for the controller;

3. Basic parameters of voltage regulating switch:

3.1 Resistance of each contact of the switch: related to the number of stages of the on load tap changer,<500 μ Ω

3.2 Switching electric operation replacement time: 10 seconds

3.3 Switching time of transition resistor: 15-24ms

3.4 Electrical lifespan of switch contacts at rated capacity:>50000 cycles

3.5 Mechanical lifespan of switch:>500000 cycles

3.6 Switching transition mode: single resistor or dual resistor

4. Performance parameters of 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-channel voltage (0-250V)

4.5 Switching input: 10 channels of idle contact input

4.6 Switching output: 2 channels (AC250V/380V l6A)

4.7 Measurement accuracy: Voltage (0.5%)

4.8 Anti interference level: meets the requirements of IEC61000-4:1995 level