Single Phase Step Voltage Regulator VR-8 | China Suppliers & Factory for 2.5-34.5kV Solutions
Farady Electric VR-8 single phase step voltage regulators are tap-changing autotransformers. They regulate distribution line voltages from 10% raise (boost) to 10% lower (buck) in thirty-two steps of approximately 5/8% each. Voltage ratings are available from 2400 volts (60 kV BIL) to 34,500 volts (200 kV BIL) for 60 Hz and 50 Hz systems. Internal potential winding taps and an external ratio correction transformer are provided on all ratings so that each regulator may be applied to more than one system voltage. Smaller kVA sizes are supplied with support lugs for pole mounting and with substation or platform tie down provisions. Larger sizes are provided with substation bases with pad-mounting provisions.
Product Standards
- IEEE Std C57.15™ Part 21: Standard requirements, terminology, and test code for step-voltage regulators
- IEC 60076-21 2018 version Part 21
- IEEE C57.12.00-2015™ General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
- IEEE C57.12.90-2015 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
- Operating taps comply to IEEE requirements
Main Features
Regulator Controller
Tap changer with motor and power supply
Position indicator with ADD-AMP adjustment
Two laser-etched nameplates
Lifting lugs
Oil drain valve and sampling device
Upper filter press connection
Oil sight gauge
High-creep bushings with NEMA connectors
Pole-type mounting brackets
Substation base (substation units)
External series arrester
Automatic pressure relief device
Control cabinet with removable front panel
Ratio correction transformer
Shunt & Series arresters
Product Design
Regulator Controller Options
SEL-2431 Universal Controller
VR-8 series step voltage regulator use Schweitzer Engineering Laboratories, Inc (SEL) universal controller box model number SEL-2431 following standard IEEE C37.118.
- Built-In Reliability, Ten-Year Warranty
- Plug-In Voltage Regulator Compatibility
- Advanced Tap-Position Tracking
- Easy Application Settings
- Connect and Retrieve Data Quickly
Operating Temp: -40°C to +85°C
Power Source: 88-132 VAC
Aux Output: 11-14 VDC (6W)
Nominal Current: 450mA
Frequency: 50/60Hz (±5Hz)
Phase Angle: -180 to 180°
FARADY Voltlogic-230 Digital Control
Microprocessor-based step-voltage regulator load tap changer control designed and manufactured by FARADY.
- Comply to IEC60255-1 and IEEE C37.118
- Simple, intuitive controls for voltage regulators and LTC transformers
- Flexible communication: MODBUS, IEC101/104, DNP3.0 for SCADA/DMS integration
- Low cost of ownership with industry-leading warranties and technical support
Quality Assurance & Testing
Farady Quality assurance is an integral part of the process. All electrical testing is per IEEE & ANSI standards. Regular quality inspections and spot checking are conducted to ensure consistent quality.
Routine Tests
- In-process Core Loss Test
- Operation Test
- Winding Resistance Test
- Polarity and Phase Displacement Test
- Insulation Power Factor Test
- Oil DBV Test
- No Load Loss & Excitation Test
- Impedance Voltage & Load Loss Test
- Voltage Ratio Test
- Applied & Induced Potential Tests
Type Tests
- Temperature Rise Test
- Lighting Impulse Level (BIL)
- Sound Level test
- Short circuit test
Frequently Asked Questions
What is the regulation range of the VR-8 voltage regulator?
The VR-8 regulates distribution line voltages from a 10% raise (boost) to a 10% lower (buck) in thirty-two discrete steps of approximately 5/8% each.
What voltage ratings are available for these systems?
Voltage ratings range from 2400 volts (60 kV BIL) up to 34,500 volts (200 kV BIL), compatible with both 50 Hz and 60 Hz systems.
Which controllers are compatible with the VR-8 series?
The series supports the SEL-2431 Universal Controller and the FARADY Voltlogic-230 Digital Regulator Control, both offering advanced tracking and communication options.
How can the VR-8 be mounted?
Smaller kVA sizes include support lugs for pole mounting, while larger units are provided with substation bases suitable for pad-mounting or platform installations.
What communication protocols are supported for SCADA integration?
The Voltlogic-230 control offers flexible communication options including MODBUS, IEC101/104, and DNP3.0 for remote monitoring and VAR optimization.
What quality standards do these regulators meet?
All units comply with IEEE Std C57.15, IEC 60076-21, and undergo rigorous routine and type testing, including BIL and short circuit tests.