Single Phase Step Voltage Regulator VR-8 - China Suppliers and 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
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 temperature: -40°C to +85°C
Power source range: 88-132 VAC
Auxiliary output: 11-14 VDC (6W)
Nominal current: 450mA (Range: 45-540mA)
Frequency range: ±5Hz of nominal (50/60Hz)
Phase angle range: -180 to 180 degree
FARADY Voltlogic-230 Digital Regulator Control is a microprocessor-based step-voltage regulator load tap changer control which design and manufactured by FARADY.
- ◆ Comply to IEC60255-1 and IEEE C37.118.
- ◆ Simple, intuitive, controls for voltage regulators, LTC transformers.
- ◆ Flexible communication options (MODBUS, IEC101/104, DNP3.0) integrate the controls to SCADA/DMS systems for remote control monitoring, volt/VAR optimization and distributed generation.
- ◆ Low cost of ownership delivered with industry leading warranties, a software based design approach and outstanding customer service and technical support.
Quality Assurance
Farady Quality assurance is an integral part of the process. All electrical testing is per IEEE & ANSI standards. Quality of processed parts and subassemblies are the responsibility of the production personnel. Regular quality inspections and spot checking are conducted to make sure that good and consistent quality is achieved and maintained.
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 Potential Test
- ● Induced Potential Test
Type Tests
- ● Temperature Rise Test
- ● Lighting Impulse Level (BIL)
- ● Sound Level test
- ● Short circuit test
Frequently Asked Questions (FAQ)
1. What is the regulation range of the VR-8 step voltage regulator?
The VR-8 regulates distribution line voltages from a 10% raise (boost) to a 10% lower (buck) in 32 individual steps.
2. Which international standards do Farady regulators comply with?
They comply with IEEE Std C57.15, IEC 60076-21 (2018), IEEE C57.12.00, and IEEE C57.12.90 standards.
3. 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) for both 50 Hz and 60 Hz systems.
4. What types of controllers are used in the VR-8 series?
Farady utilizes the SEL-2431 universal controller from Schweitzer Engineering Laboratories and the Farady-designed Voltlogic-230 Digital Regulator Control.
5. Can these regulators be installed on poles?
Yes, smaller kVA sizes are specifically supplied with support lugs for pole mounting, while larger units feature substation bases.
6. What communication protocols do the controllers support?
The Voltlogic-230 supports flexible communication options including MODBUS, IEC101/104, and DNP3.0 for SCADA/DMS integration.