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
✓1. IEEE Std C57.15™ Part 21: Standard requirements, terminology, and test code
✓2. IEC 60076-21 2018 version Part 21
✓3. IEEE C57.12.00-2015™ General Requirements for Liquid-Immersed Transformers
✓4. IEEE C57.12.90-2015 IEEE Standard Test Code for Liquid-Immersed Transformers
✓5. Operating taps comply to IEEE requirements
Main Features
● Regulator Controller
● Tap changer with motor
● Position indicator (ADD-AMP)
● Laser-etched nameplates
● Lifting lugs & Oil drain valve
● Upper filter press connection
● Oil sight gauge
● High-creep bushings (NEMA)
● Pole-type mounting brackets
● Substation base units
● External series arrester
● Automatic pressure relief
● Removable control panel
● Ratio correction transformer
● Shunt & Series arresters
Product Design
Regulator Controller
SEL-2431 Universal Controller
VR-8 series step voltage regulator use Schweitzer Engineering Laboratories, Inc (SEL) universal controller box model SEL-2431 following standard IEEE C37.118.
◆ Built-In Reliability (10-Year Warranty)
◆ Plug-In Compatibility
◆ Advanced Tap-Position Tracking
◆ Easy Application Settings
◆ Quick Data Retrieval
Operating Specs: -40°C to +85°C | 88-132 VAC Power | 11-14VDC Aux Output | 45-540mA Current Range | 50-60Hz Frequency
FARADY Voltlogic-230 Digital Control
Microprocessor-based step-voltage regulator load tap changer control designed and manufactured by FARADY.
◆ Comply to IEC60255-1 & IEEE C37.118
◆ Simple, Intuitive LTC Controls
◆ MODBUS, IEC101/104, DNP3.0
◆ SCADA/DMS Integration
◆ Low Cost of Ownership
Quality Assurance
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 maintain consistent quality.
★ Routine Tests
● In-process Core Loss & Operation Test
● Winding Resistance & Polarity Test
● Insulation Power Factor & Oil DBV
● No Load Loss & Excitation Test
● Impedance Voltage & Load Loss
● Applied & Induced Potential Test
★ Type Tests
● Temperature Rise Test
● Lighting Impulse Level (BIL)
● Sound Level Test
● Short Circuit Test
Frequently Asked Questions
Q1: 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 32 individual steps of approximately 5/8% each.
Q2: Which international standards do these regulators comply with?
They are designed and tested according to IEEE Std C57.15 (Part 21), IEC 60076-21, IEEE C57.12.00, and IEEE C57.12.90.
Q3: What types of controllers are available for the VR-8 series?
Farady offers the SEL-2431 Universal Controller from Schweitzer Engineering Laboratories and the FARADY Voltlogic-230 Digital Regulator Control.
Q4: Can these regulators be used on both 50 Hz and 60 Hz systems?
Yes, voltage ratings are available for both 50 Hz and 60 Hz systems, ranging from 2400V to 34,500V.
Q5: What mounting options are provided for different kVA sizes?
Smaller kVA sizes include support lugs for pole mounting, while larger sizes feature substation bases with pad-mounting provisions.
Q6: What routine tests are performed for quality assurance?
Routine tests include Core Loss, Winding Resistance, Polarity, Insulation Power Factor, Oil DBV, No Load Loss, Voltage Ratio, and Applied/Induced Potential tests.