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SINGLE PHASE STEP VOLTAGE REGULATOR

Farady Electric Co.,Ltd 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

VR-8 voltage regulators are designed for reliable operation and ease of mainte-nance and are supplied with a full array of standard features for routine applications. Optional accessories are available to ac-commodate special applicate it is also suitable for the energy saving projects for railway and urban grid. Farady Electric series voltage regulators are available with a full complement of standard

features for routine applications, as well as a full line of optional accessories for unique applications. In addition, the regulator offers desirable features that enhance operation and service.

Standard Features
  • SEL control box
  • 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
  • Mounting provisions for shunt arresters
  • High-creep bushings with clamp-type connectors
  • Bolt-down provisions (overhead units)
  • Pole-type mounting brackets (overhead units)
  • Substation base (substation units)
  • External series arrester
  • Automatic pressure relief device
  • Control cabinet with removable front panel
  • Ratio correction transformer
  • Conformally coated circuit boards
  • Shunt arresters
Optional Accessories

• Extra-length control cables
• Elevating structure
• 4-hole NEMA® H-spades
• Cooling fans
• Nameplates in alternate languages or metric units
• Internal differential potential transformer for complete reverse power flow w/metering
• SEL control accessories
• Multi-phase functionality
• Front panel overlays in alternate languages
• Serial communications interfaces:
– RS232
– Fiber Optic – ST
– RS485
• Ethernet communications interfaces:
– Fiber Optic – LC, MTRJ, ST, and SC
– Copper – RJ45
• Communications protocols:

Technical Specification

VR-8 single-phase step voltage regulators are tap-changing autotransformers designed to automati- cally regulate distribution line voltages in a range of plus or minus 10% in 32 steps of approximately 5/8% each. The following ratings are available:

  • Voltage: 2500 Volts (60 kV BIL) through 33000 Volts (200 kV BIL)
  • Current: 50 through 1665 Amps
  • KVA: 33 through 1000
  • Frequency: 50 or 60 Hertz

 

Internal potential winding taps and/or an external ratio correction transformer are provided on all ratings so that each regulator may be applied within a range of system voltages.

 

A digital control system automatically operates the tap changer mechanism to maintain system voltage within desired limits. The control system is externally programmable to allow precise setting of control limits and provides sophisticated capabilities for special control require- ments, communication, and data logging.

 

Overhead type voltage regulators are supplied with support brackets for pole mounting and have bolt-down provisions for pad-mounted applications. Substation type voltage regulators are provided with rectangular substation bases. Elevating platforms are available as an option.

.

General Specification

Operating temperture -40-+85
power supply 120VAC,
range 88-132VAC,
Burden less than 35VA,
Interruption less than 50ms at 120VAC per IEC60255-11
120VAC whetting source
Range 88-132 VAC,
Rated Current 6A(motor fuse) 120VAC
auxiliary output source Range 11-14vdc,
output power 6w at 12vdc
Metering Accuracy:load current+_ 0.3%+-500uA(0.001-2.000A)and 0.5°(0.020-2.000A)harmonics(2nd-15th) current:+-5% of fundamental(0.02-0.64A) voltage +10.3% and +-0.5°(80-145vac) Synchrophasor Accurancy
Maximun data rate in messages per second
IEEE C37.118 protocel 60(nominal 60hz system) or 50(nominal 50hz system)
IEEE C37.118 accuracy Level 1 at maximum message rate when frequency-based phasor compensation is enabled
Nominal current 450mA,
Current range 45 to 540mA

Frequency range+_ 5hz of nominal(50-60Hz)

voltage range 80-145V(voltage range is limited by power supply ratings)

phase angle range-180 to 180°

 

VR-8 series step voltage regulator use Schweitzer Engineering Laboratories ,Inc(SEL) universal controller box model number  SEL-2431

Basic scheme of power transmission and distribution

123654

1.Generator
2.Step-up Transformer
3.Transmission line
4.Step-down transformer
5.Distribution network
6.Monophasic Voltage regulator up to 36kV
7.Distribution Transformer
8.Cunsumer

Flexible Communications Options

Creating the perfect voltage profile

  Apply the SEL-2431 to your single-phase voltage regulators to optimize your voltage profile—now and in the future. After initial construction, feeder load growth causes drastic, unplanned voltage deviations. Single-phase voltage regulators installed at the midpoint or cascaded throughout the feeder can dynamically flatten the voltage profile.

 

Stay Connected to Your System, Even Without a Network

Use the SEL-2431 to capture event reports, load profile, tap history, and other system parameters; then use a USB flash drive to retrieve the data. Event reports and load profile capture valuable data about the events on your system, while tap history,

motor current oscillography , and SER contain valuable data about the state of

your voltage regulator. Together, these data enable you to stay connected for troubleshooting, analysis, and planning

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Available Retrofit Kits

Replace existing voltage regulator controls with the SEL-2431 direct replacement mounting and wiring kits. These kits provide all the parts needed to easily replace existing controls with the SEL-2431.

 

Direct Replacement Mounting/ Wiring KitPart Number
Siemens/Allis-Chalmers: 10-position polarized

disconnect switch (PDS) interface

9253002
Howard Industries: 10-position connector

terminal strip (CTS) interface

9253003
Cooper/McGraw-Edison: 18/10-position fanning

strip (traditional interface)

9253004
Cooper: 20-position connector

(dead-front interface)

9253005
GE: fork-terminal connections

(traditional interface to cabinet NN terminals)

9253006
GE: 24-position connector

(power disconnect interface)

9253007 

 

Operating Characteristics


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Voltage (kV)Load Current (Amperes)kVAA

(inch)

B

(inch)

C

(inch)

D

(inch)

E

(inch)

Oil

(L)

Untanking

WGT(LBS)

WGT

(LBS)

 

7.62

 

95kV

BIL

503875682438202208001450
1007675682538202258201650
15011480753245222508501750
21916782783649223059801890
328250868040612751115803250
438333969042632973119883887
54641610610044672985522224730
13.8

110kV

BIL

506980722835202208601450
10013880722847222759501800
150207827640522536014502665
200276958740652868022004320
30041410598437233110023505700
400552110105477238150029007500

 

Voltage (kV)Load Current (Amperes)kVAA

(inch)

B

(inch)

C

(inch)

D

(inch)

E

(inch)

Oil

(L)

Untanking

WGT(LBS)

WGT

(LBS)

 

14.4

 

150kV

BIL

507275682749222658601680
100144827444452435012802250
200288958745572855520004000
300432989146673080026505000
400576110100517133115031656400
19.92

200kV

BIL

50100857637502540010002100
100200888040562858018003300
167333928643582968022004120
200400958842673080027005000
33566710695537335130035006800
34.5

200kV

BIL

5016512210832513075710802000
100330125112396340148016383350
150495128118517340156717653760
200660130121467640164818354100

VR-8 series step voltage regulator use Schweitzer Engineering Laboratories ,Inc(SEL) universal controller box model number  SEL-2431Controller box

Built-In Reliability, Ten-Year Warranty

Reduce maintenance and repair costs with a voltage regulator control designed and tested to relay standards. Mounted in a rugged, castaluminum

housing, the SEL-2431 Voltage Regulator Control includes the SEL worldwide, ten-year, no-questions-asked warranty.

Plug-In Voltage Regulator Compatibility

Quickly upgrade existing voltage regulator controls without removing the regulator from service. The SEL-2431 mounts directly into existing control cabinets for Cooper, GE, Howard Industries, and

Siemens 32-step, single-phase voltage regulators.

Advanced Tap-Position Tracking

Know your tap position with the SEL-2431. The SEL-2431 monitors and records motor current and lets you quickly review and analyze tap-change waveform reports for better visibility into the condition of your voltage regulator.

Easy Application Settings

Accelerate installation and commissioning with application-specific

settings. Regulate voltage while applying advanced metering and event recording capabilities with fewer than 20 settings.

Simple and Flexible Communications

Quickly integrate the SEL-2431 into Ethernet or serial communications networks with DNP3, SEL, and synchrophasor protocols. Both

the serial and Ethernet ports are available with copper and fiber-optic connection options.

Connect and Retrieve Data Quickly

With a USB flash drive, you can conveniently transfer settings, upgrade firmware, retrieve data, and expand onboard storage capacity. The data that can be retrieved through this interface

include event reports, tap-change history, load profile data, and Sequential Events Recorder (SER) data.

 

General Specification:

Operating temperture -40-+85 

power supply 120VAC,

range 88-132VAC,

Burden less than 35VA,

Interruption less than 50ms at 120VAC per IEC60255-11

120VAC whetting source 

Range 88-132 VAC,

Rated Current 6A(motor fuse) 120VAC 

auxiliary output source Range 11-14vdc,

output power 6w at 12vdc 

Metering Accuracy:load current+_ 0.3%+-500uA(0.001-2.000A)and 0.5 degree(0.020-2.000A)harmonics(2nd-15th) current:+-5% of fundamental(0.02-0.64A) voltage +10.3% and +-0.5 degree(80-145vac) Synchrophasor Accurancy

Maximun data rate in messages per second

IEEE C37.118 protocel 60(nominal 60hz system) or 50(nominal 50hz system) 

IEEE C37.118 accuracy Level 1 at maximum message rate when frequency-based phasor compensation is enabled 

Nominal current 450mA,

Current range 45 to 540mA 

Frequency range+_ 5hz of nominal(50-60Hz) 

voltage range 80-145V(voltage range is limited by power supply ratings) 

phase angle range-180 to 180 degree

VR-8 series step voltage regulator use Schweitzer Engineering Laboratories ,Inc(SEL) universal controller box model number  SEL-2431 

125

ICMI UVR-1

ICMI regulator controller have over 40 years ICMI has set the standard for technology and reliability in control technology for the utility industry.

 

  1. Simple, intuitive, controls for voltage regulators, LTC transformers and reclosers 
  2. Flexible communication options integrate the controls to SCADA/DMS systems for remote control monitoring, volt/VAR optimization and distributed generation 
  3. Low cost of ownership delivered with industry leading warranties, a software based design approach and outstanding customer service and technical support 

 

 

  • DNP3 Subset Definition Level 2 Slave Device with Report By Exception 
  • Integrates seamlessly to SCADA/DMS Systems 
  • Multiple power flow modes and voltage reduction methods 
  • Locked Forward, Locked Reverse, Idle Reverse, Neutral Reverse, Bi-directional, Bi-directional with Tap to Neutral and Co-generation 
  • Ideal fit for centralized and distributed volt/VAR optimization 
  • Protocol Port – serial EIA-232, EIA-485 and daughter board selectable 
  • Hardened EIA-485 daughter board 
  • Fiber-optic daughter board 
  • Wi-Fi/Ethernet fiber-optic daughter board 
  • 5 or 8 port XIO interface boards 
  • Supports multi-drop and loop configurations 
  • Comprehensive data logging & metering 
  • Tapchanger contact wear log with alerts 
  • Tap timeout feature to prevent voltage runaway 
  • Quick programming via front panel or the included UVR-1 Configuration Utility 
  • Battery backup available 
  • Compatible with any single and multi-phase step voltage regulators including Type “A” regulators without load side PT’s 
  • Rail and Harness Kits: GE (SM3,NN Strip), Siemens (IJ,SJ,MJ-XL,MJ-4), Cooper (CL1-5, CL6) and Howard Industries 

Operation conditions

  1. a) The LTC shall operate in oil with temperature ranging from -25℃ to 100℃.
  2. b) The LTC should be stored in air with ambient temperature within [-25℃, 40℃].
  3. c) The LTC should be mounted on voltage regulator with perpendicularity not less than 5%. d) No sever dust and explosive& corrosive gas in field.

control circuit diagram

control circuit diagram

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