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Regulating voltage unbalance compensation by ±50%(maximum)
LDVR-RV
Floor standing &cabinet type
Sanhe
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Introduction
Sanhe series digital AC voltage regulator is a high-performance voltage regulator adopted DSP to control the electromagnetic switch matrix. Comparing with Sanhe LDVR, it is economical voltage stabilization device, which is widely used in such as industry, education, medical, communication, finance, etc.
The regulator provides accurate output via accurately controlling the polarity and electromagnetic coupling between the main and the compensation circuit of the compensation transformer. The compensation range is from 20-3000KVA.
It is more energy-efficient, safer and easier to maintain than traditional regulators. It can protect the safety of precision equipment, prolong the lifespan of the load equipment, and reduce unreasonable power consumption.
Application:
Power Usage
Technical Specification
Input | Range | 3phase 320V-440V, single phase 187V-255V(customized available) ,capacity: 10-3000kVA |
Frequency | 40HZ-70HZ | |
Output | Rated Voltage | L-N:220V,L-L380V,(Settable, for example:400V) |
Output Accuracy | 380Vac±1-1.5% | |
Output range | Settable 380Vac+/-10%(via Touchscreen) | |
Response | 38ms | |
THD | without added distortion | |
Efficiency | ≥99% | |
Unbalance degree | Within 2%(automatic balancing function) | |
Delaying output | Output after regulation(perfect protecting load from voltage shock impact) | |
Protection | Over voltage | Output L-N over 10% (245V),uninterrupted transfer to bypass with output fault voltage alarm |
Under voltage | Output L-N lower 10%(245V),uninterrupted transfer to bypass with output fault voltage alarm | |
Phase sequence | Auto-detect:phase error,phase loss and phase reverse,with alarm to shut down output | |
Overload | Electronic detecting,within three minutes to shut down overload and transfer to bypass | |
Over-current | Electronic detecting and MCCB protection | |
Short-circuit | Electronic detecting and MCCB protection | |
Bypass | Uninterruptible automatic bypass | |
Display | Language | English and Chinese |
Working status | Regulated state / mains state | |
Touch screen LCD | input and output voltage, output current, power factor, apparent power,active power, reactive power, frequency, load rate, temperature,running time record, fault record, power record, operation record; Accumulated running active energy(Kwh),reactive energy (Kvarh), etc. | |
Safety | Main flow straight through, non- waveform distortion,uninterruptible bypass switching | |
Intelligent | DSP controlled,event log,touchscreen setting,Remote telemetry.energy statistics, time switch | |
Reliability | Oil-free, non- mechanical abrasion, non- carbon brush,built-in air fan for transformer cooling | |
Energy Saving | Above 99% | |
Overload | 5 times ,1 second | |
Communication | Rs232，485 optional | |
Feature:
Fast Response
12-bit high-speed AD acquisition with 64 points per cycle, single-chip digital processing, electronic module fast compensation
Easy-maintenance
Settable adjustment way
Uniform adjusting : AD simultaneously sampling the effective average values of the three-phase voltages of A, B, and C.Based on this, the CPU will send instructions to compensate, thus effectively reducing the three-phase unbalance level.
Separate adjusting : The three-phase voltages are individually adjusted to ensure each accuracy range especially suitable for single-line load
Advanced measuring
12 bit AD acquisition,single chip doing digital filer and effective value calculation
Accurate control
Perfect combination between large-scale programmable logic devices and micro-controllers
NON THD
Zero-crossing switch switching,co-frequency, phase-locked.sine wave superposition compensation principle
Anti-harmonic interference
True RMS voltage detection
Wide application
Suitable for resistive, capacitive and inductive load etc
Soft-start
output after stabilized function
Comprehensive protection
When over-voltage or under-voltage occurs, it can be protected and transfer to bypass automatically within 1 second, with perfect phase loss,overload short circuit protection and sound and light alarm function after fault.
Working Principle
Introduction
Sanhe series digital AC voltage regulator is a high-performance voltage regulator adopted DSP to control the electromagnetic switch matrix. Comparing with Sanhe LDVR, it is economical voltage stabilization device, which is widely used in such as industry, education, medical, communication, finance, etc.
The regulator provides accurate output via accurately controlling the polarity and electromagnetic coupling between the main and the compensation circuit of the compensation transformer. The compensation range is from 20-3000KVA.
It is more energy-efficient, safer and easier to maintain than traditional regulators. It can protect the safety of precision equipment, prolong the lifespan of the load equipment, and reduce unreasonable power consumption.
Application:
Power Usage
Technical Specification
Input | Range | 3phase 320V-440V, single phase 187V-255V(customized available) ,capacity: 10-3000kVA |
Frequency | 40HZ-70HZ | |
Output | Rated Voltage | L-N:220V,L-L380V,(Settable, for example:400V) |
Output Accuracy | 380Vac±1-1.5% | |
Output range | Settable 380Vac+/-10%(via Touchscreen) | |
Response | 38ms | |
THD | without added distortion | |
Efficiency | ≥99% | |
Unbalance degree | Within 2%(automatic balancing function) | |
Delaying output | Output after regulation(perfect protecting load from voltage shock impact) | |
Protection | Over voltage | Output L-N over 10% (245V),uninterrupted transfer to bypass with output fault voltage alarm |
Under voltage | Output L-N lower 10%(245V),uninterrupted transfer to bypass with output fault voltage alarm | |
Phase sequence | Auto-detect:phase error,phase loss and phase reverse,with alarm to shut down output | |
Overload | Electronic detecting,within three minutes to shut down overload and transfer to bypass | |
Over-current | Electronic detecting and MCCB protection | |
Short-circuit | Electronic detecting and MCCB protection | |
Bypass | Uninterruptible automatic bypass | |
Display | Language | English and Chinese |
Working status | Regulated state / mains state | |
Touch screen LCD | input and output voltage, output current, power factor, apparent power,active power, reactive power, frequency, load rate, temperature,running time record, fault record, power record, operation record; Accumulated running active energy(Kwh),reactive energy (Kvarh), etc. | |
Safety | Main flow straight through, non- waveform distortion,uninterruptible bypass switching | |
Intelligent | DSP controlled,event log,touchscreen setting,Remote telemetry.energy statistics, time switch | |
Reliability | Oil-free, non- mechanical abrasion, non- carbon brush,built-in air fan for transformer cooling | |
Energy Saving | Above 99% | |
Overload | 5 times ,1 second | |
Communication | Rs232，485 optional | |
Feature:
Fast Response
12-bit high-speed AD acquisition with 64 points per cycle, single-chip digital processing, electronic module fast compensation
Easy-maintenance
Settable adjustment way
Uniform adjusting : AD simultaneously sampling the effective average values of the three-phase voltages of A, B, and C.Based on this, the CPU will send instructions to compensate, thus effectively reducing the three-phase unbalance level.
Separate adjusting : The three-phase voltages are individually adjusted to ensure each accuracy range especially suitable for single-line load
Advanced measuring
12 bit AD acquisition,single chip doing digital filer and effective value calculation
Accurate control
Perfect combination between large-scale programmable logic devices and micro-controllers
NON THD
Zero-crossing switch switching,co-frequency, phase-locked.sine wave superposition compensation principle
Anti-harmonic interference
True RMS voltage detection
Wide application
Suitable for resistive, capacitive and inductive load etc
Soft-start
output after stabilized function
Comprehensive protection
When over-voltage or under-voltage occurs, it can be protected and transfer to bypass automatically within 1 second, with perfect phase loss,overload short circuit protection and sound and light alarm function after fault.
Working Principle