| Certification: | ISO9001, CCC, Type Test |
|---|---|
| Protection: | IP20 |
| Installation: | Indoor |
| Housing: | Aluminum Zinc Steel |
| Rated Voltage: | 400V |
| Compensation Time: | 38ms |
| Customization: |
|---|
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Audited Supplier Product: Low Voltage AC Voltage Regulator
Introduction: Regulating voltage unbalance compensation by ±50%(maximum)
Model :LDVR-RV
Installation: Floor standing &cabinet type
Brand: Sanhe
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) |
| 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 | |
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
Simulation of GRID Reactive Load Flow
Analysis of L-C Circuit Amplitude-frequency Characteristic
Integration & Relay Coordination Reaction
Characteristic Curve of Permanent Magnet Breaker
Sampling & Filtering of Electronic Circuit
IGBT Driving & Protection
PWM Technology
Technology about Semiconductor Forced Commutation
Thermal Simulation & Heat Exchange Design
Feed-forward Second-order Complex Vector Algorithm
3D & Data Simulation
Instrumented IOT Communication
VP Scheduling & Dispatcher
Digital Twins of Micro-Grid & Islanding-Grid
Sanhe has specialized in over 20 years experience in power quality products and solution. We have met most of power quality problems and gave the solutions.
What kind of technical service does Sanhe provide?
• Project-site power quality test ( or test report from customer)
• Improvement solution and budget
• Product solution and price
• Products supply
• Product commissioning
What kinds of standards does Sanhe product conform to?
Except China standards, Sanhe products also conform to IEC standards including
IEC61921 :2003 IEC61000-4-5:2005
IEC60529:2001 IEC60931-1: 1996
IEC60439-1 :2005 IEC60664-1 2007
IEC60831-1: 1996 IEC61000-4-3/2/4/5/18 IEC61000-2-4
IEC60255 IEC62208 2011…
IEC255-22-1
What is the compensation effect after using Sanhe products?
• Harmonic filtering meets standard
• Power factor is over 0.95,electrical bill saving,low reactive power penalty killing
• Reducing the loss of transformer and line
improve the distribution ability,
prolong the lifespan of electrical equipment
How long is the product guarantee time?
Usually,the guarantee time is one year. However,we can accept over 5 years too. Please contact our sales to get details information.
How to become the distributor or agent of Sanhe brand products?
Sanhe is looking for overseas distributor and agent. If you are interested in it, please feel free to contact us.
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