Induction Electronic AVR–PLR
Product Introduction


Specially for whole plant power equipment

Induction No-Contact Oil-Immersed Electronic Automatic Voltage Regulator has durable solid mechanism and is suitable for large current load and whole plant voltage regulating environment regulator. Conventional conductive mechanism with new cubicle design increased energy conservation and heat radiating efficiency for more than 20%. After 20-30 years service, recyclable material is higher than 90%



Solid mechanism and durable

Self-detecting function

Intelligent logic voltage regulation design

Alarm for abnormal over/low voltage output

Adopt no-contact voltage adjustment

Alarm for abnormal phase loss and phase reverse

Continuous stepless voltage regulating design

Alarm for abnormal temperature

Output voltage in linear voltage increased and decreased control

Allowed for externally connecting tripping switch for performing cut-off power function

Output voltage free of noise interference

With voltmeter and ammeter to monitor the use
of 3 phase

No distortion

Efficiency higher than 98%



Production Line

Production Line


Shipping Dock Communicating


Function Description:
Clear Meter Design Excellent and Precision
Main Control Circuit
Precision Controlled
Protecting Device
Wide-angle meter design, 3 phase voltage and current can be clearly identified Modular exchangeable control mode design – a more humanized design concept Main control elements are equipped with over-current protecting switches and fuses


Alert Dry
Self-Detecting Oil Level Gauge Manual Adjusting
Audio Alarm

Equipped with
alert dry contact
for connecting
externally circuit
to control room
for easy monitor

At each starting,
it can rapidly de-
tect the present
situation to be safe

Window of oil
level gauge has
effect allowing
clearly viewing
present oil level

After control system
switched off, this
device can be used
to adjust voltage
manually to needed
Adopt multi-layer
big range preset
switch to meet the
optimal needs
At abnormal, other
than light indicator,
there are also audio
alarm and action of
alert dry contact


Model & Specification:


Model No. (PLR-) 3300 3400 3500 3600 3750 31000 31250 31500 31750 32000 32500 33000
Capacity (KVA) 300 400 500 600 750 1000 1250 1500 1750 2000 2500 3000
Voltage X2: 3ψ 3W 200V, 220V, 230V, 240V system (I/P and O/P are the same)
X3: 3ψ 3W 380V, 400V system (I/P and O/P are the same)
X4: 3ψ 3W 415V, 440V system (I/P and O/P are the same)
Frequency 50 or 60Hz ±5%
Input Range ±15%
Output Range ±10% adjustable
Output Accuracy Within ±1.5%
Efficiency ≧98%
Waveform Distortion No distortion (the same with input waveform)
Fault Warning When voltage too high, too low, phase failure, phase reverse and over temperature, it will alarm automatically
Panel Indicator Input voltmeter, output voltmeter, output ammeter, fault lamp, power lamp
Environment Temperature: 0℃~40℃   Humidity: 20%~90% RH (Non-Condensing)

User manual  

Outline Appearance