Wenzhou Modern Group is a leading company in the manufacture of Power Quality and Energy Saving Products in China.
Milestones:
- 1979: Founded as a manufacturer of transformer based power products
- 1988: Constant voltage transformer introduced and UL certified
- 1992: Became a strategic partner for GE Healthcare in China
- 1995: Obtained ISO9001 quality system
- 2003: Introduction of the patent variable transformer
- 2005: Became a strategy partner of Emerson Network Power
- 2010: Obtain CE for the voltage stabilizer
- 2013: Obtain CE for voltage optimization unit
Certification:
More Certifications we are
Applying... ...
Strict Quality Inspection:
Features:
1. Silent design with moving Long life roller carbon brushes, High reliability and low maintenance
2. Unique compact dimension.
3. Digital control.
4. Rich protection functions.
5. Efficiency up to 98%
6. Independent phase voltage regulation. Changeable through LCD
touchscreen display
on site.
7. Manual bypass, Automatic bypass (Optional)
8. Remote monitoring by RS485 or RS232 or WIFI, GPRS.
Our Patent Structure:
- Our patent carbon brush with high conductivity, small sparks, and
long life
- We use low speed, high start torque motor for stable operation
- Patent three phase individual voltage regulator, which realizing
the whole unit 2/3 smaller than traditional one.
Specifications:
Dimensions
Remote Control:
- Centralized management by computer
- Install special background monitoring software in a computer terminal can realize the remote operation and control.
HOW TO CHOOSE A VOLTAGE STABILIZER?
What's the difference between Roller carbon brush with the Flat carbon brush?
Six kinds of technology for the voltage stabilizer
Comparative of the different of Voltage stabilizer:
| Servo with the roller brush and columnar transformer | Servo with the flat brush and columnar transformer | Servo with the flat brush and Flat transformer | Induction AVR with Oil cooling | Electric AVR | Static AVR |
|---|
| Typical efficiency | ≥98% | ≥97% | ≥95% | 80%~90% | ≥90% | ≥98% |
|---|
| Power factor | 0.99 | 0.99 | 0.85~0.95 | 0.8~0.9 | 0.85~0.9 | 0.8 |
|---|
| Correction speed | 1s | 1s | 1s | Slow, 1 Min | 0.05s | 0.1s |
|---|
| Reliability | High | Middle | Low | High | Middle | Middle |
|---|
| Weight | Middle | Heavy | small | Very heavy | small | smaller |
|---|
| Dimension | small | Large | Middle | Huge | smaller | smallest |
|---|
| Noise | Silent with No Noise | Noise when Voltage regulated | Noise when Voltage regulated | Continuous Noise | Cooling Fan's Noise | Cooling Fan's Noise |
|---|
| Maintenance | Clean the dust once per 6 months | Clean the dust once per 6 months | Clean the dust once per 6 months | Complicated due to Oil | Clean the dust once per 6 months | Clean the dust once per 6 months |
|---|
| Application | All kinds load | All kinds loads | Family | Industrial | Residential Load | Residential Load |
|---|
| Install | Anywhere | Anywhere | Anywhere | Outdoor Only | Anywhere | Anywhere |
|---|
| Environmental | Clean | Clean | Clean | Polluted | Clean | Clean |
|---|
How to choose the capacity of the voltage stabilizer:
Principles
The voltage stabilizer and the voltage regulator are chosen
according to the current:
1 Continuous working current is smaller than the rated current of
the voltage stabilizer or voltage regulator, Better to have a
design margin of 20%.
2 The loads start current is smaller than 5 times of rated current of the servo voltage stabilizer with the roller brush and columnar transformer. or 2.5 times the servo voltage stabilizer with a flat brush, 2 times the static voltage stabilizer.
How to choose the capacity of the voltage stabilizer:
Loads Rated current:
Single phase:
Rated current In=Pn/(Vn*cosφ)
Three phase:
Rated current In= Pn/(1.732*Vn*cosφ)
Note:
Pn — Load capacity(kW),
Vn — Rated voltage(V), Tt is Line to Line voltage in three phase
system
Cosφ — Power factor.
How to choose the capacity of the voltage stabilizer:
Loads surge current:
Three phase(Motors):
1 Direct start: I(tmax)= In total + In(max)*6
2 Autotransformer start: I(tmax)= In total + In(max)*3
3 Star-Delta start: I(tmax)= In total + In(max)*3
4 Variable Frequency start: I(tmax)= In total + In(max)*2
5 Soft start: I(tmax)= In total + In(max)*3
Note:
I(tmax)— The max start current.
In total — The total rated currents of the loads
In(max)— The max starting current of the motor.
