Single-Phase PV Bidirectiona Automatic Voltage Stabilizer 1kva-60kva

Working Principle Explained

The stabilizer continuously monitors the input voltage through an automatic sampling control circuit. When voltage deviation is detected:

• The control circuit sends a signal to the servo motor
• The motor drives the sliding arm (carbon brush)
• The contact point on the autotransformer is adjusted
• Output voltage is stabilized to the rated value

This mechanical compensation method ensures:

• Smooth voltage regulation
• No step switching
• No additional waveform distortion

Key Advantages of Servo Voltage Stabilizers

• Large capacity capability – ideal for high-power single-phase loads
• High efficiency (up to 98%)
• No waveform distortion introduced
• Strong overload tolerance
• Stable performance under inductive, capacitive, resistive, and nonlinear loads
• Manual / automatic mode switching for flexibility

Compared with relay-type stabilizers, servo models provide continuous regulation rather than step-based correction, resulting in more stable output.

Electrical Parameters

1	Model		ADR 1Kva-60Kva
2	Rated Capacity		1Kva-60Kva
3	Ac Input	Number Of Phases	Single Phase 1P+N
		Rated Voltage	220V±20%
		Frequency	50/60Hz
4	Ac Output	Number Of Phases	Single-Phase 1P+N
		Rated Voltage	220V±2%
		Frequency	50/60Hz
5	Output Rated Current		4.55A-273A
7	Load Work		Continuous Operation At 80% Load
8	Productiveness		98%
9	Insulation Voltage		2500V/Min No Breakdown
10	Insulation Grade		F Level
11	Cooling-Down Method		Dry Natural Cooling
12	Regulation Accuracy		Factory setting: 2%V (adjustable from 1-5%)
13	Dielectric  Strength		2500Vac/Min
14	Noise		≤60db (Excluding Forced Air Cooling Systems)
15	Temperature Rise		≤75℃
16	Output Voltage Setting Range		220V±10%
17	Bypass Function		Manual Bypass
18	Defencive Function		Overvoltage, Undervoltage, Overcurrent, And Circuit Break Protection
19	Status Indication		Normal, Avr, Fault, And Bypass Indicators
20	Product Weight		About 55 (Kg)
21	External Dimensions		480 Mm Long, 360 Mm Wide, 580 Mm High
22	Panel Display		Lcd Digital Display
23	Certificate		Ce, Rohs, Iso9001 Certification
24	Environment	Temperature	-10～40℃
		Relative Humidity	15～90%（25℃）
		Above Sea Level	＜1500M
25	Defects Liability Period		The Entire Machine Is Covered By a 12-Month Warranty.
26	After-Sale Service		Resolved Within 24 Hours

Custom specifications are available upon request.

Servo vs Other Technologies

Compared to relay-based stabilizers, servo models offer:

• Higher precision
• Smoother regulation
• Better load adaptability

While SCR stabilizers respond faster, servo stabilizers remain preferred for high-capacity, cost-sensitive, and mechanically robust applications.

Selection Guidance

When choosing a servo voltage stabilizer, consider:

• Select a scaled-up capacity of 2-3 times.
• Voltage fluctuation range
• Installation environment
• Continuous operation requirements

ZHENGXI provides engineering-based selection support to ensure optimal configuration.

FAQ

Q1: Does a servo stabilizer distort the waveform?
No. The regulation process does not introduce additional waveform distortion.

Q2: Is regular maintenance required?
Minimal maintenance is needed. Periodic inspection of carbon brushes is recommended for long-term operation.

Q3: Can this stabilizer operate continuously?
Yes, it is designed for continuous operation under rated conditions.

Conclusion

The Single-Phase Servo Automatic Voltage Stabilizer (ADR Series) remains a dependable and economical solution for voltage regulation. With proven mechanical design, high efficiency, and strong load adaptability, it continues to serve as a cornerstone technology in power conditioning systems worldwide.