The power supply voltage stabilizer can be said to be a very effective and safe electrical auxiliary equipment, the application range is very wide. However, it is in is a process, due to various reasons, there will inevitably be some problems. The following is the common faults of the power regulator and maintenance methods that I have organized for you.
Power regulator repair method
First, when the power is on, the voltmeter does not indicate
Trouble causes
1, the power plug is not plugged in tightly, the voltage is not output.
2. The fuse is broken.
Repair method
1, check the power outlet, the power plug firmly.
2, check the fuse, according to the requirements of the replacement of the fuse in line with the regulations.
Second, the voltage regulator can stabilize the voltage, but the value of the voltage regulator shifted
Fault causes
1, the voltmeter read value is not accurate
2, the voltage trimmer potentiometer shifted.
Repair method
1, check the voltmeter, as appropriate, repair or replace it.
2, the voltage trimmer potentiometer for correct adjustment.
Third, the voltage regulator coil burned out
Fault causes
The load of the regulator is too large, has exceeded the normal load range of the regulator.
Repair method
Replace the voltage regulator coil. When replacing, pay attention to the regulation voltage as well as the installation position of the coil, if you can not operate correctly, even if you replace the coil, it will burn out again.
Fourth, connected to the regulator after the circuit breaker switch tripped
Failure causes
1, the regulator's input line is connected to the wrong.
2, high breaking circuit breaker switch rated current is not correct.
Repair method
1, check the input line of the voltage regulator, connect it correctly.
2. Replace the appropriate high break circuit breaker.
V. The output voltmeter keeps swinging back and forth and the carbon brushes produce sparks
Reasons for the failure
1, the carbon brushes are seriously worn out.
2, carbon brush and voltage regulator coil plane contact pressure is too small.
Repair method
1, replace the new carbon brush.
2. Use a fine file or sandpaper to clean the carbon brush and voltage regulator coil, and then adjust the pressure of the carbon brush.
Six, three-phase does not start, no output voltage
Trouble causes
1, the control circuit board does not work.
2, the control circuit board in the protection state.
3. Input phase is missing.
Repair method
1, the control circuit board does not work is generally dropped or damaged itself, need to repair or replace.
2, the control circuit board in the protection state, generally the input phase line voltage beyond the regulated range, as long as the input voltage can be adjusted.
3, the correct input three-phase, should be three-phase four-wire system or five-wire system.
Power regulator classification
LW-SBW compensated
Basic structure:
Using a motor to drive carbon brushes in the self-coupling transformer winding sliding between the turns to adjust the output voltage directly or through the compensation transformer to adjust the output voltage.
Technical indicators:
Input range: single-phase 176V-264V/three-phase 304V-456V Frequency: 47HZ-63HZ
Output rating: phase voltage 220V, line voltage 380V Center voltage value adjustment range?8%
Voltage regulator precision: ? (1-5)% Conventional setting is ?2% Fast response time (200ms for one power cycle)
Voltage: Pointer display Current: Pointer display
Operating status: Voltage regulator/ mains status
Abnormalities: overvoltage, undervoltage, overload, fuse breakage
Operating modes: voltage regulator and mains mode
Overload capacity: 4 times the rated voltage. Overload capacity: 4 times the rated current for 2 seconds
LW-SVCE high-precision voltage regulator
Basic structure:
This series of voltage regulator is composed of contact-type autotransformer, servo-motor, automatic control circuit, etc., when the grid voltage is unstable or the load changes, automatic sampling regulator control circuit sends out a signal to drive the servo motor, adjusting the regulator self-coupling regulator carbon brushes position. Coupled regulator carbon brush position, so that the regulator output voltage adjusted to the rated value and reach a stable state. This series of voltage regulator for ordinary type, with utility through function (need to explain when ordering). This series of voltage stabilizers have the advantages of more varieties, full specifications and beautiful appearance. With waveform distortion, high efficiency, reliable performance, long-term operation and other characteristics, the regulator has a short delay, over-voltage and other protective functions, according to the needs of users can add a long delay and under-voltage protection. This voltage regulator can be widely used in any place of electricity, is an ideal voltage stabilizer power regulator), to ensure the normal operation of your electrical equipment.
Technical indicators:
Single-phase specifications: 0.5 ~ 3KVA 5 ~ 10KVA 15 ~ 40KVA
Input voltage: 140 ~ 260 150 ~ 250V 170 ~ 270V
Output voltage: 220V? 3% and 110V? 3% 220?3% 110V 220?3% is available
Over-voltage protection value: 220V 220?3% and 110V 220?3%.
Over-voltage protection value: 246?4V
Efficiency >95%
Three-phase specifications: 1.5-9KVA 15-30KVA 40-60KVA
Input Voltage: Line Voltage 250-450 Line Voltage 270-430V Line Voltage 295-460V
Output Voltage: Three-phase balanced, Phase voltage 220V? 3%, line voltage 380V? 3%
Over-voltage protection phase voltage 246V? 4V, line voltage 425V? 7V
Efficiency: more than 90%
LW-JJW/JSW purified
Basic structure:
Adopts the combination of sinusoidal wave energy distribution and filter, by adjusting the on-off of the primary circuit SCR. Commonly used in precision electronic equipment, medical equipment, computer rooms, laboratories, product aging and testing.
Technical indicators:
Input voltage: 185V~250V 320V~430V
Output voltage: 220V?1% 380V?1%
Power frequency: 50Hz?2Hz Response time: 20ms~100ms
Efficiency: (under full load) >90% (1KVA), -2KVA), -2KVA, -2KVA. 2KVA), >93% (above 2KVA)
Spike Absorption Input: 1500V~/3?s Output?5V Audio Noise: ?60db
Output Overvoltage Protection Value: 246?4V
Operating Environment: Temperature -10℃~40℃ Humidity: 20%~85%
LW-ZBW non-contact type
Basic structure:
By switching one or more groups of thyristors when the voltage or current is over zero, the compensation winding of one or more transformers in the compensation transformer group can be boosted, bucked, short-circuited at the primary level, or switched to regulate the output voltage by switching the taps of the autotransformer. The use of high-power thyristor (thyristor) instead of mechanical and carbon brushes to control the voltage regulator, the capacity can be 2000KVA, compensation range up to 50%, the efficiency of up to 99% or more, is to lead the development of the direction of the high-power power regulator replacement products, energy-saving green products, with all the protection functions, very reliable, adaptable and strong. Realize the full non-contact voltage regulation, with good stability, high efficiency and other advantages, the regulator has a filtering device on the grid without pollution, can be in a variety of bad grid and complex loads under reliable continuous work, long service life, can run continuously without failures more than 100,000 hours, realize the regulator long-term maintenance-free.
Technical indicators:
Input: frequency 50HZ~60HZ Rated voltage: phase voltage 220V, line voltage 380V
Center voltage value adjustment range?7%
Voltage regulator precision: ? (1~5)% selectable (conventional setting is ?2%)
Fast response time: (20ms for one power supply circumference)
Waveform distortion without additional waveform distortion (static)
Efficiency: ?98%
Three-phase imbalance three-phase voltage auto-balance
Output: Delayed output first stabilized and then output (to protect equipment from Over-voltage output phase voltage more than 10% (245V), cut off the output or uninterrupted turn to bypass
Under-voltage output phase voltage is less than 10% (195V), cut off the output or uninterrupted turn to bypass
Out-of-phase with (automatic cut-off)
Overload electronic detection, overload cut off the output within 3 minutes
Over-current Electronic detection and circuit breaker double protection
Short-circuit electronic detection and circuit breaker double protection
Protection:
Bypass uninterrupted automatic bypass
Voltage A, B, C, ?ABC three-phase respectively with true RMS digital display
Current A, B, C, ?ABC three-phase respectively with true RMS digital display
< p> Operating state voltage regulator state/utility stateIndication:
Abnormal over-voltage, under-voltage, overload, fuse broken
Working mode: with the voltage regulator and utility two kinds of working mode
Overload capacity: 2 times the rated current for 20 seconds
About the power supply voltage regulator
p> Power regulator is a power supply circuit or power supply equipment that can automatically adjust the output voltage, its role is to stabilize the fluctuating and non-electrical equipment requirements of the power supply voltage in its set value range, so that a variety of circuits or electrical equipment can be in the rated operating voltage under normal operation. Voltage regulator can be widely used in: industrial and mining enterprises, oil fields, railroads, construction sites, schools, hospitals, post and telecommunications, hotels, scientific research and other departments of electronic computers, precision machine tools, computer tomography (CT), precision instruments, test equipment, elevator lighting, imported equipment and production lines and other places that require power supply stable voltage. Also adapted to the power supply voltage is too low or too high, the fluctuation amplitude of the end of the low-voltage distribution network users and load changes in the power equipment, especially for all the power grid waveform requirements of high voltage stabilization of power places. High-power compensated power regulator can be connected to thermal, hydraulic, small generators.