Regulators knowledge and failure to maintain
First, Jin-Bao regulator works: regulator consists of voltage regulator circuit, a control circuit, and a servo motor, etc., when the input voltage or load changes, sampling control circuit, comparison, amplification, and then drive the servo motor rotation, so position changing carbon brush regulator, by automatically adjusting the coil turns ratio, so as to maintain a stable output voltage. Larger capacity regulator, also adopted the principle of working voltage compensation.
Second, Jin-Bao Regulators Categories: auto type --- non-compensated power supply (single-phase 0.5kVA ~ 3kVA, three-phase 9kVA and below) smaller capacity with 110V output voltage. Compensation --- compensation regulator power supply (single-phase 5kVA and above vertical, three-phase 15kVA and above) have compensation transformer, no 110V output.
Third, Jin-Bao regulator main technical parameters: single-phase three-phase project (three-phase four-wire system, sub-tone style) Hongbao regulator input voltage range: 160V ~ 250V phase voltage is 160V ~ 250V line voltage is 280V ~ 430V Hung Bao regulator output voltage 220V or 110V phase voltage 220V line voltage 380V overvoltage protection regulator Hongbao value 246V ± 4V phase voltage 246V ± 4V (subject to phase voltage) 426V line voltage regulation accuracy Hongbao Regulator ± 4%.
Fourth, Jinbao Regulator Selection Method:
1 safety factor capacity: AC power supply is output apparent power (kVA) is the nominal rated capacity, and under normal circumstances is not purely resistive load, ie power factor COS ￠ ≠ 1, the regulator can actually kW = active power output capacity (kVA) × COS ￠. Therefore, when the actual selection of rated power, power factor and load type of electrical equipment, according to the specific circumstances of a reasonable choice of power supply, the output power should leave adequate margin, especially when the impact load selection margin To more specific selection safety factor nature of the load factor of safety in the table below to select the type of device power supply capacity purely resistive load incandescent, resistance wire, electric and other equipment 1.25 to 1.51.25 to 1.5 times the total power inductive load, capacity load fluorescent lamps, fans, motors, pumps, air conditioners, computers, refrigerators, etc. 2 ~ 3≥2 ~ 3 times the total power load inductive, capacitive loads (such as motors, computer) environment, the selection should be considered starting current load is particularly large (up to 5-8 times the rated current), the regulator should be chosen so that the capacity is 2.5 to 3 times the load power. Such as: three-phase motor 2.2kW1 station, 5.5kW1 station, use the regulator, the capacity ≥ (2.2kW + 5.5kW) × 2.5 = 19.25kVA, namely at least to choose more than SJW-20kVA three-phase voltage regulator products.
2, Jinbao non-compensated power supply output capacity curve auto regulator (single-phase 0.5kVA ~ 3kVA, 10k horizontal and below, the three-phase 9kVA and below) when the input voltage drops below 198V, the output capacity is began to decline; when the input voltage is equal to 160V, down to 50% of rated capacity regulator. Therefore, the power supply voltage of the low-end special attention to reduce the load derating, so as not to overload the regulator burned; auto-regulator can simultaneously output two voltage 220V and 110V. But even when all the output from the 110V, load carried by the regulator can not exceed 50% of rated capacity, otherwise overload use. Jinbao regulator overload table overload (%) must not exceed the time (min) 206040306053, Jinbao regulator other considerations belong to each phase of the three-phase voltage regulator sub-tuning operation to allow a certain degree of load imbalance. However, when making a single-phase or three-phase power, each phase output maximum capacity of one-third of the nominal capacity of the machine, any one phase can not overload use. Unconventional input and output voltage range of products can be made, but the output capacity to special provisions.
V. Jinbao regulator common faults and maintenance, serial number, symptoms, cause of the malfunction Remedy:
A regulator, but not regulated output voltage (voltmeter indicates instability)
1. voltmeter bad or inaccurate output voltage measured with a multimeter, voltage meter to determine whether the instructions exactly, such as damage or inaccurate be replaced. 2. The input voltage is not within the 160V ~ 250V range of brushes in extreme position, the machine can not regulate input voltage is out of range, the outside world will have to adjust the input voltage.
3. Faulty wiring (not the zero line) Three-phase power supply for the three-phase four-wire connection, the input must be connected to the zero line (three-phase 1.5kVA ~ 4.5kVA goods enter if you do not take the zero line, the output voltage may occur more than 400 volt line voltage or over 300 volts line voltage situation).
The board allowed the sampled voltage adjusting potentiometer circuit board (cis tone boost, the buck).
5. Product dust caused by excessive carbon card dead inside the dust cleanup products, coil grinding polished to ensure smooth surface.
6. The circuit board is broken, replace the circuit board.
7. Motor short circuit or stuck, the motor does not turn, replace the motor.
8. The load is frequently initiated inductive or capacitive loads. Change the load start-up mode, increasing the capacity of the regulator or power supply.
9. compensation coil zero line Weld (line loose) re-welding the zero line.
Two no voltage regulator output (voltmeter does not indicate)
1. overvoltage or undervoltage caused no output. Input voltage is not within the scope of the relevant panel indicator lights adjust external input voltage.
2. Enter the three-phase product is not the zero line or phase, output contactor does not pull, no voltage output, brushes coil irregular rotation, Brush limit switch sound may occur overvoltage, undervoltage indicator irregular bright and so in strict accordance with the three-phase four-wire wiring wiring method CONTINUED two no voltage regulator output (voltmeter does not indicate).
3. The circuit board connectors aging bad or poor contact check the board connector is loose or oxidized rust, without exception it is possible that the board is damaged, replace the circuit board.
4. coil damage (user selection is too small or long-term overload caused by short circuit coil damage) according to the above selection method reasonable selection regulator capacity.
5. The plug is not seated, no input voltage, check the outlet so that the plug is inserted firmly.
6. The fuse burned, replaced with a spare fuse specifications.
7. Output contactor bad replace the contactor.
8. The output contactor frequent moves, resulting in no voltage output control circuit board is broken, replace the circuit board.
Three regulator not properly regulator (brushes not adjusted)
1. The circuit board or motor bad bad bad replace the circuit board or motor.
2. No input power Check input power is normal (wiring is solid, if there is lack of equal).
Four regulator load is normal but does not work with load
1. Check the zero line is bad the zero line.
2. The zero line wrongly connected to the ground to replace the zero line.
3. large load, resulting in increased voltage range input voltage is below the power supply capacity, the inductive load by 2 to 3 times the load capacity of the selection. 4. Enter the cross-sectional area of ??the wire is too long or not enough, the line pressure drop using copper wire, or an appropriate increase in the cross-sectional area of ??the conductor. After the regulator load product temperature rise, coil burning smell.
5. overload, overloaded reduce the load or use a large-capacity power supply.
6. The input voltage is low (non-compensation regulator when the input voltage drops below 198V, derating use).
Fifth, the product leakage chassis ground and neutral reversed the ground and neutral are the correct method of access.
Sixth, the regulator output products, but the larger three-phase output error
1. Three-phase or three-phase input voltage output load error is large uneven Check the input voltage and output load three-phase output.
2. The circuit board has error output adjustment potentiometer to adjust the output potential, so that each phase output phase voltage is 220V (when adjusting potentiometer to between FireWire and the zero line voltage date).
Seven, went after the motor power regulator extreme positions (brushes hit fretting) can not be reset.
1. triode circuit board burned out, not the normal sample (eg 9012; 9013; 8550 et burn will appear in this case) to replace the circuit board 2. The micro-switch is broken or stuck replace micro switch.
3. Replace the motor short circuit inside the motor.
Eight, after the regulator power does not start properly, brushes at the low end of the coil, and often occurs after a power outage calls, if the voltage is too low before the power failure, when the voltage is normal and then calls the coil is inductive load, the current impact of too much easy to cause Blown fuses cause the product does not start first off, check the fuse is burned, the carbon brushes with a screwdriver to position the coil in the middle position, then boot.
Nine, an internal power supply abnormal noise when walking Brush issued a clear "cracking rip" ignition coil poor contact between brush and brush and coil noise or cause the product to dust or other causes coil grinding uneven, dirty or oxidation to remove dust or other impurities, if not eliminate, use fine sandpaper to coil partial oxidation and carbon brush carefully polished to make good contact with the coil brushes. Coil noisy load large or reduce load or replace loose core coil motor noise gear wear or dislocation replace the motor or gear with installed sound output contactor contactor core debris or dirt, wipe off dust or replace the contactor .
Regulators Caution: 1. To ensure safety, the regulator housing must be grounded (native housing is provided with grounding device).
2. Do not use Covers or cover article from the regulator of normal cooling, so as to cause overheating and damage the regulator.
3. After prolonged use of the regulator, to ask professionals (electrician) to clean the machine dust maintain coil cleaning brush and grinding, and grinding dust caused by excessive brush drag area is too large, the available fine sandpaper lightly polished coil grinding surface and into contact with the rotating brushes good brush wear caused by the pressure is too small, to adjust the contact pressure of the brushes on the coil, avoid sparking brushes; found serious brush wear, to be replaced, otherwise power supply will cause damage.
4. Press the power supply capacity of the reasonable selection of input and output wire cross-sectional area, generally copper press (4 ~ 5) A / mm2 select, aluminum halved, to minimize line power loss