Technical Features of Power Frequency High Voltage Generator
1. Smaller size, lighter weight, more beautiful, more reliable, easy to operate, complete functions, suitable for field use, is the most ideal reliable product in the new century.
2. Adopting the latest technology and process manufacturing, taking the lead in applying the latest PUM intelligent pulse width modulation technology, pulse train logic array modulation, using high-power IGBT devices, using intelligent technology to improve efficiency, frequency up to 40kHz, thus making the output high voltage stability higher, ripple coefficient smaller.
3. Using computer control technology, on the large screen LCD display shows output DC high voltage, current, overvoltage setting, timing, grounding and various protection information.
4. *Intelligent poor grounding protection and alarm function (cannot boost voltage when grounding is poor), voltage measurement circuit disconnection protection (instrument cannot boost voltage when high voltage measurement circuit is disconnected), emergency stop button, greatly improving the safety of operators during operation. In special cases, the poor grounding protection alarm function can be disabled (such as when using a generator as power source or when the site grounding is poor but testing can still be carried out.) High precision, accurate measurement. Voltage and current meters are digital display, voltage resolution is 0.1kV, current resolution is 0.1uA, the voltmeter on the control box directly displays the voltage value applied to the load test object, no external voltage divider is needed, wiring is simple. The instrument has high and low voltage end measurement of leakage current, the high voltage end uses a circular shielded digital display, not afraid of discharge impact, good anti-interference performance, suitable for field use.
Technical Parameters of Power Frequency High Voltage Generator:
Output Voltage (kV) 300
Output Current (mA) 2
Output Power (W) 600
Charging Current (mA) 2
Control Box Weight (kg) 6
Voltage Doubler Cylinder Weight (kg) 10
Voltage Doubler Cylinder Specifications (mm) Ф110 1040
Voltage Measurement Error 1% (full scale) ±1 digit
Current Measurement Error 1% (full scale) ±1 digit
Overvoltage Setting Error Overvoltage protection is set by dial code, clear at a glance (accuracy ≤1.0%)
0.75 Switching Error High precision 0.75UDC-1mA single touch button (accuracy ≤1.0%) most suitable for zinc oxide arrester test
Ripple Coefficient ≤0.5%
Working Mode Intermittent use: rated load for 30 minutes, 1.1 times rated voltage for 10 minutes
Working Environment Temperature: -10℃～+40℃
DC High Voltage Generator Relative Humidity: not greater than 85% at room temperature 25℃ (no condensation)
Altitude: below 1500 meters
With Capacitive Load No limit on capacitance of test object
Structural Features Electrical insulated voltage doubler cylinder
Air insulated, no leakage concerns
Ripple Coefficient: ≤0.5%
0.75 times output voltage indication accuracy: <1 level, with latch
Fault Inspection and Handling:
1. When the power switch is turned on, if the digital display on the control box does not light up, please check the power cord and all fuses. If the fuse is damaged, replace it with a new fuse according to the ampere rating marked next to the fuse holder.
2. If the power switch is turned on, the digital display lights up, but the high voltage green light does not light up, and high voltage cannot be applied.
(1) Fault display "Return to Zero" light is on: not returned to zero position, please turn the high voltage output adjustment knob and fine adjustment knob counterclockwise back to zero until the "Return to Zero" light goes off, then high voltage can be applied.
(2) Fault display "Other" light is on, there are two phenomena: grounding protection; disconnection protection. a. The grounding wire may not be connected properly, or the ground wire is not reliably grounded. Please connect a reliable grounding wire, turn off the power, and restart. b. The cable connecting the control box and the high voltage tower may not be connected properly. Please connect the cable, turn off the power, and restart. Or if the solder joints at both ends of the cable wire are desoldered, this fault will occur. Please solder the solder joints at both ends of the cable, turn off the power, and restart. c. A wire end inside the control box may be desoldered and disconnected. Please re-solder it, turn off the power, and restart.
3. Everything is normal, but protection occurs during the process of not reaching the rated output voltage.
(1) Fault display "Overcurrent" light is on a. Test object short circuit, or leakage current too large. b. When large capacitive load, boosting voltage too fast, turn off power, restart, slow down the boosting speed.
(2) Fault display "Overvoltage" light is on The overvoltage protection setting knob is not placed at the maximum position, please turn it clockwise to the maximum, turn off the power, and restart.
4. When a short circuit occurs under high voltage of the test object, due to the large short circuit current, it is possible that all fault indicator lights are lit, which is normal. Please eliminate the test object fault and restart.
5. After the test object fault is eliminated, the fault indicator light is still on, and high voltage cannot be applied. The power switch also serves as the fault protection reset switch. Please turn off the power and restart, then boosting can be performed.
6. If the voltage meter digital fluctuation is too large, please check whether the 7-pin aviation plug joints at both ends of the connecting cable are desoldered and disconnected. If disconnected, please solder them.
