ZGF Series
DC 60kV 120KV 200KV High Voltage Test Equipment DC Hipot Tester
Product introduction:
ZGF series DC high voltage Generator tester is a new generation
portable DC high voltage tester designed and manufactured according
to the new Chinese power industry standard DL/T848.1-2004 "General
technical conditions for DC high voltage generators". It is mainly
used in the power sector of power sector, industrial and mining,
metallurgy, steel and other enterprises to conduct DC withstand
voltage test on high-voltage electrical equipment such as zinc
oxide surge arresters, power cables, transformers and generators.
Function: for DC high voltage test of zinc oxide arresters, power
cables, generators, transformers, etc.
Product Features :
1. Aluminum alloy carrying box
2. With High Frequency Voltage-multiplying circuit, PWM technology
and high power IGBT device
3. Adopts voltage feedback, Higher voltage stability, smaller
ripple coefficient.
4. Full range smooth voltage regulation, regulation accuracy≤1%,
stability≤1%, voltage current error +/-1.5%±d
5. Raise voltage from zero voltage potentiometer
6. The 75% UDC 1mA function button is convenient for Zinc Oxide
Arrester test.
7. Over voltage cylinder uses dialing number set, and the error
+/-2%.
8. It’s coated with special insulating materials with good electric
performance and water resistance
9. The product conform to DL/T848.1-2004 technology requirement,
also passed test of quality inspection
Technical Parameter:
Rated voltage: 60kV/120kV, Rated current: 2mA/3mA/5mA
Power supply: AC220V±10％, 50Hz
Ripple coefficient: ≤3.0％
Voltage measuring accuracy: ±(1.5 %reading±2digit)
Voltage stabilization: stochastic wave, ≤1％ when power wave±10%
Specification
Parameters | 60/2 | 60/5 | 120/2 | 120/5 | 120/10 | 200/2 | 200/5 | 200/10 | 300/2 | 300/5 |
|
| Rated Voltage (kV) | 60 | 60 | 120 | 120 | 120 | 200 | 200 | 200 | 300 | 300 |
| Rated Current(mA) | 2 | 5 | 2 | 5 | 10 | 2 | 5 | 10 | 2 | 5 |
| Rated Power (W) | 120 | 300 | 240 | 600 | 1200 | 400 | 1000 | 2000 | 600 | 1500 |
| Box Weight (kg) | 8 | 8 | 2 | 5 | 9 | 4.5 | 4.5 | 5.5 | 5.5 | 5.5 |
| High voltage cylinder Weight (kg) | 4 | 5 | 6 | 8 | 9 | 7 | 8.3 | 9.3 | 11 | 11.5 |
| High voltage cylinder Hegiht (mm) | 440 | 440 | 535 | 535 | 750 | 890 | 970 | 980 | 1250 | 1250 |
| Voltage measuring accuracy | Digital Meter ±(1.5%reading±2words) |
| Current measuring accuracy | Digital Meter ±(1.5%reading±2words) |
| Ripple factor | ≤3% |
| Voltage stability | Random fluctuations, changes ≤1% when power supply±10% |
| Over Load capacity | No load voltage can be 10% more than rated voltage working 10
mimutes, maximum charging current is 125% the rated current |
| Power supply | Single phase AC 50HZ 220V±10% |
| Working way | Intermittently |
| One time continuous working: 10 minutes |
| Working environment | Temperature: 0~40℃ |
| Relative Humidity is no more than 85% when room temperature is
25℃(No condensation) |
| Altitude: below 1500 meters |
| Structure character | Exopy glass steel electrical insulated high voltage cyclinder |
| Air insulation, no worry of leakage |
| Operation box character | High precision 0.75UDC1mA single touch button (accuracy≤2.0%), most
suitable for zinc oxide arrester test |
| Dialing number set for overvoltage protection |
| All in an aluminum alloy box, integrated structure, portable |
What should be paid attention to when using DC high voltage
generator?
DC high voltage generator is mainly used for DC withstand voltage
test of high voltage electrical equipment, such as generators,
transformers, power cables, zinc oxide surge arresters and other
high voltage electrical equipment. The scope of application covers
different industries of power, steel, industrial and mining, and
metallurgy. For the testing of high voltage electricity, safety has
always been a top priority. ZGF series DC high voltage generators
have the advantages of portability and high test accuracy, and have
been widely recognized by users. So what issues need attention in
the process of using the instrument? As follows :
1. The DC high-voltage generator must be used in strict accordance
with Article 168 of the "Electrical Safety Regulations". At the
same time, before the test power supply enters the equipment, two
obvious disconnect points must be installed. The power
disconnection points are clearly disconnected.
2. Make sure that the grounding wires of the tester control box,
voltage doubler and the test object are connected well before the
test. The ground wire of the test circuit is grounded strictly in
accordance with the equipment manual.
3. The discharge of the large-capacitance test sample shall be
performed by a 100Ω / V discharge resistance rod. When discharging,
pay attention that the discharge rod can not immediately contact
the test object, but gradually approach the test object until a
certain distance from the air gap begins to free hiss. When there
is no sound, you can use the discharge rod to discharge, and
finally directly connect the ground wire to discharge.
4. During the test, testers should not shake hands with each other
or touch the ground with their hands. Otherwise, a slight electric
shock will occur. This is because when the DC high voltage is 200
kV and above, the testers wear insulation boots and Outside the
safety distance, however, the influence of the high-voltage DC ion
space electric field distribution causes different DC potentials on
several standing bodies nearby. This phenomenon is more pronounced
in dry areas and in winter, but it generally does not cause harm to
people due to less energy.
5. After the test, be sure to hang the ground wire to the
high-voltage output end before removing the high-voltage lead.
6. Note that when using the test instrument, you must confirm that
there is reliable grounding. Do not hold the high-voltage outgoing
cable in your hand. Pay attention to safety.
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