Product overview
The W-F series partial discharge-free power supply utilizes an excitation transformer to activate either series or parallel resonant circuits. By adjusting the output frequency of the power supply, it induces resonance between the reactor's inductance and the specimen's capacitance within the circuit, generating a resonant voltage equivalent to the applied voltage on the specimen. Alternatively, the intermediate transformer can directly output the voltage to the primary side for induction withstand voltage testing. This system is applicable for AC withstand voltage testing and partial discharge testing of all electrical equipment.
Product features:
● Output waveform is good, low voltage harmonic distortion rate, low harmonic content;
● Strong overload capacity, power unit modularization, can withstand the impact current of the motor, and does not cause voltage drop;
● Fast dynamic response, sudden load voltage transient change is small, fast recovery time;
● Intuitive display, easy to operate, using LCD Chinese and English touch operation display;
● Excellent stability, high frequency stability, produced by quartz oscillator, very stable and accurate frequency;
● Strong anti-interference, using optical fiber drive control, has strong anti-electromagnetic interference and reliability;
● High protection level, the surface of the equipment cabinet is treated with electrostatic spraying, and the PCB is treated with three-proof spray paint and potting compound.
App industries
It is used for AC withstand voltage and partial discharge test in fields such as transformers, circuit breakers, switches, GIS systems, cables, bushings, insulated terminals, etc.
unit type | WF60 -31100 | WF60 -31150 | WF60 -31200 | WF60 -31300 | WF60 -31450 |
power rating | 10KVA | 15KVA | 20kVA | 30KVA | 45KVA |
Input exchange indicators | |||||
Power supply type | Three phase four wire +PE | ||||
voltage range | 380V(±15W) | ||||
frequency range | 50/60Hz(±10W) | ||||
Output AC characteristics | |||||
Power supply type | Single phase two wire | ||||
voltage range | 0~800V- (standard)/0~1000V- (optional) | ||||
current range | 12A | 18A | 25A | 37A | 60A |
frequency range | Fixed frequency: 50/60Hz, frequency modulation: 30~300Hz | ||||
Source effect | ≤0.1MFS | ||||
Load effect | ≤0.1%F.S | ||||
voltage accuracy | ≤0.1%F.S | ||||
Frequency accuracy | ≤0.01%F,S | ||||
Voltage harmonics | ≤2W | ||||
response time | ≤5ms | ||||
Volume increases | ≤20pC (standard)/≤10pC (optional)/≤5pC (optional) | ||||
device efficiency | ≥90% | ||||
overload capacity | 120%~150%,1min; 150W~200%,2s; ≥200%. Immediately shut off output | ||||
system function | |||||
Online adjustment function | The output voltage and frequency can be adjusted online | ||||
Quick Settings feature | Multiple sets of output voltage and frequency can be customized | ||||
memory function | After power failure recovery, the last output mode and parameters can be remembered | ||||
defencive function | Input undervoltage and phase loss protection, output overvoltage, overcurrent, overload, short circuit protection, internal overheating protection, etc | ||||
Display and communications | |||||
Local operation | LCD display screen | ||||
display resolution | Voltage: 0.1V, current: 0.1A, frequency: 0.1Hz, power: 0.1kW | ||||
Display accuracy | Voltage: 0.1MFS, current: 0.2%F.S, frequency: 0.01%, power: 0.3F.S | ||||
telecommunication | RS 485/LAN | ||||
protocol | Standard Modbus RTU/Modbus TCP/IP | ||||
Safety performance | |||||
compression strength | 2000Vdc/60s/ no breakdown | ||||
insulation resistance | ≥20MΩ@500Vdc | ||||
earthing resistance | ≤100mΩ | ||||
noise | ≤65dB(A) | ||||
service environment | |||||
work environment | The ambient temperature is-20℃~45℃, and the relative humidity is 0~95%, which can work continuously for 24 hours | ||||
cooling-down method | Fan forced air cooling | ||||
levels of protection | IP 21 | ||||
above sea level | No more than 5000m@>2000m reduced use | ||||
Power supply (W*D+H) mm | 400*560*800 (including mobile wheels) | 400*660*800 (including mobile wheels) | 500×8201100 (including mobile wheels) | 500*820+1100 (including mobile wheels) | 520*1160*1355 (including mobile wheels) |
filter （WD+H）mm | 600*400*162 | 600*400*162 | 600400*162 | 600-400+162 | 1000+572*162 |
