ESP Range
80kV, 32kW electrostatic precipitator PSU
| Basic Specification | Designed for the Electrostatic Precipitator market the ESP range is a high voltage power supply with an operating frequency of around 25kHz. The example shown is 32kW 80kV and it utilises an IGBT full bridge circuit to convert the DC bus to a high frequency AC waveform. Near full load, the working frequency is close to resonant frequency and almost all of the energy in the resonant components will be delivered to the load. A high frequency transformer steps up the high frequency AC to the necessary high voltage level. The components of the high voltage section are mounted in an oil fi lled tank. |
| Electrical Specification | |
| Input requirements | 415VAC 3-phase. Power supply voltage range from 370VAC to 450VAC |
| Output voltage | 0 to 80kVDC (Negative Output) |
| Output current | 0 to 400mADC |
| Power factor | >0.9 |
| Output ripple (%) | <2% at nominal load |
| Power conversion effi ciency | >90% at nominal load |
| Mechanical Specification | |
| Weight (kg) | Approx. 300kg |
| Size (WXDXH) | 700mm X 970mm X 1400mm |
| Interface Definition | |
| Feedback signals | 1. Output voltage 0 to 10V DC=0 to -80kV 2. Output current 0 to 10V=0 to 400mA 3. Spark detected 4. Inverter disabled 5. Current limit ( 440mA) 6. kV limit (80kV) 7. Fault detected (overheating, overcurrent, interlock etc.) |
| Control signals | 1. kV output demand 0 to 10V= 0 to -80kV 2. mA output demand 0 to 10V = 0 to 400mA 3. HV on 4. Inverter disable |
| Enviromental Specification | |
| Storage temperature range | - 40°C to + 50°C |
| Operating temperature range | - 20°C to + 40°C |
| IP class | 55 |
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