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Summary of Contents for Electro-Tech systems 812
- Page 1 HIGH VOLTAGE POWER SUPPLY Model 812 Operating Manual 4/09...
- Page 2 Volts. DESCRIPTION The Model 812 High Voltage Power Supply, shown in Figure 2.0-1, is a self- contained unit that produces a variable high voltage output at low current levels. It can operate from line voltages of 90 to 240 V, 50/60 Hz. The maximum output is approximately ±10,000 Volts D.C.
- Page 3 This self-latching (push-on-push-off) switch located in the right hand lower corner of the front panel controls the AC power to the unit. The switching power supplies used enable the Model 812 to operate from line (mains) voltages of 90-240 VAC, 50/60 Hz. When depressed, the AC power will be ON and the front panel indicator lamp and display will be illuminated.
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Page 4: Operation
Indicators The Power Supply contains three (3) LED’s that indicate the polarity and High Voltage ON/OFF status. It also contains a 4½-digit LED numeric readout to display the actual output voltage level and polarity. 2.2.1 OFF This single RED LED alerts the user that voltages above 100V are present at the output and appropriate care should be taken. - Page 5 Current Output Limiting Resistor The current output of the supply is limited to 100 microamperes by an internal 100 MegOhm resistor. This enables the Model 812 to safely charge personnel when performing electrostatic discharge testing (ESD) using an actual person to initiate the discharge.
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Page 6: Maintenance And Calibration
Each unit is tested and calibrated at the factory and comes with a Certificate of Calibration when shipped. However, the calibration of the Model 812 should be checked periodically. The unit should be returned to ETS for calibration once a year or performed by the customer if proper calibrated instrumentation is available. - Page 7 FS Adjust Figure 4.2-1: Location of calibration adjustment pots 3. Turn on the Model 812 and the calibrated voltmeter and allow at least a 10 minute warm-up period. The high voltage should be off. 4. With the high voltage off the display should read 0000 ±1 count.
- Page 8 Voltage Power Supply board for 10.250V. It is R1 located at the rear of the board. Check the reading at the reverse polarity. This completes the calibration of the Model 812 High Voltage Power Supply. For service assistance please contact ETS at 215-887-2196. If the equipment has to be returned, first obtain a RMA number by calling the above number.
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Page 9: Warranty
5.0 WARRANTY Electro-Tech Systems, Inc. warrants its equipment, accessories and parts of its manufacture to be and remain free from defects in material and workmanship for a period of one (1) year from date of invoice and will, at the discretion of Seller, either replace or repair without charge, F.O.B.
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