发布时间：2015年04月30日 浏览量：335 次
MLZGF DC High Voltage Series portable generator is the power sector and industrial and mining enterprises of the surge arresters, cable and high-voltage DC voltage test equipment and leakage current test equipment, the equipment is based on "People＇s Republic of China Department of Energy standards" developed new-generation products, high-pressure metering station by the state inspection, in line with the "portable DC high voltage generator general technical conditions" (ZGF24003-90), some indicators better than the "metal-oxide surge arresters without gaps" (GB11032-89) requirements.
ZGF DC High Voltage Generator figures of the decade the use of new technologies, new materials and new devices, with output power of large, small size, light weight characteristics, a reliable over-voltage, over-current and zero closing protection, with 0.75 times the voltage latch function, and with time relay can be set from time to time during the trial voice alarm. The entire apparatus portable, easy to operate, safe, reliable, and is particularly applicable to field test the power sector.
2. Technical indicators and conditions of use
1. Technical conditions
Power Supply: AC220V ± 10%, 50Hz ± 1%
instructions output voltage accuracy: <1
instructions output current accuracy: <1
ripple factor: ≤ 0.5%
0.75 times the output voltage accuracy instructions: <1 with Latch
2. The use of conditions
Relative humidity: 25 ℃ when not more than 85%, non-Gel
Working mode: 30 minutes of continuous use
ambient temperature: - 10 40 ℃
altitude: 1500m below
internal over-voltage protection, internal overcurrent protection
external over-voltage protection (protection voltage setting), or breakdown of external overcurrent protection
Internal Power Protection
The protection of non-zero start
Timing Voice Alarm
Rated output DC voltage (kV) Rated output DC current (mA) Rated output power (W) times the box high pressure (m) Weight (kg)
ZGF-60 60 2 120 0.5 16
60 10 600 0.5
ZGF-120 120 2 240 0.8 20
120 10 1200 0.8
ZGF-200 200 2 400 1.2 26
200 10 2000 1.2
ZGF-300 300 2 600 1.7 31
300 10 3000 1.7
III. The principle block diagram
Digital ZGF DC High Voltage Generator application of the latest power electronics technology, the use of advanced technology and high-power PWM modulation MOSFET devices, through the intermediate frequency from voltage rectifier; ripple coefficient of the generator with a small, stable and reliable output, small size, weight the characteristics of light, and has a reliable, sensitive, internal protection, its block diagram shown in Figure 1.
Figure 1. Schematic diagram of
IV. Panel Description
Digital ZGF DC High Voltage Generator by the control box and the times the pressure device is composed of two parts, the control panel layout as shown in Figure 2.
1. Power outlet 2. Power switch
3. "High-voltage open" light is 4. "Zero" indicator light
5. "Overvoltage" light 6. "Flow" light
7. Current shows Table 8. Voltage display table
9. Time Relay 10. Button from time to time to open
11. 0.75 times the voltage displayed in table 12. Earthing terminal
13. Signal output socket 14. Measuring input socket
15. "High-voltage open" button 16. "Customs high-pressure" button
17. Voltage setting knob 18. Voltage coarse tune knob
19. Voltage fine-tuning knob 20. 0.75 times the voltage latch button
5. High-pressure times the pressure me explain
2. Grading Ring
3. Times the pressure tube
6. Signal input socket
7. Measurement of output socket
6. Operating methods and procedures
1. To operate pre -
Control box to the signal output cable socket 13 and socket 14 and the measurement of input voltage cable installations using a dedicated cable connection socket, and the use of pre-inspection of its good, there should not be connected to the cable short-circuit and open circuit; times the pressure tube should be no phenomenon Gel ; more than 2.5mm2 copper wire with control box will be grounded with the grounding terminal voltage devices connect and reliable grounding.
2. Voltage calibration setting
(1) plug in the power cord, open the control box power switch 2, Table 8 shows voltage and current displayed in table 7, and 0.75 times the voltage display Table 11 shows the values are zero.
(2) the voltage setting button 17 clockwise rotation in the end, voltage coarse tune knob 18 and voltage fine-tune the anti-clockwise rotation knob 19 to zero, zero bright light 4.
(3) touch, "high-voltage open" button 15, "high-voltage open" light is 3 (red) light. If by "high-voltage open" button 15, a red indicator light does not shine, that fine-tune voltage is not rough to reconcile zero, coarse tune voltage will be 18 and fine-tune knob 19 counter-clockwise rotation knob to zero, the red indicator light 3.
(4) voltage rough tune clockwise rotation knob 18, when the voltage close to the required voltage value, and then fine-tune voltage rotary knob 19 to the required voltage, the voltage at this time shows the value of units of kV, the value of current display units mA.
(5) anti-clockwise adjustment voltage setting knob 17, so that high-voltage turn-off, when the 3 red lights out, "over-voltage" indicator light 5.
Note the required equipment at this time the output voltage setting, that is, to reach the required output voltage automatically cut off the high voltage, over-voltage protection.
3. Sample test
(1) in the high-voltage output terminal between the terminal and access to test materials.
(2) Open the power switch 2, touch of "high-voltage open" button 15, "high-voltage open" light is 3 (red) light, slow coarse tune voltage adjustment knob 18 and voltage fine-tuning knob 19 to be tested. Voltage test instructions test Table 8 shows that voltage value, units of kV; 0.75 Table 11 times the voltage display instruction of the test voltage value of 75%, unit bit kV; current test instructions Table 7 shows the current value, units mA.
(3) In the course of the test sample of 0.75 times the voltage displayed by pressing button latch 20, is 0.75 times the voltage shows the value of Table 11 shows the lock to maintain the display value of the inconvenience, this MOA was doing it very convenient for testing may be used as reference voltage.
(4) from time to time, at any time, press the open button 10, the start-up time relay 9, in mind when the time arrived in default, the buzzer sounded alarms ring inquiry.
(5) In the course of the experiment, if the load current machines rated more than 0-10% of output current, the "flow" light 6 light, over-current protection to prevent damage to test products and equipment.
(6) after the end of the trial, anti-clockwise coarse tune voltage adjustment knob 18 and voltage fine-tuning knob 19, rotating to zero, the voltage display 8-bit slow to return to zero, "zero" indicator light 4. When the three shows that the zero value shown in the table below, the touch of the key high-pressure clearance of 16, when the 3 red lights out, and then turn off the power switch 2.
When a large sample capacity, the voltage coarse tune, fine-tune both to zero, the output voltage can not show the table back to zero, then the keys to their high-pressure clearance of 16, and then shut down. And then stick to discharge discharge test, and then try to remove goods to be wiring.
7. Common Faults and handling
No reason to deal with the phenomenon of
1 connected to a power switch, power switch indicator light does not shine, each table shows the first non-power bad; insurance into line disconnect power and check connections; replacement insurance
2 control box "to open high-pressure" light is bright but not high-voltage output signal output cable bad or open circuit, short circuit the cable, is checked whether the phenomenon is not connected or has open and reliable short-circuit phenomenon
3 step-up after boot but no display measuring voltage input ammeter bad cable or circuit, short circuit the cable, is checked whether the phenomenon is not connected or has open and reliable short-circuit phenomenon
4 can not switch 1) to reconcile the rough is not fine-tune the zero potentiometer or damage
2) the last operation over-voltage or over-flow for
1) coarse potentiometer fine-tune to reconcile back to zero or replacement
2) the closure of power switch, re-open
Special Note: The cable voltage test process, the step-up process should be uniform slow, step-down process should also be uniform slow.
Wuhan China Meilun electric power technology Limited company telephone 0086 +027-59528838 facsimiles: 0086+027-59840338