The use and operation of power detection equipment need professional instructions or guidance, even a volt ampere meter also has its use operation, power safety we can not be careless. The following guodian zhongxing example, the use of digital double clamp phase voltammetry operation.
Press the on-off button to rotate the functional range switch to correctly select test parameters and limits.
1. Measure the AC voltage
Switch the functional range switch to the 500V quantity limit corresponding to the parameter U1, and the measured voltage can be measured by input from the U1 jack. If the measured value is less than 200V, the switch can be directly rotated to the 200V measurement limit corresponding to U1 to improve the measurement accuracy.
The two channels have exactly the same voltage test characteristics, so you can also dial the switch to the quantity limit corresponding to parameter U2 and input the measured voltage from U2 jack for measurement.
2. Measure the AC current
Dial the rotary switch to the 10A quantity limit corresponding to parameter I1, insert the outgoing wire plug of the vice side of the clamp current transformer labeled I1 into the I1 jack, and the clamp interface card can be measured on the measured line. Similarly, if the measured value is less than 2A, the switch can be directly rotated to the 2A measurement limit corresponding to I1 to improve the measurement accuracy.
When measuring the current, the rotary switch can also be dialed to the quantity limit corresponding to parameter I2, and the measuring pliers labeled I2 can be connected to the I2 jack, and the clamp interface card can be measured on the measured line.
Digital double clamp phase voltammeter
3. Measure the phase Angle between the two voltages
When measuring the phase Angle of U2 lagging U1, switch to U1U2. During the measurement process, the switch can be rotated clockwise to the variable limit of parameter U1 to measure the input voltage of U1 at any time, or rotated counterclockwise to the variable limit of parameter U2 to measure the input voltage of U2.
Note: during phase measurement, the symbols U1 and U2 next to the voltage input jack and the red "*" symbol of the clamp current transformer are the phase end with the same name.
4. Measure the phase Angle between the two currents
To measure the phase Angle of I2 lagging I1, switch to parameter I1I2. In the same measurement process, the switch can be rotated clockwise to each limit of parameter I1 at any time to measure the input current of I1, or the switch can be rotated counterclockwise to each limit of parameter I2 to measure the input current of I2.
5. Measure the phase Angle between voltage and current
The voltage is input from U1, and the current is input from I2 with I2 measuring pliers. The switch is rotated to the position of parameter U1I2, and the Angle of current lag voltage is measured. During the test, the switch can be rotated clockwise to measure the current at each limit of parameter I2 or counterclockwise to measure the voltage at each limit of parameter U1 at any time.
The voltage can also be input from U2, and the current can be input from I1 with I1 measuring pliers. The switch is rotated to the position of parameter I1U2 to measure the Angle of voltage lag current. In the same process, the switch can be rotated at any time to measure the value of I1 or U2.
6. Phase sequence discrimination of three-phase three-wire distribution system
Rotary switch set U1U2 position. Connect A of the three-phase three-wire system to the U1 jack, connect B to the corresponding ± jack of U1 and the corresponding ± jack of U2 at the same time, and connect C to the U2 jack. If the measured phase value is about 300°, the measured system is positive phase sequence. If the measured phase is about 60°, the measured system has a negative phase sequence.
In another measurement method, connect A to the U1 jack, B to the corresponding ± jack and U2 jack at the same time, and C to the corresponding ± jack and U2 jack. If the measured phase value is 120°, it is a positive phase sequence. If the measured phase value is 240°, the phase sequence is negative.
Phase sequence discrimination of three-phase four-wire system
Rotary switch set U1U2 position. Connect A to U1 jack, B to U2 jack, and connect the zero line to the ± jack of the two input loops at the same time. If the phase display is about 120°, it is a positive phase sequence. If the phase display is about 240°, the phase sequence is negative.
8, perceptual and capacitive load discrimination
Rotary switch set U1I2 position. The load voltage is connected to the U1 input terminal, and the load current is connected to the I2 jack through the measuring clamp. If the phase display is in the range of 0° ~ 90°, the load measured is perceptual; If the phase display is in the range of 270° ~ 360°, the load under test is capacitive.
Above is the use of digital double clamp phase voltammetry operation. If you need more power testing equipment, please contact the customer service of Guodian Zhongxing, and we will arrange professional technical engineers to contact you.
Wuhan Xinshengneng Technology Co., Ltd. specializes in the production of electric power metering test equipment, the production of a variety of products, complete models, cost-effective products, welcome to call 0312-3188565 consultation!
