JY Variable Frequency Dielectric Loss Tester Technical Specifications
1. Ambient temperature: 0～40℃ (LCD screen should avoid prolonged sunlight)
2. Relative humidity: 30%～70%
3. Power supply: voltage: 220V±10%, frequency: 50±1Hz
4. Dimensions: length×width×height = 490mm×300mm×390mm
5. Weight: approx. 18kg
6. Output power: 1kVA
7. Display resolution: 4 digits
8. Measurement range:
Dielectric loss (tgδ): 0-50%
Capacitance (Cx) and applied voltage:
2.5kV range: ≤ 300nF (300000pF)
3kV range: ≤200nF (200000pF)
5kV range: ≤ 76nF (76000pF)
7.5kV range: ≤ 34nF (34000pF)
10kV range: ≤ 20nF (20000pF)
9. Basic measurement error:
Dielectric loss (tgδ): 1%±0.07% (load current 20μA～500mA) normal connection
Dielectric loss (tgδ): 2%±0.09% (load current 5μA～20μA) reverse connection
Capacitance (Cx): 1.5%±1.5pF
JY Variable Frequency Dielectric Loss Tester
Structure
The instrument is an integrated structure of voltage boosting and measurement, with output voltage adjustable in five ranges from 2.5kV to 10kV to suit various needs, requiring no external equipment during measurement. The wiring is similar to the QSI bridge, but more convenient.
Figure 1 shows the instrument operation panel, and Figure 2 shows the instrument wiring terminal face.
(1) Display window——LCD screen.
(2) Test voltage selection switch——When the switch is set to "Off", the instrument has no high-voltage output.
(3) Operation keyboard——Select measurement mode, start, stop, print, and other operations.
(4) Power socket——Fuse uses 5A.
(5) Power switch——Power on/off.
(6) Start light——Indicates high-voltage output.
(7) Printer——Prints test results.
★★★★(8) Ground terminal——Before use, this terminal must be reliably grounded!!!
★(9) Measurement current input terminal IX——Has two lead ends: the center lead (red, marked CX) should be connected to one end of the test object; the shield lead (black, marked E) is a reference terminal for the internal high-voltage output, which should be grounded in normal connection measurement; in reverse connection measurement, it should be left floating; for external connection, refer to "External High-Voltage Method".
★(10) Standard current input terminal IN——Only used when measuring with an external standard capacitor; this terminal should be connected to one end of the external standard capacitor. IN must be less than 100mA!!!
(11) Measurement high-voltage output terminal UH——Only one large iron clip lead (marked UH) is provided, to be connected to one end of the test object.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
