Four-Level Commissioning Equipment - Heterodyne Dielectric Loss Tester Product Features
(1) It has multiple working modes: positive/reverse wiring, internal/external standard capacitor, internal/external high voltage, integrated structure, can do various conventional dielectric loss tests without external auxiliary equipment.
(2) LCD display, menu operation, rich test data, automatically distinguish capacitive, inductive, resistive test objects, built-in micro printer for printout.
(3) It has an external standard capacitor interface, can connect an external oil cup for precise insulating oil dielectric loss test, can connect external solid material measuring electrodes for precise insulating material dielectric loss test, and can also connect an external high-voltage standard capacitor for high-voltage dielectric loss test.
(4) Automatically recognizes 50Hz 60Hz system power supply, and supports generator power supply, even if the frequency fluctuates greatly, it can measure normally.
(5) Built-in series and parallel two dielectric loss measurement models, convenient for instrument calibration.
(6) Can store 255 sets of measurement data.
(7) In CVT self-excitation method measurement, C1/C2 can be measured simultaneously with one wiring, automatically compensate the influence of bus grounding and standard capacitor voltage division, no need to change wiring or connect any external accessories.
(8) Chinese graphic menu, large screen backlit LCD display clearer, real-time monitoring of current and voltage.
(9) Optimized circuit design makes the accuracy and stability of positive/reverse wiring consistent.
(10) Automatically recognizes external high-voltage test power supply frequency 40Hz～70Hz, supports power frequency power supply, variable frequency power supply and series resonance power supply for large-capacity high-voltage dielectric loss test.
Four-Level Commissioning Equipment - Heterodyne Dielectric Loss Tester Internal Connection Mode
Test Voltage Test Object Capacitance
5KV 7.5KV 10KV 3PF~40000PF
1.5KV 2.25KV 3K 10PF~0.35μF
0.5kv 0.75kv 1kv 30PF~1.5μF
2.3.2.2 External Connection Mode
“External Step-up Transformer” mode test voltage 10KV
“External Cn” mode (external high voltage, external standard capacitor) test voltage determined by standard capacitor and test object (Umax=Imax/ωC)
Standard circuit maximum current 50mA (In=UωCn)
Test object circuit maximum current 2A (Ix=UωCx)
CVT ratio measurement:
Ratio measurement accuracy: ±reading×1% Ratio measurement range: 10～99999
Phase measurement accuracy: ±0.1° Phase measurement range: 0～359.9°
Measurement time: about 40s, depending on measurement mode
Input power: 180V～270VAC, 50Hz±1%, mains or generator power supply
Computer interface: standard RS232 interface
Printer: Weihuang A7 thermal micro printer
Ambient temperature: -10℃～50℃
Relative humidity: <90%
Dimensions: 460×360×350mm
Instrument weight: 28kg
