Four-Level Commissioning Equipment - Variable Frequency Dielectric Loss Tester Product Features
(1) It has multiple working modes including positive/reverse wiring, internal/external standard capacitor, internal/external high voltage, and an integrated structure. It can perform various conventional dielectric loss tests without needing any external auxiliary equipment.
(2) LCD display, menu operation, rich test data, automatic identification of capacitive, inductive, and resistive test samples, and built-in micro printer for printout.
(3) It has an interface for external standard capacitor, can connect an external oil cup for precision insulating oil dielectric loss tests, external solid material measuring electrodes for precision insulating material dielectric loss tests, and external high-voltage standard capacitor for high-voltage dielectric loss tests.
(4) Automatically recognizes 50Hz and 60Hz system power supplies, and supports generator power supply, allowing normal measurement even with large frequency fluctuations.
(5) Built-in series and parallel dielectric loss measurement models for easy 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 connection, automatically compensating for the influence of busbar grounding and standard capacitor voltage division, without changing wires or connecting any external accessories.
(8) Chinese graphic menu, large-screen backlit LCD display for clearer viewing, with real-time monitoring of current and voltage.
(9) Optimized circuit design ensures consistent accuracy and stability for both positive and reverse wiring.
(10) Automatically identifies external high-voltage test power supply frequency from 40Hz to 70Hz, supporting power frequency, variable frequency, and series resonance power supplies for large-capacity high-voltage dielectric loss tests.
Four-Level Commissioning Equipment - Variable Frequency Dielectric Loss Tester Internal Connection Method
Test Voltage Test Sample 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 Method
“External Step-up Transformer” method with test voltage of 10KV
“External Cn” method (external high voltage, external standard capacitor) with test voltage determined by the standard capacitor and the test sample (Umax=Imax/ωC)
Maximum current in standard circuit: 50mA (In=UωCn)
Maximum current in test circuit: 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: approximately 40s, depending on the measurement method
Input power: 180V～270VAC, 50Hz±1%, from mains or generator
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
