Four-Level Commissioning Equipment - Heterodyne 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 routine 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 a built-in micro printer for printout.
(3) It has an external standard capacitor interface, can connect an external oil cup for precision insulating oil dielectric loss tests, can connect external solid material measuring electrodes for precision insulating material dielectric loss tests, and can also connect an 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. Even with large frequency fluctuations, normal measurement can be performed.
(5) Built-in series and parallel dielectric loss measurement models for convenient instrument calibration.
(6) Can store 255 sets of measurement data.
(7) When measuring with CVT self-excitation method, C1/C2 can be measured simultaneously with one wiring connection, automatically compensating for the influence of bus grounding and standard capacitor voltage division, without needing to change wiring or connect 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 positive/reverse wiring.
(10) Automatically recognizes external high-voltage test power supply frequencies from 40Hz to 70Hz, supporting power frequency, variable frequency, and series resonant power supplies for large-capacity high-voltage dielectric loss tests.
Four-Level Commissioning Equipment - Heterodyne 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, test voltage 10KV
“External Cn” method (external high voltage, external standard capacitor), test voltage determined by standard capacitor and test sample (Umax=Imax/ωC)
Standard circuit maximum current 50mA (In=UωCn)
Test sample 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: approximately 40s, depending on measurement method
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
Purpose:
The instrument is also suitable for measuring tgδ and capacitance of high-voltage electrical equipment in workshops, laboratories, and scientific research institutions; it has advantages such as convenience, simplicity, and accuracy for insulating oil loss testing.
The dielectric loss tester can measure high-voltage electrical equipment that is ungrounded or directly grounded using positive and reverse wiring methods.
The dielectric loss tester is equipped with a built-in high-voltage step-up transformer and incorporates safety protection measures such as zero-crossing switching and lightning protection. During the test, it outputs high voltages of different levels from 0.5KV to 10kV, making operation simple and safe.
