Overview
MOEORW-4700A is a high-precision test instrument for measuring the tangent value of dielectric loss and capacitance of high-voltage power equipment on site or in the laboratory. The instrument has an integrated structure, built-in dielectric loss test bridge, variable frequency adjustable voltage power supply, step- transformer and SF6 high stability standard capacitor. The test high voltage source is generated by the inverter inside the instrument, and is used for the test of the sample after being stepped by the transformer. The frequency can be changed into 50.0Hz, 47.5Hz\52.5Hz, 45.0Hz55.0Hz, 60.0Hz, 57.5Hz\62.5Hz, 55.0Hz\65.0. The digital notch technology is used to avoid the interference of the power frequency electric field to the test, and the problem of accurate measurement under the strong electric field interference is fundamentally solved At the same time, it is also suitable for the occasions where all power is cut off and the generator is used to supply power for inspection. The instrument, equipped with an oil cup and a temperature control device, can test the insulation oil dielectric loss.
Large LCD Chinese display
The instrument is equipped with a high-end full-touch LCD display screen and a large full- operating interface, making each process very clear and straightforward. The operator does not need additional professional training to use it. A gentle click can complete the measurement of the entire process, which currently an ideal intelligent dielectric loss measuring device.
Massive storage data
The instrument is equipped with a calendar chip and a large capacity storage device inside, which can save 200 sets of data. The detection results can be saved in chronological order, and the historical records can be viewed and printed at any time.
Scientific and data management
Instrument data can be exported via a USB flash drive and viewed and managed on any PC.
Multiple test modes
The instrument can test using various methods such internal high voltage, internal standard, positive connection method, reverse connection method, and self-excitation method.
Non-disassembly of high voltage leads to measure CVTThe instrument can correctly measure the dielectric loss value and capacitance value of the CVT without dismantling the high voltage lead of the CVT.
CVT reverse connection shield method to measure C0
The instrument can use the reverse connection shielding method to measure the dielectric loss value and capacitance value of C0 at the upper end of the CV.
High-speed sampling signal
The inverter and sampling circuit inside the instrument are all digitally controlled, and the output voltage is continuously adjustable.
Multiple protection safe reliable
The instrument has multiple protection measures such as input voltage fluctuation, high voltage current, output short circuit, power failure, overvoltage, overcurrent, and temperature, ensuring the and reliability of the instrument. The instrument also has the function of setting grounding detection, ensuring that devices that are not grounded are not allowed to operate and start testing. There an alarm function when the power supply is incorrectly connected to 380V on site, which can protect the instrument from damage
|
1 |
Conditions of Use |
-1 ℃ to 40℃ |
RH < 80% |
||
|
2 |
Anti-interference principle |
Frequency conversion method |
|||
|
3 |
power supply |
AC 220V±10% |
Allow generator |
||
|
4 |
High voltage output |
0.5kV to 10kV |
Every 0.1kV |
||
|
Accuracy |
2 % |
||||
|
Maximum current |
200mA |
||||
|
capacity |
2000VA |
||||
|
5 |
Self-excited power supply |
AC 0V~50V/15A |
one frequency 50.0 Hz , 60.0 Hz Automatic dual frequency conversion 45.0Hz /55.0Hz 47.5Hz / 52.5Hz 55.0Hz / 65.0Hz 57.5Hz / 62.5Hz |
||
|
6 |
resolution |
Dielectric loss tgδ: 0.001% |
Capacitor Cx: 0.001pF |
||
|
7 |
Accuracy |
Dielectric loss Δtgδ: ±(reading * 1.0% + 0.040%) |
|||
|
Capacitance ΔC x : ±(reading * 1.0% + 1.00pF) |
|||||
|
8 |
Measuring range |
Dielectric loss tgδ |
Unrestricted |
||
|
Capacitor C x |
15pF < Cx < 300nF |
||||
|
10kV |
Cx < 60nF |
||||
|
5kV |
Cx < 150nF |
||||
|
1kV |
Cx < 300nF |
||||
|
CVT test |
Cx < 300nF |
||||
|
9 |
External dimensions (main unit (mm)) |
350 (L) × 270 (W) × 315 (H) |
|||
|
External dimensions (accessories) (mm) |
350(L)×270(W)×160(H) |
||||
|
1 0 |
Memory size |
200 sets support USB flash drive data storage |
|||
|
1 1 |
Weight (main unit) |
2 2.5 5kg |
|||
|
Weight (accessory box) |
5.25kg |
||||
We provide you with free consultation services
Engineers provide guidance for installation and commissioning
Technicians can provide on-site maintenance services and receive regular training
Perfect technical consulting service system
Send your message to us:
Contact Us
Address: China Optics Valley No. 1, Fenghuangyuan 2nd Road, Donghu High-tech Development Zone, Wuhan City
whmoen@163.com
24-Hour service hotline
15997412136
Unified service hotline
400-017-7185
Follow Us
