WJRL-II single-phase capacitance inductance tester
1. Overview
The fully automatic capacitance and inductance tester is specially developed to address the problems that exist when measuring the capacitance value of capacitors on site at a substation. It focuses on solving the following problems:
(1) On-site measurement of capacitors requires removal of connecting wires, which not only requires a heavy workload but also easily damages the capacitors;
(2) The output voltage of the capacitance meter is low, resulting in a low fault detection rate.
This instrument has the characteristics of small measurement workload, fast and simple, stable performance, accurate measurement and high fault detection rate.
(3) Measure the inductance of the reactor.
2. Technical parameters
1. Instrument measurement range and accuracy:
a.Capacitance measurement
(1)Measurable capacitance range: 0.1μF～3,300μF
(2)Measurable capacity range: 5～20,000kvar
(3)Measurement accuracy: ±(1.0% reading +0.02μF)
(4) Resolution: 0.001μF
b. Current measurement
(1) Current measurement range: 0~20A
(2)Measurement accuracy: ±(3.0% reading +0.05A)
(3) Resolution: 0.01A
c.Inductance measurement
(1) Inductance measurement range: small inductance mode 0.1mH～5mH
Large inductance mode 5mH～50H
(2) Inductive reactance measurement range: 50mΩ~20KΩ
(3)Measurement accuracy: ±(3.0% reading +0.05mH)
(4) Resolution: 0.01mH
d. Resistance measurement
(1) Resistance measurement range: small resistance mode 50mΩ～1Ω
Large resistance mode 1Ω～20KΩ
(2)Measurement accuracy: ±(3.0% reading +0.05Ω)
(3) Resolution: 0.01Ω
2. Working power supply:
a.Rated voltage: power frequency 220V±10%
b. Rated frequency: 50Hz
c. Rated output: 2V/20V/500VA
3. Normal working conditions of the instrument:
a.Ambient temperature: -10℃～+50℃
b. Relative humidity: ≤90%
4. Display and printing method: LCD display with full Chinese characters, panel-type high-speed printer
5. Appearance/weight: 370×260×220mm/12kg
This capacitance and inductance tester adopts a bridge circuit structure, with the standard capacitor and the capacitor under test as the two arms of the bridge circuit. When measuring the capacitance value of a capacitor, the test voltage is applied to the standard capacitor and the capacitor under test at the same time. The processor collects the current signals flowing through both through the sensor and processes them to obtain the capacitance value of the capacitor under test.
Due to the use of synchronous sampling technology of standard capacitors and tested capacitors, it is not affected by power supply voltage fluctuations; in addition, the measurement process is fully automatic, avoiding errors caused by manual operation. Therefore, it has the characteristics of good stability, good repeatability, accuracy and reliability, and the machine has short circuit protection function.
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Fax：027-87051228
Mail：whjydq_666@163.com
Address: Building 5, Donghu High tech Industrial Innovation Base, No. 9 Miaoshan Avenue, Jiangxia District, Wuhan City
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