Table of Contents

Overview

The Automatic Capacitance & Inductance Tester is specially developed to tackle difficulties encountered when measuring capacitance of individual capacitors within shunt capacitor banks at substation sites. It mainly addresses the following issues:
(1) Measuring single capacitors on site requires disconnecting wiring, which brings heavy workload and risks damaging capacitors.
(2) Low output voltage of common capacitance meters leads to low fault detection rate.
(3) It can measure inductance of reactors.

The instrument features less measurement workload, easy operation, stable performance, high measuring accuracy and superior fault detection capability. In addition, its current measurement unit can also be used to test CVTs, surge arresters and other electrical equipment, realizing multi-purpose functionality.

Features of this tester model

(1) Automatic range switching;
(2) Storage capacity for 7168 test records;
(3) Large-screen LCD (320×240) display with Chinese menu operation prompts;
(4) Simultaneous display of waveforms and processed measurement data for intuitive testing;
(5) Equipped with setting, calibration and debugging functions.

Technical Parameters of Three Phase Inductance Capacitance Tester

Item	Specification
Capacitance Range	0.2μF ~ 2,000μF
Capacity Range	5 ~ 20,000 kvar
Capacitance Measurement Accuracy	0.2μF ~ 2μF: ±1% reading ±0.02μF 2μF ~ 2,000μF: ±1% reading ±2 digits
Inductance Range	1mH ~ 9.99H
Inductance Measurement Accuracy	±1.5% reading ±2 digits
Output Test Voltage	AC 26V/500VA; 50Hz
Display	Large LCD screen with full Chinese display; built-in panel thermal printer
Dimensions / Weight	370×370×220 mm / 16 kg
Ambient Operating Temperature	0℃ ~ +40℃, Relative Humidity: ≤90%
Power Supply	AC 220V±10%; 50Hz

Working Principle

Sampling circuits collect voltage and current signals of the capacitor branch under test. Outputs of sampling circuits are connected to amplifier circuits. Voltage signal from voltage amplifier and current signal from current amplifier are sent to phase detector to generate phase difference signals. After A/D conversion, voltage and current signals are transmitted to CPU for calculation to obtain capacitance value.
The movable current sampling unit enables direct capacitance measurement without disconnecting wiring.
Automatic range selection during measurement eliminates errors caused by manual operation, delivering outstanding stability, repeatability, accuracy and reliability.

Packing List

No.	Description	Qty	Unit	Remarks
1	Three Phase Inductance Capacitance Tester Main Unit	1	Set	Built-in thermal printer
2	Test Cable Set (Voltage & Current Clamp Wires)	1	Set	For capacitance & inductance measurement
3	Power Cord AC220V	1	Pcs
4	Thermal Printing Paper Roll	2	Rolls	Spare
5	Operation Manual	1	Copy	English & Chinese version
6	Calibration Certificate	1	Copy	Factory test report
7	Hard Carry Case / Foam Packing	1	Set	Export safe packaging

FAQ for Three Phase Inductance Capacitance Tester

Q1: Can the tester measure capacitors without disconnecting connecting wires on site?

A1: Yes. Equipped with movable current sampling unit, it supports live measurement for shunt capacitor banks without removing wiring, greatly improving field working efficiency.

Q2: What measuring objects is this instrument suitable for?

A2: It is designed to test capacitance of capacitor banks and inductance of reactors. It can also complete measurement of CVT, surge arresters and other power equipment.

Q3: What is the capacitance measuring range and accuracy?

A3: Capacitance range: 0.2μF ~ 2000μF. Accuracy: ±1% reading ±0.02μF (0.2~2μF); ±1% reading ±2 digits (2~2000μF). Inductance range:1mH~9.99H, accuracy ±1.5% reading ±2 digits.

Q4: What is the output test voltage of the tester?

A4: Output voltage: AC26V, 500VA, 50Hz. Higher output voltage ensures higher fault detection rate than ordinary low-voltage capacitance meters.

Q5: Does the machine support data storage and printing?

A5: Yes. It can store up to 7168 groups of test data. Built-in panel thermal printer supports on-site real-time report printing.

Q6: What is the power supply requirement?

A6: Standard power input: AC 220V±10%, 50Hz. Operating ambient temperature: 0~+40℃, relative humidity ≤90%.

Q7: Can it realize waveform display during testing?

A7: Yes. The large LCD screen supports simultaneous display of real-time waveforms and processed test data to make the measuring process intuitive.

Q8: Is automatic range switching available?

A8: Yes. Automatic range selection avoids manual operation errors and ensures stable and repeatable measuring results.

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