Resistance Capacitance Inductance Tester
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The Capacitance Inductance Tester is a special instrument for testing compensation capacitors without disconnecting lines. The instrument outputs up to 20A test current, and the capacitance can be measured up to 2200μF. The instrument has anti-interference capability and can be used in strong electrical interference environments on site.
Technical Specifications
2.1 Capacitance Measurement
Measurement Range: 0.2μF～2200μF (Basic range 2μF～2200μF)
Accuracy: ±(Reading×1.5%+0.02μF)
Minimum Resolution: 0.001μF (4-digit display)
2.2 Inductance Measurement
Measurement Range: 0.2mH～50H (Basic range 2mH-10H)
Accuracy: ±(Reading×2%+2 digits)
Minimum Resolution: 0.001mH (4-digit display)
2.3 Automatic Capacitance Inductance Comprehensive Tester / Capacitance Inductance Meter / Inductance Tester Resistance Measurement
Measurement Range: 0.1Ω～12.5kΩ (Basic range 0.1Ω～1kΩ)
Accuracy: ±(Reading×1%+2 digits)
Minimum Resolution: 0.001Ω (4-digit display)
2.4 Automatic Capacitance Inductance Comprehensive Tester / Capacitance Inductance Meter / Inductance Tester Current Measurement
Measurement Range: 0~200mA~2A~20A-100A (Basic range 200mA~100A)
Accuracy: ±(Reading×1%+2 digits)
2.5 Power Supply and Test Power Source
Instrument Power Supply: AC 220V±10% 50Hz
Instrument Test Power Source: AC 25V±10%/20A 50Hz
AC 2V±10%/20A 50Hz
2.6 Working Conditions
Ambient Temperature: -10℃～40℃
Relative Humidity: ≤90%
2.7 Output Mode: Large screen LCD display with full Chinese output
Working Principle
The transformer outputs 20V or 2V test voltage, which is connected to the two busbars of the capacitor bank through test leads. The busbar voltage is then introduced into the internal voltage detection circuit of the instrument through test leads. After being converted into digital signals by the A/D converter, the signals are sent to the CPU through isolation devices. The current of the capacitor under test Cx is sampled by a clamp-type CT and after program-controlled amplification, it is converted into digital signals by the A/D converter and sent to the CPU. The CPU processes the received digital signals and obtains the voltage U and capacitor current Ic, then calculates the capacitance according to: Cx=Ic/ωU, where ω=2πf, and f is the frequency.
Structure Description
1 is the current input — the current signal input terminal. The test current signal cable plugs into the "current input" input plug, and the other end connects to the clamp meter.
2 is the 25V/20A AC output terminal. One end of the test voltage cable connects to the "voltage output" terminal, and the cable clamps at the other end clamp onto the connecting busbars of the two poles of the capacitor bank under test; 3 is the 2V/20A AC output terminal. When testing reactors less than 5mH or resistors less than 1.25Ω, connect to the 2V voltage output terminal. For capacitor testing, directly use the 20V voltage;
Printer — prints test results, using 58mm wide thermal paper. When replacing paper, open the paper compartment cover of the printer, insert the paper roll and leave a small part outside, then close the cover;
Power Socket — connects to 220V mains. This socket contains a fuse. This instrument should be installed with a 5A fuse tube;
Keyboard — "↓" key moves the cursor down, or decreases the number when modifying digits;
"↑" key moves the cursor up, or increases the number when modifying digits;
"→" key moves the cursor to the right;
"Print" key presses this key to print test results;
"OK" key presses this key to confirm the operation;
"Reset" key presses this key to return to the previous menu;
Grounding Terminal — during operation, this terminal must be reliably grounded;
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
