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CT 17 Partial Discharge Current Transformer


Manufacturer: Qualitrol show products

The CT17 wide-band current transformer is designed to acquire partial discharge (PD) pulses from generator or motor windings with installed Surge Capacitors. The CT17 has to be installed on the ground wire of the surge capacitor. For this, the case of surge capacitor has to be insulated from the ground, that just the ground wire is connected to the main ground. The measurement is contact free. No galvanic connection to the high voltage terminals is made.

Description

The CT17 wide-band current transformer is designed to acquire partial discharge (PD) pulses from generator or motor windings with installed Surge Capacitors. The CT17 has to be installed on the ground wire of the surge capacitor. For this, the case of surge capacitor has to be insulated from the ground, that just the ground wire is connected to the main ground. The measurement is contact free. No galvanic connection to the high voltage terminals is made.

Features

The CT has a inner diameter of 17mm this  allows to use the standard ground wires of typically 16mm2. The maximum current of 25A before the CT goes into the saturation makes the CT17 to the ideal PD Sensor for practically all surge capacitor ranges.

FREQUENCY BAND
The CT17 has a response which is optimised with respect to the useful frequency band in motors and generators (100kHz-20MHz).

General

Voltage tests
Saturation >22A @50/60Hz Connection Coaxial BNC
Diameter 17mm Tolerance +/-10%
Dimension(L*B*W) 64*58*34mm Max Voltage Depends on application
Protection IP65 Operation Temp  -20 C to +85 C

Applications

  • The CT17 wide-band current transformer is designed to acquire partial discharge (PD) pulses from generator or motor windings with installed Surge Capacitors.
  • The CT17 has to be installed on the ground wire of the surge capacitor. For this, the case of surge capacitor has to be insulated from the ground, that just the ground wire is connected to the main ground. The measurement is contact free. No galvanic connection to the high voltage terminals is made.