Quartzteq has developed a range of sensors to acquire PD from motor or generator windings. Options are available for use in both safe area and Ex environments, also for machines where surge capacitors are fitted and at various voltages up to 34kV.
A coupling capacitor designed to acquire partial discharge (PD) signals from motor or generator windings with only one capacitor required per phase.
General Specifications | |
Max. Voltage | 7 kV (Phase-Ground, RMS) |
Tolerance | +/-20% |
Capacitance | 1100pC @ 50Hz/20°C |
Operation Temp. | -20°C to +85°C |
Mounting | 50x80mm with M4 allen key |
High Voltage | Integrated 60cm HV cable |
Ground | M5 |
Signal | BNC Female |
PD-Signal | Integrated quadrupole |
Synchronisation | divider1:1000 (+/-20%) |
Voltage Tests | |
1min @ 50Hz | 28 kVAC |
TE<5pC | 8 kV |
A coupling capacitor designed to acquire partial discharge (PD) signals from motor or generator windings with only one capacitor required per phase.
General Specifications | |
Max. Voltage | 10 kV (Phase-Ground, RMS) |
Tolerance | +/-10% |
Capacitance | 1300pF @ 50Hz/20°C |
Operation Temp. | -20°C to +85°C |
Mounting | Horizontal or vertical M6 Caphead Screws |
High Voltage | M12 caphead & HV connecting cable |
Ground | M6 |
Signal | BNC Female |
PD-Signal | Integrated quadrupole |
Synchronisation | divider1:1000 (+/-20%) |
Voltage Tests | |
1min @ 50Hz | 38 kVAC |
PDEV 10pC | >20 kVrms |
Suitable for machines rated up to 34kV
Partial discharge coupling capacitor
Only one capacitor required per phase
Suitable for use with LIFEVIEW LIVE, LIFEVIEW MOBILE or LIFEVIEW PDA
A coupling capacitor designed to acquire partial discharge (PD) signals from motor or generator windings with only one capacitor required per phase.
General Specifications | |
Max. Voltage | 20 kV (Phase-Ground, RMS) |
Tolerance | +/-20% |
Capacity | 1000pF @ 50Hz/20°C |
Operation Temp. | -20°C to +85°C |
Mounting | 100x125mm with M10 allen screws |
High Voltage | M12 |
Ground | M6 |
Signal | BNC Female |
PD-Signal | Integrated quadrupole |
Synchronisation | divider 1:1000 (+/-20%) |
Voltage Tests | |
1min@ 50Hz | 50 kVAC |
TE<5pC | 16 kV |
Ideal for machines with surge capacitors fitted
Wide-band current transformer
Suitable for use with LIFEVIEW LIVE, LIFEVIEW MOBILE or LIFEVIEW PDA
The QCT17 is installed on the ground wire of the surge capacitor. For this, the case of the surge capacitor has to be insulated from the ground, with just the ground wire connected to the main ground through the QCT17. The measurement is contact free, No galvanic connection to the high voltage terminals is made. The CT has an inner diameter of 17mm this allows standard earth wires (typically 16mm2) to be used. The maximum current of 25A before the CT goes into saturation makes the QCT17 the ideal PD sensor for practically all surge capacitor ranges.
General Specifications | |
Max. Voltage | Nominal in standard operating conditions |
Magnetic Saturation (Knee Point) | 25A AC 50/60Hz |
Tolerance | +/-10% |
Operation Temp. | -20°C to +85°C |
Protection | IP65 |
Dimension (LxBxW) | 64x58x34mm |
Diameter | 17mm |
Connection Cable | Coaxial BNC |
The QRC40 Rogowski Coil is designed to acquire high frequency current pulses generated by partial discharge and is an ideal sensor for installation around high voltage power cables and bushings that are less than 40mm in diameter.
Supplied with 20m coax cables for each phase (20m max. to ensure PD sensitivity is not affected) |
Fiitted by clamping around machine high voltage cables or bushings |
Coax cable can be terminated in a safe area or inside a suitably certified enclosure |
BNC connector must be mounted at the end of the cable in order to connect it to PD analyzer |
Ideally suited to machines with HV cables and bushings less than 40mm in diameter; no need to disconnect cables during installation |
Installed 1 per phase on the line terminals |
Available for both safe and hazardous areas. ATEX / IECEx / UKCA Certified |
Central aperture accomodates 40mm diameter cable or bushing |
The QRC85 Rogowski Coil is designed to acquire high frequency current pulses generated by partial discharge and is an ideal sensor for installation around high voltage power cables and bushings.
Supplied with 20m coax cables for each phase (20m max. to ensure PD sensitivity is not affected) |
Fiitted by clamping around machine high voltage cables or bushings; no need to disconnect cables during installation |
Coax cable can be terminated in a safe area or inside a suitably certified enclosure |
BNC connector must be mounted at the end of the cable in order to connect it to PD analyzer |
Ideally suited to machines with Euromold Terminals |
Installed 1 per phase on the line terminals |
Available for both safe and hazardous areas. ATEX / IECEx / UKCA Certified |
Central aperture accomodates 85mm diameter cable or bushing |
As part of the Quartzelec Group of engineering companies, a full service support can be provided for all Quartzteq products. From design and upgrades through to installation and testing. Read more about the full scope of Quartzelec’s service offering.