Quartzteq GmbH
Bahnhofstrasse 3
CH – 5436 Würenlos
Switzerland
Partial Discharge
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.
QCC12 (up to 12kV)
- Suitable for machines rated up to 12kV
- 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 | 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 |
1nF Capacitance
In built 1000:1 Voltage Divider
For use in safe areas only
Installed 1 per phase on the line terminals
QCC17 (up to 17kV)
- Suitable for machines rated up to 17kV
- 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 | 10 kV (Phase-Ground, RMS) |
| Tolerance | +/-10% |
| Capacitance | 1300pC @ 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 |
1.3nF Capacitance
In built 1:1000 Voltage Divider
For use in safe areas only
Installed 1 per phase on the line terminals
QCC34 (up to 34kV)
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Suitable for machines rated up to 34kV
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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 |
1nF Capacitance
In built 1000:1 Voltage Divider
For use in safe areas only
Installed 1 per phase on the line terminals
QCT17 (surge capacitors fitted)
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Ideal for machines with surge capacitors fitted
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Wide-band current transformer
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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 |
Installed 1 per phase on the surge capacitor earth cable
17mm diameter hole
Optimised with respect to the useful frequency band in motors and generators (100kHZ - 20MHz).
Available for safe areas
QRC40 (Ex applications)
- Suitable for Ex applications (Ex eb IIC T5 Gb, Tamb -20°C or -30°C to +85°C)
- Hinged casing facilitates installation
- A Rogowski Coil sensor
- Suitable for use with LIFEVIEW LIVE, LIFEVIEW MOBILE or LIFEVIEW PDA II
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 |
Ideally suited to machines with Euromold cables and bushings less than 40mm in diameter
Available for both safe and hazardous areas
Installed 1 per phase on the line terminals
Central aperture accomodates 40mm diameter cable or bushing
QRC85 (Ex applications)
- Suitable for Ex applications (Ex eb IIC T5 Gb, Tamb -20°C or -30°C to +85°C)
- Hinged casing facilitates installation
- A Rogowski Coil sensor
- Suitable for use with LIFEVIEW LIVE, LIFEVIEW MOBILE or LIFEVIEW PDA
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 |
Ideally suited to machines with Euromold Terminals
Available for both safe and hazardous areas
The QRC clamps around cables and bushings; no need to disconnect cables during installation
Installed 1 per phase on the line terminals
Central aperture accomodates 85mm diameter cable or bushing
Applications