Partial Discharge Testing Accessories
Sensors and Couplers
Bushing tap adapters
Bushing tap adapters
Our bushing tap adapters connect sensors to transformer bushings (Micafil, ABB, etc.) with integrated surge protection, ensuring a safe, and stable signal acquisition during PD testing with our MPD 800.
MCC
MCC
Coupling capacitors
Our MCC series decouples PD signals from HV potential to perform PD tests with our MPD 800 on rotating machines and MV assets. These coupling capacitors provide a range of voltage levels and integration options to suit your specific testing environment.
See comparison table below.
MCT
MCT
High-frequency current transformers
Our MCT high-frequency current transformers (HFCT) are engineered for non-intrusive PD measurements on high-voltage and medium-voltage cables with our MPD 800.
MCT 085
MCT 085
HFCT for MV cable diagnostics
Our MCT high-frequency current transformers (HFCT) are engineered for non-intrusive PD measurements on high-voltage and medium-voltage cables.
MCT 120
MCT 120
HFCT for HV cable diagnostics
Our MCT 120 HFCT offers a split-core (clamp-on) design that enables rapid deployment on HV cable systems. Its primary advantage is its ability to install the sensor around ground leads without disconnecting them.
See comparison table below.
TEV1
TEV1
Transient earth voltage sensor
Our TEV sensor is a magnetic, non-invasive sensor for detecting transient earth voltages in switchgear and oil-filled power transformer tanks.
UHF sensors
UHF sensors
Signal measurement in the UHF range
Our UHF sensors are used with our UHF 800 and are designed to bypass external noise by measuring signals in the Ultra-High Frequency (UHF) range. Our UVS 610 and UHT1 are intended for use on oil-filled transformers, while our UCS1 sensor is intended for use in earthed cable termination enclosures.
UCS1
UCS1
UHF power cable sensor
Our UCS1 detects high-frequency pulses in cable grounding systems to bypass external interference.
UHT1
UHT1
Hatch-type UHF sensor
Our UHT1 provides you with a permanent oil-tight window for UHF PD detection in power transformer tanks.
UVS 610
UVS 610
UHF drain valve sensor
Our UVS 610 is a probe-style sensor for internal transformer PD measurements via oil valves.
See comparison table below.
Bushing tap adapters
Our bushing tap adapters connect sensors to transformer bushings (Micafil, ABB, etc.) with integrated surge protection, ensuring a safe, and stable signal acquisition during PD testing with our MPD 800.
MCC
Coupling capacitors
Our MCC series decouples PD signals from HV potential to perform PD tests with our MPD 800 on rotating machines and MV assets. These coupling capacitors provide a range of voltage levels and integration options to suit your specific testing environment.
See comparison table below.
MCT 085
HFCT for MV cable diagnostics
Our MCT high-frequency current transformers (HFCT) are engineered for non-intrusive PD measurements on high-voltage and medium-voltage cables.
MCT 120
HFCT for HV cable diagnostics
Our MCT 120 HFCT offers a split-core (clamp-on) design that enables rapid deployment on HV cable systems. Its primary advantage is its ability to install the sensor around ground leads without disconnecting them.
See comparison table below.
TEV1
Transient earth voltage sensor
Our TEV sensor is a magnetic, non-invasive sensor for detecting transient earth voltages in switchgear and oil-filled power transformer tanks.
UCS1
UHF power cable sensor
Our UCS1 detects high-frequency pulses in cable grounding systems to bypass external interference.
UHT1
Hatch-type UHF sensor
Our UHT1 provides you with a permanent oil-tight window for UHF PD detection in power transformer tanks.
UVS 610
UHF drain valve sensor
Our UVS 610 is a probe-style sensor for internal transformer PD measurements via oil valves.
See comparison table below.
MCC Coupling Capacitor Comparison
| Model | Highest Voltage | Capacitance | Primary Application | Features |
| MCC 112 | 12 kV | 1 nF | Generators / MV assets / Permanent installation | Compact, direct connection |
| MCC 117 | 17.5 kV | 2 nF | Generators / MV assets / Permanent installation | High capacitance in small body; optimized for monitoring |
| MCC 124 | 24 kV | 1 nF | Generators / MV assets / Permanent installation | Optimized for monitoring |
| MCC 210-L | 100 kV | 1 nF | HV Labs / Mobile testing | Portable stand |
MCT HFCT Comparison
| Specification | MCT 085 | MCT 120 |
| Core Design | Solid (Ferrite Ring) | Split-core (separable) and closed-core (solid ring) versions available |
| Frequency Range | 65 kHz – 30 MHz | 80 kHz – 40 MHz |
| Inner Diameter | ø ~ 28.5 mm / 1.12 in | ø ~ 53.5 mm / 2.1 in ~ |
| Primary Application | MV cable diagnostics | HV cable diagnostics / Grounding for power transformer diagnostics |
| Installation | Permanent installation requires temporary opening of grounding | Clamp directly around the connection |
UHF Sensor Comparison
| Model | Mounting Method | Asset Type | Key Benefit |
| UVS 610 | Oil Drain Valve (DN 50/80) | Power transformers | Excellent noise immunity via internal probe |
| UHT1 | Permanent Hatch/Window | Power transformers | Excellent noise immunity via internal probe |
| UCS1 | Surface/Ground System | HV power cables | Excellent noise immunity via UHF range |
Coupling Device and Balanced Bridge
CPL1/CPL2
CPL1/CPL2
External quadripoles
Our CPL1/CPL2 external quadripoles are essential measurement impedances for handling high reactive currents during PD testing with our MPD 800. The CPL2 also features a signal splitter.
MBB1
MBB1
Measurement balanced bridge
Our MBB1 cancels external noise in high-interference environments via differential PD tests with our MPD 800.
CPL1/CPL2
External quadripoles
Our CPL1/CPL2 external quadripoles are essential measurement impedances for handling high reactive currents during PD testing with our MPD 800. The CPL2 also features a signal splitter.
MBB1
Measurement balanced bridge
Our MBB1 cancels external noise in high-interference environments via differential PD tests with our MPD 800.
Calibration and Verification
CAL 542
RIV1
RIV1
Radio influence voltage calibrator
Our RIV1 calibrator is a specialized voltage injector for Radio Influence Voltage PD testing per NEMA and CISPR standards with our MPD 800.
UPG 620
UPG 620
UHF pulse generator
Our UPG 620 is a high-speed (200 ps rise time) pulse generator for verifying UHF circuit sensitivity per CIGRE. It is used with our UHF 800 and PARADIMO 100 solutions.
RIV1
Radio influence voltage calibrator
Our RIV1 calibrator is a specialized voltage injector for Radio Influence Voltage PD testing per NEMA and CISPR standards with our MPD 800.
UPG 620
UHF pulse generator
Our UPG 620 is a high-speed (200 ps rise time) pulse generator for verifying UHF circuit sensitivity per CIGRE. It is used with our UHF 800 and PARADIMO 100 solutions.
Connectivity and Power
MCU2
MCU2
Control unit
Our MCU2 control unit converts fiber optic signals from multiple MPD 800 and UHF 800 acquisition units to USB for a safe, isolated PC connection.
OMICRON Terminal Box (OTB)
OMICRON Terminal Box (OTB)
The secure interface for plug-and-play PD measurements and monitoring
Our OTB (OMICRON Terminal Box) provides a safe, robust, and central connection point between permanently installed PD sensors and measurement devices for diagnostic “spot-check” PD measurements and PD monitoring.
RBP1
RBP1
Rechargeable battery
Our RBP1 is a high-capacity Li-ion rechargeable battery providing up to 16 hours of cordless, low-noise operation with our MPD 800 and UHF 800.
MCU2
Control unit
Our MCU2 control unit converts fiber optic signals from multiple MPD 800 and UHF 800 acquisition units to USB for a safe, isolated PC connection.
OMICRON Terminal Box (OTB)
The secure interface for plug-and-play PD measurements and monitoring
Our OTB (OMICRON Terminal Box) provides a safe, robust, and central connection point between permanently installed PD sensors and measurement devices for diagnostic “spot-check” PD measurements and PD monitoring.
RBP1
Rechargeable battery
Our RBP1 is a high-capacity Li-ion rechargeable battery providing up to 16 hours of cordless, low-noise operation with our MPD 800 and UHF 800.
Transport and Outdoor Testing
MPC1
MPC1
Measurement protection case for outdoor testing
Our rugged, IP-rated MPC1 transport case enables fast setup for outdoor PD testing. It integrates MPD 800 systems and accessories into a portable, field-ready solution, providing several configuration options for flexible usage.
MTC1
MTC1
Transport case for general use
Our MTC1 is a universal transport case. It can, for example, contain up to 5 MPD 800 units, one UHF 800 unit, one RIV unit, one IEC calibrator, an MCU2 controller, and RBP1 batteries. Alternatively, it can include a 3-unit MPD 800 system, 3 CPLs, one UHF 800, a controller, two calibrators (IEC, RIV) and RBP1 batteries.
MTC2
MTC2
Flight case
Our MTC2 is a protected flight case. It can contain up to 3 MPD 800 units, one UHF 800 unit, one calibrator, one MCU2 controller, and RBP1 batteries.
MPC1
Measurement protection case for outdoor testing
Our rugged, IP-rated MPC1 transport case enables fast setup for outdoor PD testing. It integrates MPD 800 systems and accessories into a portable, field-ready solution, providing several configuration options for flexible usage.
MTC1
Transport case for general use
Our MTC1 is a universal transport case. It can, for example, contain up to 5 MPD 800 units, one UHF 800 unit, one RIV unit, one IEC calibrator, an MCU2 controller, and RBP1 batteries. Alternatively, it can include a 3-unit MPD 800 system, 3 CPLs, one UHF 800, a controller, two calibrators (IEC, RIV) and RBP1 batteries.
MTC2
Flight case
Our MTC2 is a protected flight case. It can contain up to 3 MPD 800 units, one UHF 800 unit, one calibrator, one MCU2 controller, and RBP1 batteries.
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