PD Accessories

Maximize benefits of PD test instruments

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IN-SERVICE TESTING & ASSESSMENT
PD Accessories

Whether you need a sensor, measuring impedance, coupling capacitor or calibrator, we offer a complete line of Doble partial discharge testing accessories to help refine your PD testing capabilities.

With many possible applications for PD testing, accessories can help maximize the benefit of your PD test instruments

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    LDC-5 Calibrator

      LDC-5 Calibrator

    • For PD-Smart and LDS-6
    • For external calibration of the standard PD measuring circuit according to IEC 60270
    • Quantifying of the main PD quantity “apparent charge”
    • Output for calibrating pulse charges: 5, 20, 100, 500 pC
    LDC-7_UHF

      LDC-7/UHF

    • For PD-Smart
    • Pulse generator for sensitivity verification of PD measuring circuits operating in the UHF/VHF domain
     LDC-5/D Calibrator

      LDC-5/D

    • For LDS-6
    • Double impulse calibrator
    • For external calibration of the standard PD measuring circuit according to IEC 60270 (single pulses)
    • PD measurements on long cables and in accordance with standards requiring the verification of the double pulse behavior of the employed PD measuring system
    • Produces these standardized time parameters according to the IEC 855-3
    • Output for calibrating pulse charges (5, 20, 100, 500 pC)
    LDC-5_RIV

      LDC-5/RIV

    • For LDS-6
    • External RIV calibrator for standardized PD measuring circuit according to IEC 60270
    • Quantifies “apparent charge”
    • Magnitude of the calibrating pulses can be selected by the “Charge Magnitude” switch
    LDC-5_S2

      LDC-5/S2

    • For LDS-6
    • Charge injector designed for simulation of PD pulses, especially for on-site PD testing
    • Generates five different charge magnitudes, which appear at the 5 BNC-jacks
    • Calibrating charge can be fed into the terminals of test sample (according to IEC 60270 and DIN VDE 0434)

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    PDDC17-PD_COUPLER

    PDDC-17 PD Decoupler

    • For use with rotating machines
    • Designed for PD signal transmission with a bandwidth above 30 MHz at 50 Ohm matching resistance
    • PD decoupling unit with integrated PD measuring impedance for decoupling of PD pulses from the standard PD measuring circuit according to IEC 60270
    • Voltage signal for phase resolved measurements
    • Composite PD and voltage signal, additive superimposed
    PDDC24-FAILSAFEPD_COUPLER

    PDDC-24—Failsafe & LF Coupler

    For use with rotating machines.
    • Designed for PD signal transmission with a bandwidth above 30 MHz at 50 Ohm matching resistance. It also transmits test voltage signals at the same wire.
    • PD decoupling unit with integrated PD measuring impedance for decoupling of PD pulses from the standard PD measuring circuit acc. to IEC 60270
    • Voltage signal for phase resolved measurements
    • Composite PD and voltage signal, additive superimposed
    • Integrated high-voltage fuse
    BC Matching Unit

    BC Matching Unit

    • For use with rotating machines
    • Works with your previously installed couplers for PD testing in rotating machines
    • Designed to adapt conventional PD measuring methods to the 80pF-Line coupler
    • Improves signals from existing couplers
    • Avoids outages that would be needed to replace high frequency couplers with low frequency couplers
     LDM-5_SP1_Splitting_Box

    LDM-5 /SP1

    • For use with PDDC-range in combination with PD-Smart or LDS-6
    • Splitting box designed for PD/TV-signal transmission
    • Compact device with all input- and output-lines at the sides
    • Includes fast overvoltage protection to help prevent dangerous overvoltage due to unexpected breakdown of the test sample
    CONNECTION_BOX

    Connection Boxes

    • For use with LDM-5/U5
    • Connection Boxes are designed for PD/TV-signal transmission and diplexing
    • Two and three channel connection box options
    Directional Antenna 290mm

    Directional Antenna DA100

    • For use with PD and RFI Surveyors
    • Provides more specific location of Radio Frequency Interference (RFI) and Partial Discharge (PD) sources.
    • Can be handheld or mounted on tripod
    • Bandwidth 250 MHz – 1 GHz
    • Diameter: 290 mm
     

    HFCT sensor

    • For use at cable terminations
    • Clip-on
    • 10 kHz – 200 MHz
     HFCT300sensor 2207403000002

    HFCT-300 sensor

    • For use at cable terminations
    • Hand-held split-core sensor specially designed for coupling out high frequency PD-signals
    • Applicable for PD tests on any part of the PD signal loop between the insulation electrodes where the outgoing and incoming signals do not cancel each other out
    • For highly sensitive PD measurements with superposed line currents or high reactive currents (50/60 Hz) which can reach up to 300 A
     LDWS-T_PD_SENSOR

    LDWS-T Sensor

    • For use at HV cable terminations
    • For decoupling of PD signals (TNC-socket)
    • High impedance version
    • For ungrounded and grounded devices
     UHF DV sensor_DN5080 TN80322

    UHF Drain Valve Sensor DN50/DN80

    • For use with HV Transformers
    • Designed for decoupling of electromagnetic PD signals from inside of transformers
    • Sensor fits into DN 50 or DN 80 drain valves
    • Supports “Performance/Sensitivity Check” where high frequency test pulses can be injected with further integrated electrodes
    • Grounded sensors (for low frequencies)
     UHF_PLATE_SENSOR

    UHF PD Plate Sensor

    • For use with HV Transformers
    • Used for the decoupling of electromagnetic UHF PD signals from the inside of the transformer tank
    • Designed to retrofit transformers that do not have oil flanges with free internal tubes
    • Can be installed on new transformers during manufacturing
    • Used for testing and optimizing mechanical properties such as oil-tightness, thermal withstanding of changing temperatures and pressure withstanding
       
    TEVProbe TN80310

    TEV-Probe

    • For use in GIS
    • Capacitive sensor for metalclad switchgear
    • Connects to PDS100/PDS200/DFA300 and PD-Smart
     GIS spacer sensor

    UHF Spacer Sensor

    • For use in GIS
    • Antenna for polymeric spacers or glass inspection windows
    • The sensor can be placed across a joint on a GIS to find evidence of partial discharge inside
     30dB UHF Sensor Pre-Amplifier

    Sensor Pre-Amplifier

    • For use with all kind of UHF sensors
    • High sensitivity and high gain sensor amplifier
    • Special protection circuitry protects the input against excessive input power
    • Integrated soft start reduces the maximum peak current when powering up

  • LDM-5_U5

    LDM-5/U5

    • For cable and transformer testing
    • General use measuring impedance designed for the decoupling of the PD current pulses on the PD coupling capacitor, changing in equivalent voltage pulses and forwarding to the PD detector (according to IEC 60270)
    • Voltage signal for phase-resolved measurements by an internal low voltage capacitor for measuring test voltage and forwarding to PD test equipment
    • Output for test voltage value, derived from the coupling capacitor
    • No additional HV divider capacitor is necessary
    • With up to 2 switches for maximum 4 different coupling capacitances

    LDF-6/FU

    • To be used with LDM-5/U5
    • Band pass filter designed to improve electromagnetic compatibility in the measuring surroundings
    • Reduction of the disturbing influence of high frequency currents
    • Use between a measuring impedance and PD device

     

    LDM-5U_RIV

    LDM-5/U5 RIV

    • For transformer testing
    • Designed for the decoupling of the PD current pulses on the PD coupling capacitor, changing in equivalent voltage pulses and forwarding to the PD detector (according to IEC 60270)
    • Connects to a bushing tap or a coupling capacitor
    • Low voltage capacitor for measuring test voltage and forwarding to PD test equipment
    • Voltage signal for phase-resolved measurements
    • Output for test voltage value, derived from the coupling capacitor
    • No additional HV divider capacitor is necessary
    CC1000-60

    Coupling Capacitors

    • To be used with LDM-5/U5
    • The coupling capacitor connects the high voltage with the PD-measuring device
    • Mobile and equipped with the suitable security procedures
    • Capacitance 1 nF
      • CC1000/60: Rated Voltage 60 kV
      • CC1000/120: Rated Voltage 120 kV
    • Capacitance 10 nF
      • CC10000/50: Rated Voltage 50 kV
    LDM-6_3

    LDM-6/3

    • To be used with Coupling Capacitors
    • Designed for the decoupling of the PD current pulses on the PD coupling capacitor, changing in equivalent voltage pulses and forwarding to the PD detector (according to IEC 60270)
    • Voltage signal for phase-resolved measurements by an internal low voltage capacitor for measuring test voltage and forwarding to PD test equipment
    • Voltages decoupled from the bushing tap together with the PD signal
    • One signal output (TNC-socket) for voltage signal with added PD signal
    LDM-5_M6

    LDM-5/M8 Switching Box

    • For use with specially designed LDS-6 control software
    • Signal switch, specially designed for PD applications
    • Stores all measured PD data for each channel separately (8 measuring files)
    • Can customize a test procedure (test time, sequence of activation of the measuring impedances)

IN-SERVICE TESTING & ASSESSMENT

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PDS100

Partial Discharge Surveyor

PDS200

PD Surveyor with EMI Capabilities

EMI Surveyor

For Rotating Machine & Power Plant Applications

DFA100

Dielectric Fault Analyzer

DFA300

RFI & Acoustic Signal Surveyor

DFA500

RFI & Acoustic Signal Analyzer

DOMINO USS

Portable Moisture in Oil and Dewpoint Analyzer

PD-SMART

Partial Discharge Analyzer

LDS-6

Partial Discharge Measuring System

LCM500

Leakage Current Monitor

PD Accessories

Maximize benefits of PD test instruments

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