PD3U
Enables PD measurements even with large background noise
Spectrum Analyzer, Partial Discharge Detector, and RIV Meter
Its benefits include frequency spectrum analysis, 4-channel measurement capability, and center frequency adjustable from 10 kHz – 10 MHz in 10 kHz steps.
- Compact design
- Easy to use
- Precise results
- Stand-alone or computer operated
- Frequency spectrum analysis
- 4-channel measurement capability
- Center frequency is adjustable from 10 kHz – 10 MHz in 10 kHz steps
OVERVIEW
Partial Discharge Measuring
- The model PD3U comprises a Spectrum Analyzer, a PD detector, and a RIV meter in one instrument. This combination enables PD measurements even with a large background noise, such as in non-shielded test areas. Observing the frequency spectrum of a significantly noisy PD signal allows the user to select frequency bands with less disturbance resulting in a clearer pattern acquisition.
- In RIV mode, the instrument has bandwidth of 9 kHz and 270 kHz. When utilizing either the CAL3B or CAL3D calibrator, the range is 400 kHz – 1900 kHz in steps of 100 kHz. Technically, the 4 Channel unit in RIV mode, is a selective µV-meter according to the CISPR weighing curve whereas the repetition rate has a strong impact on the reading.
- Measurements are according to IEC 60270-2000, IEEEC57.12.90, and RIV measurements are according to NEMA/CISPR regulations and other relevant standards.
Testing Applications
- Condition evaluation of insulation systems
- Quality assurance testing in manufacturing plants
- Routine testing in a variety of applications
MODES
DESIGN FEATURES
Desktop Acquisition and Display Unit
- Spectrum, Scope and Meter display
- Selectable bandwidth 9 kHz and 270 kHz
- Center frequency is adjustable from 10 kHz – 10 MHz in 10 kHz steps
- MUX4 Multiplexer 4-channel measurement
- Internal (line 50/60 Hz) and external synchronization (10-500 Hz)
- Auto-range function
- Backlit LCD 240 x 128 dots
- RIV and PD calibration
- RIV reference input
- Automatic storage of current settings
- Universal serial interface (USB, up to 921 kB)
- AMP IN and REF IN connector
- REC OUT
Built-in Voltage Measurement
- Measures the voltages at the external sync input terminal
- Display of peak; peak/√2, and RMS value
- Input range 100 Vrms
- Input impedance: 1 MΩ
Built-in TTL Gating
- Triggered Noise Cancellation
- Software controlled gating from a signal connected to an auxiliary input
- Gating threshold may be set manually or automatically
- Includes the built-in logarithmic preamplifier RPA6
SPECIFICATIONS
Acquisition Unit
| Input | 100-240 VAC, 50/60 Hz |
| Power | 25 VA |
| Temperature Range | 10°C – 40°C |
| Dimensions | 9 ³/8” (236 mm) W |
| 11½” (295 mm) D | |
| 5¼” (133 mm) H | |
| Weight | 7 lbs. (3 kgs) |
Reference Voltage Input
| Input Impedance | 100 MΩ / 200 pF |
| Input Voltage | Max. 120 V (rms) |
| Frequency | 10-500 Hz |
Partial Discharge Signals
| Coupling | AC |
| Input Impedance | 50 Ω (without RPA) |
OPTIONS & ACCESSORIES
Options
Rack Mounting Kit
- 19”, 3RU for mounting into a control console
PD3U Software
- Standard Data Acquisition & Control Package
- Virtual Instrument to remote control the PD3U and to record data vs. time and vs. voltage
- 3-D Phase Resolved PD Pattern Acquisition, including ActiveX driver
- Supports fast USB communication
- 12 month free software updates via Web Site
Active-X Driver (Access to the Com port for use with PHENIX software or 3rd party software)
Accessories for Additional RIV Measurements
RIV Quadrupole Model CIT4M/v2u0/RIV (1 required per channel)
Measuring Impedance for PD, RIV NEMA and CISPR use
- Built-in voltage divider
- Coupling isolation transformer
- Ck: 600 pF to 2.5 nF
- Imax []800 mA
- Cd = 2 uf (Umax 100 Vrms)
- Switchable (150 Ω / 300 Ω)
RIV Calibrator
| Model | CAL3B | CAL3D |
| Frequency | 400 kHz to 1.9 MHz | 400 kHz to 1.9 MHz |
| Range | 10 µV to 10 mV | 10 µV to 10 mV (into 300 Ω) |
| Injection Capacitance | V (50 Ω) | V (>20 KΩ) |
| Use | NEMA 107 compliant | CISPR 18-2 compliant |
Additional Specs: 50 Hz or 60 Hz light synchronization, BNC connection
RESOURCES
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