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IMP57 is a fundamental accessory for verifier and engineer to perform, connected with GSC5x, SIRIUS 89, Macrotest 5035, Genius 5080E or Combitest 2019, the Loop/Line impedance and the prospective short circuit current evaluation on a distribution circuit. The high value of test current generated (max 200A) allows quick and accurate measurement (0,1mOhm resolution) also close to power transformer. IMP57 consists in a practical and strong plastic suitcase, it haven't any display and can be connected by RS-232 to the above meters (called Master) to read the measurement results. With 4-wire measurement method the results aren't affected by test leads and it's no necessary perform any preliminary calibration.
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The ground resistance of substations can be measured with two auxiliary electrodes which are put into the ground. To avoid influences from the mains current and its harmonics, this measurement should preferably be carried out with 128 Hz.The high output power of the CPC 100 ensures a high ratio of the signal level to the noise level. Thanks to the signal processor technology, the measuring procedure is very selective and disturbances by ground currents are reduced to a minimum.
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AutoPoint DT is a fixtureless, gridless flying probe with a unique power-off impedance analysis measurement system. Excellent for Manufacturing Defect Analysis (MDA) testing and Field Return Failures.
Supplied as a Stand Alone System or integrated with the PinPoint II Advanced Diagnostic Test System System
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Earth Testing covers the testing of earth electrodes and the measurement of soil resistivity. The instrument requirements depend on the range of applications.
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DEHNcap Test Adapter/Measuring Impedance
* Easy mechanical and electrical adaptation to HR, LR or XC test sockets
* Measuring impedance for maintenance tests of coupling units with suitable µA meter
* 4 mm safety plugs or sockets
* Energised HR plug, insulated
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3731 Clamp-On Ground Resistance Testers
The Clamp-on Ground Resistance Tester Model 3731 measures ground rod and small grid resistance through any season, without the use of auxiliary ground rods.
Check Resistance on Single and Multiple Rods or Grids
Clamp-on Ground Resistance Testers are used in multi-grounded systems without disconnecting the ground under test. The Model 3731 simply clamps around the ground conductor or rod and measures the resistance to ground. By performing measurements on intact ground systems, the user also verifies the quality of the grounding connections and bonds. Resistance and continuity of grounding loops around pads and buildings may also be measured.
The Model 3731 also provides alarm and memory functions.
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Ground resistance meter 3-electrode measurement on the 3151 gives greater precision !
Ground resistance measurement involves factors that are not encountered during ordinary resistance measurement, such as polarization of the earth, the influence of grounding current due to leak current and grounding voltage, and the influence of auxiliary grounding resistance. The 3151 is able to make more accurate measurements more safely under difficult conditions because it uses the alternating current potentiometer method to provide measurement accuracy, and because it contains features such as an auxiliary grounding resistance check feature and measurement frequency switching.
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The DRM-100 instrument can precisely measure contact resistance on circuit breakers, switches, bus bar joints and other lowresistance devices in a high voltage environment.
Digital Resistance Meter Instrument Features
* Precise contact resistance measurement
* True DC current is automatically ramped up and down
* Test cycle programmable from 10-60 seconds
* Large, bright, high resolution, color screen
* Continuous mode for trouble shooting
* High accuracy and resolution
* Emergency OFF button and auxiliary grounding terminal for safety
* High strength and waterproof Instrument case for rough field use
* Test leads and accessories in separate carrying case
* Also available with internal memory, printer, USB port. Model DRR-100
* Color screen
* Auto ranging
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Digital Winding Resistance Reporter
Model DWR-10
The Digital Winding Resistance (DWR) REPORTER can measure and save more than 10,000 high-resolution test results along with transformer nameplate data. With its expansive memory, its bright 45/8" x 3½" LCD screen and the attractive reports from its 40-character wide built-in printer, the DWR is the new standard in test equipment for the Transmission and Distribution Industry. The DWR can store hundreds of files. Each file can contain a virtually unlimited number of winding resistance measurements with tap and winding details of each, and several fields of information about the transformer, its location and the operator's name.
DWR REPORTER Features
- A large, color LCD screen for entering equipment details and presenting results, in various languages
- An expansive memory capacity for test results
- A robust power supply for fast testing of large power transformers
- An 40-character-wide built-in printer
- Remote tap-changer operation
- Compatible with Microsoft Excel® and Microsoft Word®
The Digital Winding Resistance Reporter file manager makes it easy to locate, open, view and print past results. Files are conveniently named according to the transformer serial number (up to 99 duplicates are permitted using an automatic suffix). Files are easily transferred to PC (RS-232 and USB ports).
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QT25 uses a unique method to detect exact PCB short circuit locations and also pinpoint the shorted components/tracks. Ideally PCB tracks are suppose to have zero resistance, but in actual conditions they have small resistance. The exact location of the short is where the instrument reads the lowest value of resistance and this resistance could be detected with a sensitive instrument like QT25, even in power planes.
QT25 can also be used in measuring the contact resistance of switches and relays in its milli-ohm mode.
QT25 is designed to apply a drive voltage of less than 200 millivolts, while detecting shorts in the populated PCBs, so as to avoid turning on the semiconductor devices inside the circuit, which could lead to misleading results.
There is a composite '16 character alpha numeric backlit LCD display' to show the Resistance range selected, Offset indication, Resistance value, and also the Units.
1. 4 wire resistance measurement
2. Back-lit 16 character alpha numeric display
3. Complimenting modulated audio tone
4. Resistor range of 200 milliohms, 2 ohms and 200 ohms.100 micro ohm resolution in 200 milli ohm range
5. Auto offset capability upto 200 ohms
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1. Most useful in locating Vcc - Gnd shorts and track shorts in PCBs
2. 3U cPCI / PXI Platform for rugged Environment
3. Hot Swap (Live Insertion / removal)
4. 4 wire resistance measurement
5. Complimenting modulated audio tone
6. Resistor range of 200 milliohms, 2 ohms and 200 ohms.100 micro ohm resolution in 200 milli ohm range
7. Auto offset capability upto 200 ohms
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