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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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Multi-purpose coupling unit for CPC 100
CP CU1 is a coupling-unit designated for measurements with the CPC 100 test system on overhead lines and power cables. Typical applications of this world-wide unique system include: Line impedances and k-factors of overhead lines or power cables, Mutual coupling of parallel lines, Coupling of power lines into signal cables,
Ground impedances of large substations, Step and touch voltages.
The test system offered by OMICRON makes use of frequency shift techniques for accurate measurements regardless of electrical interference.
Applications
- Line impedance and residual compensation factor (k-factor) measurements
- Positive and zero sequence impedance measurements of power lines
- Measurement of mutual coupling of parallel lines
- Measurement of ground impedances of large substations
- Step and touch voltage measurements
- Measurement of coupling impedances between power lines and signal cables
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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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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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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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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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PART # SBS BCT-5000
DC RESISTIVE LOAD BANK (24, 48, & 120 VDC)
The only way to know your industrial batteries will perform to specification is to test them regularly. SBS's battery capacity testers enable you to test your wet or sealed batteries in a variety of ways and at three voltages. Load bank test 24V, 48V, or 120V DC systems with currents up to 171 amps. A built-in digital meter lets you read volts, amps, amp-hours, and elapsed time without having to hook up a separate meter. The display is accurate to 1% of full scale at the rated voltages. The unit also offers continuous operation, so there's no cool down needed after or between tests. Use the master load control switch to instantly apply or remove loads.
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Now in its fourth generation, the Loom Laser series Thread-Break Detection system uses cutting-edge laser and microprocessor technology to provide protection from thread breaks in any weaving environment.
Thread breaks are detected when the CPU senses small changes in the light received by the photocell (receiver). The system is programmed to differentiate between actual thread breaks and false signals generated, for example, when a dust particle or an insect passes through the beam.
Lasers can be strategically placed at critical points-the whiproll, back shed, front shed, or on the lay-to give complete thread-break coverage.
The advanced capabilities of the LL-2000 Loom Laser can detect threads as small as 30 microns on looms operating between 120 and 600 rpm. At the same time, the system is immune to changes in ambient light, and can withstand vibrations up to 14mm in amplitude at the surface of the receiver sensor.
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The OBR 4400 takes the industry's first ultra-high resolution OTDR with backscatter-level sensitivity designed for component- and module-level reflectometry to the next level. With a small, easily transportable platform, the capability to "see" reflections out to 2 kilometers with no dead zone, and integrated temperature and strain sensing, the OBR 4400 gives you the ultimate in fiber diagnostics. The OBR 4400 uses swept-wavelength coherent interferometry to measure minute reflections (< 0.0003 parts per billion) in an optical system as a function of length with spatial resolution less than 50 microns. This provides the user with precision reflectometry and unprecedented optical-module inspection and diagnostic capabilities by providing the ability to locate and troubleshoot splices, connectors, fiber bends and breaks, insertion loss points, track polarization, verify PM components and more.
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Up to 24 channels of Return Loss Measurement. The high resolution reflectometer measures Return Loss from 10dB to 72dB.
The OP930 supports a CW source mode. For the Return Loss measurement the laser sources are pulsed in the nanosecond region. For certain measurements a continuous modulated (CW) light signal is a required.
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Two FasTesT ports: a three-wavelength singlemode port, including either 1625 nm or 1490 nm, and an optional two-wavelength multimode port, for a total of up to five wavelengths
Visual IL and ORL pass/fail analysis
Compatible with both the FTB-400 and FTB-200 platforms
FTTx ready: allows for the testing of passive optical networks (PONs) at 1310 nm, 1490 nm and 1550 nm, the three wavelengths recommended by the ITU-T (G.983.3) for PONs
Three-year warranty and recommended calibration interval, error-free testing and minimized training time
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Luna Technologies' Optical Backscatter Reflectometer (OBR) delivers unprecedented inspection and diagnostic capabilities for the fiber-optics industry. Luna's state-of-the-art OBR provides isolation of faults and problems well before final test, saving hours in rework and hard dollars in yield loss.
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Insertion Loss and Return Loss measurement for all four FTTX wavelengths. The 'no mandrel' method combined with concurrent dual-wavelength measurement makes this instrument the most efficient tool in FTTX component verification.
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The ultimate platform for network experts. Combines physical, optical, transport and datacom testing in a single box. Perform simultaneous acquisitions and fast data post-processing, and benefit from a scalable range of test applications and field-interchangeable modules.
Key Features and Benefits
Five configurations (two-slot, four-slot, seven-slot, eight-slot and bus protector), providing maximum flexibility for long-haul, metro, DWDM, high-fiber-count, Ethernet, SONET/SDH or DSn/PDH test applications
Pentium-powered, with up to 512 MB memory
Easy-to-read, high-resolution 12.1 inch TFT screen
Windows® operating system
Simultaneous acquisitions and fast data post-processing
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