Hi-Tech Corporation

The WRM-10P S2 is Vanguard's second generation lightweight winding resistance meter designed to accurately measure the winding resistance of highly inductive power transformers. The unit’s dual resistance-reading input channels can measure two winding resistances simultaneously, and four-wire (Kelvin) connections provide high accuracy and require no lead compensation. The WRM-10P S2 provides stable resistance readings of very large transformers by utilizing a 36Vdc power supply capable of outputting up to 10 Amperes. The resistance reading of a 100MVA transformer can be achieved in 5 minutes or less. The unit’s power supply is cooled by heavy-duty fans designed for continuous operation. For greater flexibility in the field, the WRM-10P S2 comes with a built-in 2.5" wide thermal printer used for printing test reports. 

MI 3242 MicroOhm 2A is a portable low resistance ohmmeter used to measure low resistances of switches, relays, connectors, bus bars, power distribution cable joints, motor & generator winding, power transformers, power inductors, rail track joints, wire and cable resistance, welding joints for industrial application, etc., with test current up to 2A

MEASURING FUNCTIONS

• Bidirectional resistance measurement from 1 µΩ up to 199,9 Ω with test current up to 2 A

KEY FEATURES

• High overvoltage protection (CAT III / 600 V) allows measurement in substations and other points with low line resistance.
• Internal protection cicuit protects user and instrument from inadvertent connection to lines.
• 50 Hz / 60 Hz ripple detection and rejection.
• When powered from internal battery it enables more than 800 measurements of 500 mΩ load ∞ 2 A test current & 15 s measurement duration.
• Pre-programmed limits with PASS/FAIL evaluation of measurement result and bright GREEN/RED indicators providing visual evaluation of the results.
• Large 128 x 64 dots matrix display with backlight offers easy to read results and all associated parameters.
• Lightweight portable design.
• Up to 1500 test results with timestamp can be stored in internal memory.
• PC SW HVLink PRO enables downloading, review, analyses and printing of test results.

Additional Information:

• Item Code: MI3242

MicroOhm MI 3250 is portable low resistance ohmmeter for measuring low resistances of breakers and switches, busbars, cable joints, small to medium sized transformer and motor windings for industrial application, etc., with test current up to 10 A.

MEASURING FUNCTIONS

• Bidirectional resistance measurement from 0,1 µΩ up to 2000 Ω with test current up to 10 A
• Temperature compensation (with optional temperature probe)

KEY FEATURES

• Highly efficient 10 A current source generates 10 A into 200 mΩ load for 15 min without overheating.
• High overvoltage protection (CAT IV / 300 V) allows measurement in substations and other points with low line resistance.
• Internal protection cicuit protects user and instrument from inadvertent connection to lines.
• Custom limits can be set for PASS / FAIL evaluation of test result.
• 50 Hz / 60 Hz ripple detection and rejection.
• Instrument can be powered from mains or internal rechargeable battery. Instrument can be normally used while built-in fast battery charger charges the NiMh batteries.
• Large 320 x 240 dots matrix LCD offers easy-to-read results and all associated parameters.
• Lightweight portable design.
• Up to 1000 test results with timestamp can be stored in internal memory.
• PC SW HVLink PRO enables downloading, review, analyses and printing of test results.

Additional Information:

• Item Code: MI3250
• Delivery Time: Ex Stock
• Packaging Details: Corrugated Box

The Auto-Ohm 200 S4 is Vanguard’s fifth generation, microprocessor-based, true DC microohmmeter. It is designed for testing EHV circuit-breaker contact resistances, bushing contact joints, welding joints, or for any low-resistance measuring application. This high current and very lightweight (19.8 lbs/ 8.9 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.

The TRM-203 are three phase transformer winding resistance meters that allow the user to connect all test cables to the transformer bushings. The unit will then measure the transformer resistance value for each of the phases without the need to disconnect and reconnect cables for each phase

The TRM-403 are three phase transformer winding resistance meters that allow the user to connect all test cables to the transformer bushings. The unit will then measure the transformer resistance value for each of the phases without the need to disconnect and reconnect cables for each phase.