Ultra-light 200A Handheld Resistance Tester

Ultra-light 200A Handheld Resistance Tester

MOEORW-W5020TH is compact ultra-lightweight lithium-driven loop resistance tester adopting optimized Kelvin four-wire measuring principle, equipped with dual 100A/200A constant current output modes and fast 1s rapid test option. It integrates multi-layer protection circuit (over-current, short-circuit, over-temperature, battery over-discharge protection), automatic wiring diagnosis and real-time voice broadcast after measurement completion, applicable for all-weather outdoor high-voltage equipment field preventive testing. Up to 100 groups of measured data can be locally stored with optional BLE4.0 Bluetooth data transmission and wireless printing function, complying with multiple domestic power industry testing standards.

1. Hardware Design & Structural Advantage· Ultra-compact ABS insulated housing with independent separated four terminals (I+/U+/I-/U-) and dedicated DC8.4V charging port plus ventilation cooling fan; rotary mode selector knob integrates measurement gear and history record switch for quick function shift.· Optimized lithium power management chip with multi-level hardware protection circuit covering overcurrent, overtemperature and over-discharge; internal fan forced cooling system to accelerate heat dissipation during high-current 200A continuous measurement.

2. Performance Capability· Dual current grades(100A/200A) plus regular/fast dual testing logic: fast mode locks measurement duration to fixed 1s for rapid spot inspection; regular mode supports multi-time parameter adjustment to satisfy precise slow measurement requirement.· Automatic out-of-range prompt with OL screen display when measured resistance exceeds rated upper limit; real-time fault code display for quick failure positioning.

3. On-site Practical Value· One-button measurement triggering design with automatic post-test voice value readout to improve field reading efficiency under noisy industrial environment; 6s mandatory cooling lock after each measurement prevents frequent continuous startup damage of power module.· Multi-channel data management: local storage, USB wired data export, optional Bluetooth wireless transmission to portable printer or mobile terminal mini-program for digital archiving without manual record entry.· Real-time on-screen display of residual battery capacity, internal ambient temperature and operation status for operator real-time equipment state monitoring.

1. Field preventive test for circuit breaker, earthing switch, disconnecting switch of transformer substation, wind farm and photovoltaic power station high-voltage cabinet.

2. Quick contact resistance spot inspection for new switchgear factory finished product offline sampling test.

3. Emergency maintenance test for industrial high-voltage distribution cabinet conductive loop contact failure troubleshooting.

• DL/T967-2005: Verification specification for loop resistance tester & DC resistance rapid tester· GB/T6587-2012: General specification for electronic measuring instruments· DL/T596-2005 & Q/CSG114002-2011: Preventive test specification for power equipment

1. Battery Maintenance: Store with residual capacity over 50% for long idle period; only original matched dedicated charger for charging; stop measurement immediately once E08 low-battery fault pops up and complete full recharge.

2. Mechanical Protection: Avoid heavy drop, extrusion or upside-down placement during transportation; prohibit self-disassembly of casing as built-in high-capacity lithium cell bears explosion risk after arbitrary modification.

3. Test Operation Norm: Cut off device power fully before connecting/disconnecting all test leads; prohibit moving test clips during ongoing measurement process.

4. Ventilation Check: Keep cooling fan vent unblocked during measurement; prevent sundries blocking air inlet leading to poor heat dissipation and premature over-temperature protection trigger.