In the past, for the acceptance of switchgear, the circuit resistance test required pushing a large desktop instrument into the switchgear room, connecting the power supply, arranging the position, pulling the wires, and cleaning up after the test was completed. It took a long time to test the circuit resistance of one cabinet. Since switching to a handheld device, the efficiency has completely changed.
The core advantage of handheld: truly entering the field
The weight of the HZ-5100S host is only 1.7kg, with dimensions of 246 × 156 × 62mm, equivalent to the size of a thick book. It can be held with one hand and wired with the other hand, which is fully sufficient. Equipped with a dedicated wristband and adjustable tilt seat, the grip is stable and easy to operate within narrow switchgear intervals.
Desktop circuit resistance testers often weigh over ten kilograms and require transportation to the site and finding a place to place them. In indoor switch rooms or GIS rooms with limited space, it is often difficult to find a place to place them. Handheld directly in your hand, measure wherever you go.
Built in lithium battery, does not rely on on-site power supply
The HZ-5100S is equipped with a built-in lithium battery, which can perform over 600 rapid measurements continuously after being fully charged, or continuously output 100A current for up to 60 seconds. There are not always convenient power sockets on the power site, especially in outdoor switch stations and temporary maintenance occasions, where the advantage of not relying on external power supply is very prominent.
It only takes about 3 hours to fully charge, and the charger supports a wide voltage input of 100-240VAC, which can also be charged when traveling outside the city.
5.6-inch high brightness screen, still visible under strong sunlight
Direct sunlight is common in outdoor substations, and many instrument screens cannot be seen clearly under strong light. The HZ-5100S is equipped with a 5.6-inch industrial grade high brightness color LCD screen, specially designed for outdoor strong light environments, and data reading is not affected by ambient light.
5-minute automatic shutdown to protect the battery
After measuring the interval between transferring one device to the next, if you forget to turn it off, the instrument will automatically shut down after 5 minutes to avoid the battery being depleted due to prolonged standby and extend its lifespan. The instruction manual emphasizes that if not in use for a long time, please turn off the power in a timely manner. It is strictly prohibited to use the battery with low power, as low power can seriously shorten the battery life and even cause the battery to be scrapped.
Handheld design is not simply about "shrinking" desktop instruments, but rather a specialized optimization tailored to actual operational scenarios on site.