Introduction

Three-phase energy meter field calibrator is an advantageous product among electric energy metering series products of the company, and is integrated with energy meter calibrator and low voltage metering device, with energy meter error calibration, error wiring judgment, measurement of transformation ratio, meter reading, harmonic measurement and other functions.
Warning: As this instrument belongs to electric working equipment, for the sake of your safety, please abide by the national regulations on production safety, and operate strictly according to the field calibration procedures of electric power metering devices.

Notes:

l Do not clip the pulse line clip onto the voltage terminal of the energy meter; please do not insert the voltage terminal line into the current terminal;

l Do not insert the current terminal into the voltage terminal;

l Make a right choice of the work power supply (Note: the working voltage range of switching power supply is AC57.7 V ~ 440 V);

l Choose the current range correctly, and the current range generally does not exceed 200% of the rating;

l Each clamp meter has positive and negative ends: "+" end is the current input, and "-" end is the current output; please do not connect them reversely;

l The clamp meter’s color represents a different phase: yellow - A phase, green - B phase and red – C phase;

l Do not mix different phases of clamp meter, or else it could affect the accuracy of measurement;

l At the time of three-phase three-wire measurement, please do not connect B phase voltage line and current line to the instrument, lest affect the accuracy of measurement.

l H3A instrument has a built-in power supply, which can supply power from the voltage terminal; H3A is used on the calibration console; please select the instrument’s battery or external power supply, lest affect the voltage output of the calibration console.