Features and Functions
■ Provides current isolation for energy meter testing in three-phase systems with non-separable voltage and current circuits, ensuring measurement accuracy during multi-meter testing.
■ Enables accurate equipotential method calibration for both three-phase and single-phase energy meters with non-separable voltage and current circuits, where each meter is independently supplied by an isolation current transformer (CT) .
■ Features three independent 1:1 current transformers per unit, supporting isolated current supply for individual meters in multi-meter setups .
■ Offers a wide current range of 0.05A-120A/0.05A-120A for primary and secondary circuits, Rated range (with 0.01% accuracy): 0.1A–100A/0.1A–100A
■ Single turn through the center, energy saving and high efficiency, the maximum output power of 70VA (I = 100A)
■ Special electronic error compensation technology ensures high accuracy (0.01% class) across the wide range .
■ Provides output secondary open-circuit and overload protection indication, alarm and automatic shorting.
■ External status indication (P1/P2/P3 luminous indicator lights) and control buttons for easy operation.
■ Supports series connection of multiple CTs, with primary inputs connected in series and secondary circuits operating as independent power supply loops for parallel meter testing.
Specifications
■ Size: L/W/H: 170mm×200mm×250mm
■ Accuracy class: 0.01% (COS∮=0.5C…1…0.5L ), Primary Current/Secondary Current: 0.1A-100A/ 0.1A-100A
0.1A-1A: Z=0.1Ω, 1A-100A: Z=0.6V Divided by the present current value, Accuracy class 0.01
■ Rated frequency: 50Hz/60Hz±5%
■ Insulation performance: primary to secondary winding, primary/secondary winding to shell:2500V/1min<5mA.
■ Output Load:
Output range: 0.1-1A 0.5Ω
Output range: 1A-100A 0.6V Divided by the present current value
Output Load Voltage: max 0.7V
■ Working environment temperature: +22℃±5℃
■ Auxiliary power supply: 2*13.5V AC 50Hz(60) ±5%
