Product Introduction

       According to "JJF 1264-2010 Calibration Specification for Transformer Load Boxes", this equipment is suitable for calibrating transformer load boxes with a rated frequency of 50Hz and an operating ambient temperature of (0~40)°C.

Product Features

☆、Equipped with light indicators for clear gear display; automatic refresh upon startup; manual/automatic switch buttons are reasonably designed. When connected to the main unit, it is generally set to automatic mode. When manual selection is needed, switch to manual mode. Voltage gears, like current gears, have light indicators for each gear.
☆、To ensure stable accuracy of the instrument, over 90% of internal components are imported brands, providing customer satisfaction and reducing the probability of equipment failure.
☆、Fully electronic load box with automatic load point switching. Whether it is current load or voltage load, just give one command to automatically switch the internal load to real load, unlike simulated or virtual loads used by other manufacturers.
☆、The load box adopts printed circuit board design to reduce wiring, minimize resistance, and improve stability.
☆、The currently used volt-ampere value is displayed with lights, making it highly visible.
☆、Automatic refresh upon startup; automatic detection of load for each gear; user-friendly interface design with convenient operation.
☆、The overall design concept and level are superior to most load boxes in the domestic market.

Technical Parameters

☆、Impedance measurement range: 0.0001Ω~99.9999Ω
☆、Admittance measurement range: 0.0001mS~99.9999mS
☆、Power supply: 220V±10%, 50Hz±2Hz
☆、Measurement accuracy: 0.5%
☆、Environmental conditions: temperature (5－40)°C
☆、Power supply operating frequency range: 50Hz±0.5Hz 
☆、Measurement range: current load box (0.010Ω-10Ω)
☆、Resolution 0.00001Ω (In=5A)
☆、Voltage load box (0.010mS-20mS)
☆、Resolution 0.00001mS (Un=100V)
☆、Basic error: 1.5-level analog meter
☆、In-phase component DX=±(a%×X+b%×Y)
☆、Quadrature component DY=±(a%×y+b%×X)
☆、a and b are accuracy class indices, a=b=1 or 0.5
☆、X and Y are the absolute values of the displayed values
☆、Operating range: current 5%-120%    （In=1A） 1%-120%   （In=5A）
☆、Voltage: 20%-120%   （Un=100V）
                 20%-120%   （Un=100/3V）
                 20%-120%   （Un=100/V）
                 20%-67%    （Un=150V）
☆、Instrument power consumption 30VA   Voltage regulator capacity   300VA