winding Resistance

Equipment to Measure Transformer Winding Resistance

RAYTECH WR14

Pure, filtered DC power source for the highest accuracy readings
Charges inductive loads up to 1,500 Henry
Battery-operated
2 independent measuring channels
Fully automatic cooling curve analysis (option AHRT-01)
Fast discharge with discharge indicator – visible and audible indicator for discharge status

RAYTECH WR50-13.3

Large DC winding resistance measurements range from very low values 0.00µΩ up to 100kΩ
Advanced transformer core demagnetization
Fully automatic cooling curve analysis (option AHRT 01)
Adjustable output current between 25mA and 50A
Very fast charge and discharge of high inductive loads up to 1500 Henry
Three measuring channels which enable measuring low voltage, high voltage and tertiary side simultaneously

Raytech mini-ATOS

Built-in Fully Automatic Multiplexer
Winding Resistance Measurements, Dual Power Supply
Turns Ratio, Excitation Current and Phase Displacement Measurements
Transformer Winding Connection and Vector Group Detection
Demagnetization With the Raytech SPP (Smart Pattern Predictor) Method
Core Magnetic Balance Measurement
DRM (Dynamic Resistance Measurement)
FRSL (Frequency Response of Stray Losses)
Tap Changer Motor Current Measurement

VANGUARD TRM-403

Performs three phase testing on a transformer without the need to switch cables
Can provide individual Delta winding resistance values
Can provide individual Wye (with no neutral) winding resistance values
Demagnetize transformer after test
Selectable test current from 1A to 40A
Computer control via RS-232C, USB, or Bluetooth interface

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