Comprehensive Transformer Testing Systems
Transformer Tester

5238  built-in Meter mode function will help you to save significantly on production facility cost, and because it could be used as a LCR power meter, you are able to elevate quality assurance and test method simultaneously i.e. leverage efficiency and lower facility cost.
MICROTEST transformer tester series offer exclusive fixture scan control kit that applies innovative CAT.5 network cable connection to simplify wiring structure and offer Open/Short calibration function, provide fixture zero-setting and high-frequency compensation functions to obtain higher accuracy for component testing. When the test frequency of the transformer becomes higher (higher than 200KHz), the interference from fixtures would also become bigger along with the test process going. Therefore, fixture zero-setting function is able to help the tester to acquire accurate measured values, which makes it become an indispensable device for quality assurance.

  • Basic Accuracy up to 0.1%
  • Support computer software connection and advanced software editing function
  • Innovative fixture zero-setting function to successfully prevent fixture interference from affecting the accuracy of measured values due to high test voltage
  • Able to test 30 items per second under fastest test speed. Elevate productivity significantly through auto-scan function
  • Paired with a 20-pin fixture to meet the test requirements for multi-pin network communication transformer
  • Optional 100mA DC Bias / 5x38 model is equipped with Meter Mode function / Support USB interface for data storag

Measurement Data

Frequency 20Hz-200kHz (Meter Mode function)

Turn Ratio Frequency

50Hz ~ 200kHz (10Vac Max.)

Measurement Parameters

Inductance (L)、Impedance (Z)、Capacitance (C)、Resistance (R)、Conductance (G)、Susceptance (B)、Admittance (Y)、Alternating Current Resistance (ACR)、Quality Factor (Q)、Phase angle(Ø)、Direct Current Resistance (DCR)、Leakage Inductance、Turn Ratio、Balance、Short Circuit

Basic Accuracy
±0.1% (AC  parameter :  1KHz)
Output Impedance 100Ω

Frequency trimming resolution

Frequency output accuracy ±0.01%
Point of Test 20 Points
ESR  Series/Parallel
Mathematical Mode Absolute/Percentage 


Open Circuit/ Short Circuit/Load Calibration


Power Supply Voltage 90Vac ~ 125Vac or 190Vac ~ 250Vac
  Frequency 48Hz ~ 62Hz
Display 320*240 dot-matrix display
RS-232, Handler (option), USB (option)
Flash Memory 64 sets
Operation Auto、Manual、Remote Trigger
Environment Temperature : 10 ~ 40℃     Humidity : 10% ~ 90%
Dimension (W*H*D) 360x133x420 (mm)
Weight 9 (Kg) 

Parameters Measurement Ranges

Parameter Range Basic Accuracy
(AC  parameter :  1KHz)
L, LK 0.1nH ~ 9999.99H  0.1%  75ms
C 0.00001pF ~ 999.99mF  0.1%  75ms
Q,D 0.00001 ~ 99999  0.0005  75ms
Z,X,R 0.00001Ω ~ 99.9999MΩ  0.1%  75ms
Y 0.01nS ~ 99.9999S  0.1%  75ms
θ -180°~ +180°  0.03°
DCR 0.01mΩ ~ 99.999MΩ  0.1%  25ms
Turn 0.01 ~ 99999.99turns  0.5%  75ms
Pin-Short 12 pairs, between pin to pin  --  25ms


Power transformer, Network communication transformer

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Standard Accessories

  • Power cord
  • User manual
  • Transformer Scan Box (F5220)
  • Footswitch
  • BNC Kevin Clips (F423501)

Optional Accessories

  • Transformer Test Link Software
  • RS-232 cable
  • Handler Box