SKU: 00-CDT-240-V3

Capacitor Discharge Tester 8A.
CE Approved!


Capacitor Discharge Tester for IEC testing of residual voltage after plug disconnect.

Output Plug Type *


Capacitor Discharge Tester 8A. <br />CE Approved! $3,260.00

Designed & Built in the USA

  • 1-Year Warranty
  • 100% Secure Checkout
Guaranteed Safe Checkout

For IEC Testing of residual voltage after plug disconnect.  The CDT-240 disconnects the line at the voltage peak and analyzes results to the requirements of various Standards, allowing quick results.  Scope output for viewing decay waveform.  Presets for EN 61010, EN 60065, EN 60950, EN 60601-1 and EN60335.  Recommendations for Pluggable Type B equipment.  NIST calibration supplied; A2LA calibration available.  15A option for testing large equipment.

Questions?  Contact us.


  • Accurate; in accordance with CTL voltage and time specifications.
  • Disconnects input test voltage at positive or negative peak, normal and reversed polarity
  • Tests Line-Ground, Line-Neutral and Neutral-Ground.
  • Micro-controller Technology, one button test, easy setup, LCD display indicates test results.
  • Maximum Rated Test Current 8A, 15A optional.
  • CBX built in for functionality test.
  • Ergonomically designed for safety, speed and efficiency.
  • Designed for product development, production and laboratory use.
  • Rugged construction that can withstand a 6″ drop with no damage.
  • Cables, manual and calibration certificate included.
  • One year warranty.


Minimum/Maximum Test Voltage: 90Vrms min/ 270Vrms max.
Maximum Test Current: 8A.
15A for testers with 15A option.
Fuse: 10A, 250V, time delay, 1-¼” x ¼”.
20A, 250V, time delay, 1-¼” x ¼” for testers with 15A option.
Probe Impedance: > 100MΩ, < 25pF
AC Peak Detection Accuracy: EUT disconnect within 5% of supply voltage peak.
Test Time Range: 0.50 – 10.0 Seconds.
Voltage Setting Range/Meas. Range: ±30 to 388V.
Voltage Setting Resolution: 1V.
Test Time Accuracy: ±1% for times ≥ 1 second, +/- 10ms for < 1 second.
Voltage Meter Accuracy: ±1.5% of instrument measuring range; ±2% ±0.8V up to 381Vpeak.
(See Appendix E for accuracy information with respect to voltage readings).
Frequency: 50-60Hz.

Rated Input Voltage: 100-240V.
Frequency: 50/60Hz.
Fuse: 2A, 250V, time delay, 5x20mm.

Safety Interlock: 2-pin terminal block on rear panel; shorted for operation.

BNC 100:1: Referenced to ground, 100:1 of measured voltage. (L-N, L-G, N-G) +/-2%.
L, N, G: Socket 4mm 1000V CAT III 32A.
Output receptacle options: NEMA 15A/125V, UK 12A/250V, SCHUCKO 16A/250V, CHINESE 10A/250V.




Listen to Expert Highlights

CDT 240 V2 Calibration Procedure Section 9.1

CDT-240: Overview Video

CDT-240: Conducting a Voltage Decay Test-Video

CDT-240: Conducting a Time Delay Test-Video

CDT-240: EN60950 Capacitive DIscharge Test-Video

CBX R-C Time Constant-Video

More information

CDT-240 Tolerance compared to oscilloscopes and CTL DSH 251e

Recall Release Note (Not for V2, only previous version)