Purpose
Primary Injection Test Set DTE-20M (High-Current Circuit Breaker Test Equipment)
The DTE-20M is a heavy-duty primary injection test set designed for circuit breaker testing and current injection tests in the extended range of 100 A to 20,000 A. This advanced circuit breaker test equipment ensures accurate measurement and recording of operating time and current during high-power tests.
Main Applications
- Primary current injection up to 20 kA for transformer testing and certification.
- Breaker testing and evaluation of high-power fuses.
- Relay testing and calibration (overcurrent, thermal, and industrial-grade relays).
- Use as an adjustable AC high-current source up to 20 kA for laboratory and field operations.
Key Features
- Mounted on a transport trolley – easy to move and operate on test sites.
- High level of operator safety thanks to galvanic isolation between input and output circuits.
- Universal breaker testing device for circuit breakers, CTs, relays, and fuses.
- Widest range in the DTE product line, exceeding models DTE-10M, 14M, and 16M.
Price on request.
Contact us to buy the DTE-20M Primary Injection Test Set and get full details on delivery and availability.
Technical specifications
| Power supply voltage* | 400 V ± 5% |
| Power supply frequency | 50 Hz ± 1% |
| Maximum no-load voltage per turn at a 400 V supply voltage | 3.5 V |
| Maximum RMS current at the output busbars | 22000 A |
| Maximum power consumption of the DTE-20M | 150 kVA |
| True RMS output current measurement and recording range: from 10% (or not less than 100 A) to 100% of the selected range, with a measurement error of less than 3% | 100 A – 22000 A |
| Output current duration measurement and recording range, with a measurement error of less than 1.5% | 0.01 – 99999 s |
| Transformer overtemperature protection threshold | 80 °C ± 10% |
| Weight of the CU-20 control unit, max. | 3.6 kg |
| Weight of the CAU-20 current amplifier unit, max. | 66 kg |
| Weight of the transport trolley, max. | 12 kg |
| Weight of one copper flexible busbar, max. | 3.3 kg |
| Weight of the CS-20 current sensor, max. | 2 kg |
| Overall dimensions of the CU-20, max. | 300 × 250 × 135 mm |
| Overall dimensions of the CAU-20, max. | 480 × 250 × 320 mm |
| Overall dimensions of the transport trolley | 420 × 220 × 780 mm |
| Average service life of the device | 10 years |
* Possible DTE-20M power voltage is 230V, wherein the maximum output current – 11kA).
** Technical specifications correspond to reduced values for device operation with a single-phase voltage regulator
Device operating conditions
| Environment temperature range | 0°C — 35°C. |
| Relative air humidity at +25°C | ≤80%. |
| Atmospheric pressure, mm Hg | 630—800 |
Package contents
| Device | 1 pc. |
| Flexible bus, length – 2,0 m, section – 120 mm² | 6 pcs. |
| Power cord with three-phase power plug and portable socket | 1 pc. |
| Current sensor 2kA, 20kA/5A | 1 pc. |
| Operation Manual | 1 pc. |
| Calibration certificate | 1 pc. |
RNO, Inom. = 10, 20, 40, 80, 120A is included in the package by supplementary agreement.
Gallery
