Purpose
Сircuit Breaker Testing Device DTE-14M (High-Current Circuit Breaker Test Device)
The DTE-14M Primary Injection Test Set is a powerful circuit breaker test device designed for testing and verifying the time–current characteristics of AC circuit breakers in the extended range of 50 A to 14,000 A. It measures and records operating time and current, making it essential for testing heavy-duty breakers, protective relays, fuses, and current transformers.
Main Applications
- Circuit breaker testing (time–current characteristics up to 14 kA).
- Primary current injection testing and certification of protective and measuring CTs.
- Relay calibration and adjustment (overcurrent and thermal relays for industrial use).
- High-power fuse testing and verification.
- Use as an adjustable AC current source up to 14 kA for laboratory and field tests.
Key Features
- Mounted on a transport trolley – easy relocation and simplified operation at test sites.
- Full galvanic isolation of output circuits from the supply ensures operator safety.
- Wide testing range: breakers, transformers, relays, and fuses up to 14,000 A.
- Extended capacity compared to DTE-3M, DTE-6M, and DTE-10M.
Price on request.
Contact us to buy the DTE-14M Primary Injection Test Set directly from the manufacturer and get delivery details.
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 | 15400 A |
| Maximum power consumption of the DTE-14M | 110 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% | 50 A – 15400 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-14 control unit, max. | 3.6 kg |
| Weight of the CAU-14 current amplifier unit, max. | 60 kg |
| Weight of the transport trolley, max. | 12 kg |
| Weight of one copper flexible busbar, max. | 3.3 kg |
| Weight of the CS-14 current sensor, max. | 2 kg |
| Overall dimensions of the CU-14, max. | 300 × 250 × 135 mm |
| Overall dimensions of the CAU-14, max. | 420х220х390 mm |
| Overall dimensions of the transport trolley | 480 × 580 × 780 mm |
| Average service life of the device | 10 years |
* Possible DTE-14M power voltage is 230V, wherein the power output would three times decrease. (Maximum output current – 9kA).
** The technical characteristics correspond to the given values when operating the device complete with a single-phase voltage regulator (SVR).
Device operating conditions
| Environment temperature range | -5 °C — +35°C. |
| Relative air humidity at +25°C | ≤85%. |
| Atmospheric pressure, mm Hg | 630—800 |
Package contents
| Control unit of the device, OU-14. | 1 pc. |
| Current amplifier unit of the device, CAU-14. | 1 pc. |
| Transportation trolley | 1 pc. |
| Current sensor, CS-14, with connection signal cable. | 1 pc. |
| Flexible busbar, length – 2,0 cross-section – 120 mm2. | 5 pcs. |
| Connection plug SVR | 1 pc. |
| Device power outlet | 1 pc. |
| Grounding (earthing) cable (5 meters) | 1 pc. |
| User’s manual DTE-14М. | 1 pc. |
| SVR, single-phase voltage regulator, Inom. = 10, 20, 40, 80, 120, 160 А not included in package contents and can be purchased separately. |
You can see the 3D model of the device at this link
Gallery
