Purpose
Circuit Breaker Testing Device DTE-6M (High-Current Circuit Breaker Test Device)
The DTE-6M Primary Injection Test Set is a modern high-current circuit breaker test device designed for verifying the performance and time–current characteristics of AC circuit breakers in the extended range of 20 A to 6000 A. This advanced equipment provides precise measurement and recording of both current and operating time of circuit breakers, including high-capacity protective devices used in industrial power systems.
Main Applications
- Testing of low-voltage and high-capacity circuit breakers (verification of time–current characteristics up to 6 kA).
- Primary current injection testing and certification of measuring and protective current transformers under high load.
- Testing and calibration of overcurrent and thermal relays, including devices rated for high operating currents.
- Fuse testing and verification for industrial power circuits.
- Use as a controllable AC current source up to 6 kA for low-impedance laboratory and field applications.
Key Features
- Portable and robust design – suitable for both laboratory environments and on-site high-current testing.
- Galvanic isolation of the output circuits from the power supply ensures operator safety.
- Extended current range – one device covers testing of circuit breakers, transformers, relays, and fuses up to 6000 A.
- Enhanced performance compared to the DTE-3M, making it suitable for demanding industrial applications.
Price on request.
Contact us to buy the DTE-6M Primary Injection Test Set directly from the manufacturer and receive detailed information on delivery and availability.
Technical specifications
| *Supply Voltage, V | 400 ±5% |
| Supply Network Frequency, Hz | 50 ±1% |
| Maximum Voltage on Output Buses, V | 2,4 |
| Maximum Current on Output Buses (RMS), A | 6600 |
| Maximum Power Consumption DTE-6M, kVA | 45 |
| **Range of True RMS measurement and recording of the output current, A, from 10% to 100% of the selected range with a stated measurement error of less than 3%. | 20 – 6600 |
| Measurement and Registration Range of Output Current Duration, sec, with measurement error less than 1.5% | 0.01 – 9999 |
| Threshold of Power Transformer Overheat Protection, °C | 96 ±10% |
| Overall Dimensions of Control Unit CU-6, mm | 300×250×135 |
| Overall Dimensions of Current Amplifier Unit BPS-6, mm | 480×250×320 |
| Overall Dimensions of Transport Cart, mm | 420×220×780 |
| Mass of Control Unit CU-6, kg, max | 3.6 |
| Mass of Current Amplifier Unit BPS-6, kg, max | 54 |
| Mass of Current Sensor CS-6, kg, max | 3 |
| Mass of Transport Cart, kg, max | 12 |
| Average Service Life of the Device, years | 10 |
* The device can be powered from a voltage of 230V, while the maximum output current = 4,5kA.
** Technical specifications correspond to reduced values for device operation with a single-phase voltage regulator
DTE-6M operating conditions
| Environment temperature range | -5°C – +35°C |
| Relative air humidity at +25°C | ≤85%. |
| Atmospheric pressure, mm Hg | 630 — 795 |
You can see the 3D model of the device at this link





