Purpose
Primary Injection Test Set DTE-3M (Circuit Breaker Test Device)
The DTE-3M Primary Injection Test Set is a portable circuit breaker test device designed for verifying the performance and time–current characteristics of AC circuit breakers in the 20 A to 3000 A range. This primary injection test equipment measures and records both current and operating time of the circuit breaker under test.
Main Applications
- Circuit breaker testing (verification of time–current characteristics up to 3 kA).
- Primary current injection testing and certification of measuring and protective current transformers.
- Relay testing and calibration (overcurrent relays, thermal relays).
- Fuse testing and verification.
- Use as an adjustable AC current source up to 3 kA for low-impedance laboratory circuits.
Key Features
- Portable test set – compact and convenient for laboratory and field use.
- Galvanic isolation of the output circuits from the power supply ensures maximum safety.
- Versatile testing device – suitable for circuit breakers, transformers, relays, and fuses.
Price on request.
Contact us to buy the DTE-3M Primary Injection Test Set and get detailed information about delivery and availability.
| Supply voltage, V | 230 ±5% |
| Supply network frequency, Hz | 50 ±1% |
| Maximum voltage on one turn of the output bus, V | 1.3 |
| Maximum current on output buses (RMS), A | 3300 |
| Maximum power consumption DTE-3M, kVA | 8 |
| Continuous operating time at 3 kA output current, s (min) | 5 |
| *True RMS measurement and recording range of output current, A, with a stated measurement error of less than 3%* | 20 – 3300 |
| Measurement and recording range of output current duration, s, with measurement error less than 1.5% | 0.02 – 99999 |
| Power transformer overheat protection activation threshold, °C | 96 ±10% |
| Mass of control unit BU-3, kg (max) | 3.5 |
| Mass of current amplifier unit BPS-3, kg (max) | 18 |
| Mass of copper flexible busbar, kg (max) | 3.2 |
| Mass of current sensor DS-3, kg (max) | 1.8 |
| Overall dimensions of BU-3, mm (max) | 300×250×135 |
| Overall dimensions of BPS-3, mm (max) | 150×320×300 |
| Average service life of the device, years | 10 |
You can see the 3D model of the device at this link
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