Megger SPI225 Smart Primary Injection Test System

The Megger SPI225 is a cutting-edge smart primary injection test system designed for accurate testing, verification, and commissioning of protective relays and circuit breakers in medium- and high-voltage electrical systems. Ideal for utility operators, industrial maintenance teams, and field engineers, this system ensures reliable primary current injection for complete protection testing.

Equipped with advanced measurement technology, the SPI225 allows precise verification of relay trip functions, timing, and current characteristics under real operating conditions. Its compact and portable design, combined with an intuitive interface, makes it highly suitable for field use, enabling engineers to perform fast, safe, and accurate tests even in challenging environments.

Key Features:

• Smart primary current injection for testing protective relays and circuit breakers

• Accurate measurement of trip times, currents, and relay responses

• Portable and lightweight design for field applications

• Intuitive user interface with digital display and guided operation

• Data logging, storage, and reporting for compliance and maintenance records

• Safe and reliable operation in medium- and high-voltage networks

• Supports a wide range of protective relay types and configurations

Whether used for commissioning, routine maintenance, or troubleshooting, the Megger SPI225 Smart Primary Injection Test System provides fast, precise, and dependable testing to ensure optimal performance and safety of electrical protection systems.

Specifications

1. Electrical Measurement & Testing

• Test Type: Primary current injection for protective relay and circuit breaker testing

• Current Output Range: 0 – 225 A AC (continuous), short-term up to 300 A

• Voltage Output: Nominal up to 5 V AC (for low-resistance load testing)

• Trip Time Measurement: Resolution 1 ms

• Measurement Accuracy: ±1 % of reading for current, ±1 ms for time

• Supported Relays: Overcurrent, differential, distance, and other standard protective relays

2. Functions & Capabilities

• Verification of relay trip settings and timing

• Primary injection testing of circuit breakers and protection systems

• Programmable test sequences for automated testing

• Real-time display of current, voltage, and trip times

• Data logging and export for analysis and maintenance records

• Manual and automatic test modes for flexibility

3. Display & Interface

• High-resolution digital display for real-time measurement

• Intuitive menu-driven interface with guided operation

• LED indicators for status, overload, and safety warnings

• USB / PC connectivity for data transfer and advanced reporting

4. Safety & Compliance

• Designed for safe operation in medium- and high-voltage environments

• Overcurrent and overvoltage protection integrated

• Conforms to IEC 60255 and other relevant standards for protective device testing

• Rugged, insulated housing suitable for field use

5. Physical & Environmental

• Dimensions: Approx. 400 × 250 × 150 mm

• Weight: ~11 kg (portable with handles)

• Operating Temperature: -10°C to +50°C

• Storage Temperature: -20°C to +70°C

• Humidity: 0 – 95 % non-condensing

• Housing: Rugged, portable, impact-resistant case

6. Accessories (Typical)

• Test leads and primary injection cables

• Connection clamps for circuit breakers and relays

• Carrying case for field portability

• User manual and calibration certificate

• Optional software for automated testing, data logging, and reporting