New
SPI4000 smart primary injection test system

Primary injection test set for protective relay equipment and circuit breakers
The SPI4000 is a high-current primary injection tester for circuit breakers and relays up to 4000 Amps - and it’s NEMA AB-4 compliant.
Space-efficient power for testing even in the tightest quarters

Space-efficient power for testing even in the tightest quarters

The SPI4000, the smallest primary injection test system in its class, packs a punch with its compact design. It not only fits seamlessly into tight testing environments but can also slip through standard door openings, ensuring testing power wherever you need it.

High current capacity

High current capacity

With a maximum frame size of 4000 Amps, the SPI4000 excels in providing substantial current levels for precise testing of circuit breakers and related equipment, ensuring it meets the demands of industrial and electrical applications.

Exceptional mobility, guaranteeing your testing equipment is ready and onsite when you require it

Exceptional mobility, guaranteeing your testing equipment is ready and onsite when you require it

Weighing only 514 lbs, the SPI4000 is remarkably lightweight for a high current primary injection test system. Its portability not only simplifies transportation but also reduces shipping costs, making it an economical choice for users requiring mobility and ease of relocation

Effortless precision with automatic zero crossing

Effortless precision with automatic zero crossing

One of the unique features of the SPI4000 is the ability to automatically adjust the output firing angle at the current zero crossing for every load. This eliminates DC offset for all circuit breaker types and removes the need for manual adjustment of firing angles, streamlining the testing process and ensuring accuracy across different loads and circuit breakers. 

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Find a supplier

About the product

The SPI4000 is a high current primary injection test system with the flexibility to test, via primary injection, a wide variety of devices, including low voltage power circuit breakers, moulded-case circuit breakers equipped with thermal magnetic or electronic trip devices, overcurrent relays, and thermal relays. Designed to accommodate circuit breakers with ratings of up to 4000 Amps frame size, the SPI4000 fully complies with NEMA AB-4 test guidelines. 

The SPI system is the first high current test system that allows you to type in a predetermined current amplitude and will then generate and regulate the requested high current without preheating the test sample by pulsing the output current at high amplitudes. Additionally, the SPI system has the unique ability to turn on at the current zero crossing every time for any load by automatically adjusting the output firing angle. This eliminates DC offset for all circuit breaker types and eliminates the need for you to determine and manually adjust the firing angle for various loads and circuit breakers.

Product documents

Data sheet

SPI4000_DS_EN-US.pdf
pdf 1.76 MB

Further reading and webinars

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