Knowing your breakers will operate correctly is key when determining risk to employees

Employers are obligated to perform risk assessments and eliminate or mitigate electrical hazards using accepted engineering principles. 

There are different guidelines for performing these risk assessments around the world. Some of the standards include EN 50110, NFPA 70E, CSA Z462, and IEC 61482. All studies based on these standards assume the breaker works properly. 

For safety purposes, this must be verified.

Testing breakers in the field

Primary injection test equipment is often very large, and it can be difficult to get the equipment near the breakers being tested. Breakers can be installed on mezzanines, in small rooms, or in other locations that make it difficult to place the test equipment where it needs to be.

Portable High-Power Test Set

SPI2000 was developed to give teams a more practical way to carry out high-current primary injection testing in the field. 

Its modular, stackable format allows the setup to be matched to the job, rather than forcing teams to move a full heavy-duty system into every environment.

The main unit can test up to a 600 A breaker, and boosters can be added when higher output is needed. With boosters, up to a 1,600-amp breaker can be tested, or even larger breakers if settings are lowered during the test. That gives teams more flexibility in how much equipment they bring to the site and how they deploy it. In tighter or access-restricted environments, that reduction in burden is a safety advantage in itself.

Verified Protection Is Part of the Safety Story

Safer field work is one side of the story. The other is knowing the breaker will operate correctly when it matters.

Primary injection testing helps confirm breaker performance by applying real current and measuring how the breaker responds. That matters because a breaker that fails to trip correctly can expose equipment, infrastructure, and people to unnecessary risk. In practical terms, safer testing is not only about getting the work done more smoothly. It is also about proving the protection will respond as intended before the asset is trusted in service.

Controlled Testing Helps Reduce Uncertainty

SPI2000 also supports a more controlled testing process once the system is in position. Users can enter the required current and let the system generate and regulate it, reducing the need for manual current hunting during the test. That supports a clearer workflow and helps teams focus on breaker behaviour rather than constant adjustment.

The platform also supports long time, short time, instantaneous, and ground fault testing, helping users build confidence that the breaker is operating within the expected range.

Breaker Testing Ensures Proper Operation for Safety

Engineering studies are performed to determine what PPE is required to work on live electrical equipment. These studies are only valid if breakers operate as designed and as set.

Better breaker testing helps protect:

• the team performing the work
• the asset being returned to service
• the wider electrical system
• the people and operations that rely on that protection working correctly. 

What This Means for Contractors

For NETA technicians and contractor-led field teams, safety is shaped by both the working environment and the testing outcome. A setup that reduces handling burden, fits the site more practically, and helps verify breaker operation with confidence supports safer work at both levels.

That is where SPI2000 brings value. It helps teams carry out serious high-current breaker testing in a format that is easier to deploy, easier to scale, and better suited to real field conditions.