Electrical testing
Comprehensive measurement, insulation resistance, ground resistance, and winding resistance testing.
Recognized and certified
Empowering sustainable infrastructure excellence
Over 30 years of trusted electrical testing expertise, transformer diagnostics, and equipment rental for teams that keep critical power systems moving.
Easy rental and service inquiries
What we do
Testing that makes complex systems clear
Transformer diagnostics
Advanced diagnostic methods for commissioning, maintenance, and condition assessment.
Equipment rental
Flexible short-term and long-term access to specialist electrical testing equipment.
Built on experience
Reliable answers for critical assets
From OLTC maintenance to complete substation acceptance testing, SPAJ combines field experience with precise instruments and clear reporting.
Meet the team behind the work →