BuyLog Flippingbook NOV 2025

TRANSFORMERS - LOW VOLTAGE, DRY TYPE, BUYLOG SECTION 5

5-16

— Factory installed infrared viewing windows Product overview

IR window features and benefits Well known brand: IRISS® Poly-View System™ windows • Large viewing area • Visually clear IR transmissive viewing area to view all terminals • Wide field of view (FOV) angle assures better image capture and test results • Enables undisturbed monitoring inside energized transformer • Compatible with visual, UV, shortwave, midwave and longwave IR spectrums • Helps alleviate most NEC 70E PPE requirements for transformer inspections • Locking covers help protect viewing windows from impact, flying debris and dust

ReliaGear® XFMR low voltage dry type transformers with factory-installed infrared (IR) viewing windows allow for safe thermographic testing of energized units. Thermographic testing, also known as thermal imaging, involves using an infrared camera to detect and measure the heat emitted by objects. This technology is widely used in various fields, including electrical systems, medical diagnostics and building inspections. Incorporating all of the same technical specifications and certifications of the ReliaGear XFMR product line with the added feature of the IR viewing window — providing easier maintenance and improved system reliability. Standards supporting the use of IR windows • NFPA 70E Standard for Electrical Safety in the Workplace • NETA Standard for Maintenance Testing

— Transformer with IR window 30-45 kVA window closed

— Transformer with IR window 30-45 kVA window open

Specifications for Electrical Power Equipment and Systems, ANSI/ NETAMTS-2023 Section 7.2.1.1

Factory installation is beneficial in two ways • Front cover paint is uncompromised • Ensures adequate thermographic imaging coverage of terminals and coils • Cost and time savings

The number of factory installed IR windows varies by transformer size. kVA

No. of IR windows

15

1 1 2 2 2 2 2 2 2

30-45

75

112.5

— Transformer with IR window 500 kVA window closed

150 225 300 500 750

— Transformer with IR window 500 kVA window open