UL 50V applies to infrared windows and is more of a classification than a standard that applies for performance-of-build characteristics.
The IEEE C.37.20.2 Section 3.6 is the impact and load requirement for all viewing panes installed on medium and high voltage switchgear. Panes made from crystal or glass will not pass these requirements.
UL 508 and UL 508A are classifications for components used on electrical panels. UL746C is a standard requiring flammability and impact tests for polymeric materials used on electrical equipment.
IP65/NEMA 4 equivalent ratings certify enclosures for indoor or outdoor use. They protect against access to hazardous parts, ingress of foreign objects and water from rain, sleet, snow, splashing, or hose directed water, & ice formation damage.
UL 50E standard applies to enclosures for electrical equipment intended to be installed and used in non-hazardous locations.
Lloyd's provides independent, third-party approval certificates attesting to a product's conformity with specific standards or specifications. It verifies the manufacturer's production quality systems through a combination of design reviews and type testing.
Requirement covers metal-enclosed, low-voltage power circuit breaker switchgear assemblies containing but not limited to low-voltage power circuit breakers, switches, control, instrumentation and metering, protective and regulating equipment.
An ABS assessment is the pre-approval of a product for use on a variety of ABS-classed ships following a technical evaluation. Ship designers, builders and owners can select the product to be placed aboard an ABS-classed vessel.
Sets the impact & flammability standards for polymer materials used in electrical equipment to 1500 volts. Plastic/polymer parts of an IR window must pass flammability tests at room temperature & remain intact during an impact test performed at zero degress Celsius or 32 degress Fahrenheit.
Arc Rating/Arc Testing
This range has been tested by several companies as a component fitted into their brand of switchgear:
IEE C37.20.7 Type 2B: 63kA, 15kV for 30 cycles at 60Hz
IEC 60298 Appendix A: 63kA, 15kV for 30 cycles at 60Hz
IEE C37.20.7 Type 2B: 50kA, 15kV for 30 cyles at 60Hz
IEE C37.20.7 Type 2B: 63kA, 15kV for 30 cycles at 60Hz
IEC 60262271-200: 63kA, 15kV for 30 cycles at 60Hz