What is BS EN 60695-1-40 – Fire hazard testing about?
BS EN 60695-1-40 is an international standard that discusses insulating liquids for fire hazard testing. Insulating liquid plays an important role in the life span of the transformer. Petroleum-based mineral oil has become the dominant insulating liquid of a transformer for more than a century for its excellent dielectric and cooling properties.
BS EN 60695-1-40 provides guidance on the minimization of fire hazards arising from the use of electrical insulating liquids, with respect to:
- Electrotechnical equipment and systems
- People, building structures and their contents.
Who is BS EN 60695-1-40 – Fire hazard testing for?
BS EN 60695-1-40 on insulating liquids applies to:
- Chemical engineer
- Laboratory testing
Why should you use BS EN 60695-1-40 – Fire hazard testing?
Insulating liquid plays an important role in the life span of the transformer. Petroleum-based mineral oil has become the dominant insulating liquid of a transformer for more than a century for its excellent dielectric and cooling properties.
BS EN 60695-1-40 provides various types of electrotechnical equipment containing insulating liquids that are:
- Transformers and reactors
- Capacitors
- Cables
- Bushings
- Switchgear, and
- Miscellaneous power electronics
As a user of BS EN 60695-1-40, you can ensure various types of protective measures against fire such as:
- The retention of the insulating liquid within the electrotechnical equipment, allowing for thermal expansion in service
- Provision to retain any liquid released, using a sump or bund
- Ensuring that there is a sufficient distance to the nearest building (for outdoor installations)
- The use of fire barriers or fire compartments
- Provision of a fire extinguisher or extinguishers actuated by excess temperature rise
- Provision of a circuit breaker or breakers actuated by pressure relief valves
- Provision of over-current protection and
- Provision of fast-acting short-circuits protection.
