Fire Resistant Cables (NH Series)
Fire Resistant Cables (NH Series) are specifically engineered for mission-critical electrical circuits including fire suppression system power supplies, emergency lighting installations, backup power distribution systems, elevator control circuits, and alarm network infrastructure.
The specified Class A Fire Resistant Cable configuration is designed for demanding emergency circuits requiring prolonged circuit integrity during high-temperature fire exposure.
Typical project requirements may include:
Fire exposure temperature of approximately 950°C to 1000°C
Circuit integrity duration of up to 180 minutes
Stable conductor insulation during flame exposure
No short circuit or electrical breakdown within the specified test period
Continued operation of the connected emergency equipment
Optional resistance to water spray or mechanical impact when required by the project
The exact fire temperature, test duration, voltage applied during testing, cable support method, water exposure, and mechanical impact conditions must be confirmed according to the applicable test standard.
GB/T 19666 should be referenced together with the relevant product and fire-resistance test requirements stated in the project specification.
For more information please contact ISO Certified Cable Factory
