Amokabel Def Stan Cable

What is Def Stan?

Shortened from Defence Standard, it is a quality standard used to ensure a product meets the rigorous demands required for use in Defence Applications.  It is published on behalf of the Ministry of Defence (MOD) by UK Defence Standardization (DStan). 

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DEF STAN 02-526 Limited Fire Hazard (LFH) Cable

What is Def Stan 02-526

Formerly known as NES526, it is concerned with the manufacture and testing requirements of cable used in HM Surface Ships and Submarines.  More specifically for rubber insulated cables used in power, lighting, control and communications and instrumentation circuits.

What are the requirements to meet Def Stan 02-526?

Cables manufactured to Def Stan 02-256 must have dual extrusion insultation, have a halogen free inner layer and a Limited Fire Hazard (LFH) Def Stan 61-12 Part 31 outer layer.  They must be rated 440 Volts between cores and earth/screens and withstand up to 400 Hz.

What are they designed for?

Fluids such as fuel and lubricating oils, hydraulic fluids, and water can come into contact with these cables.  They can withstand temperatures ranging from -30 to +105 C, with the upper limit of prolonged usage at 90C.  The lower limit allows the cable to be used in Artic conditions.

How long will they last?

Under normal temperature conditions, they are expected to have a service life of 40,000 hours, approx. 4.5 years before the effects of thermal aging and deterioration reduces it efficacy and replacement is required.

DEF STAN 02-527 Fire Survival Cable

What is Def Stan 02-527

Building on the requirements for Def Stan cable 02-526, this cable has the same Low Fire Hazard qualities but is designed to resist fire for an extended period. Formerly known as NES 527.

What are the requirements to meet Def Stan 02-527?

Design requirements include an Elastomeric Sheath around silicone insulation, glass fibre braid, then either a Lacquered LFH or Silicone impregnated glass fibre taped core.

What are they designed for?

The cable is used in applications where the supply of power is critical.  If a fire does breakout, power should be retained in emergency systems such as lighting, life support, alarms and shutdown systems for as long as possible.

How long will they last?

They have been tested to ensure they can still perform at fire temperatures for up to 3 hours.

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