FiloSeal+HD – Product Specification

FILOSEAL +HD

Duct Seals

Filoform FiloSeal +HD is a duct sealing system that is able to seal large heavy armoured power (multicore XLPE SWA) and high voltage cables in ducts, bore holes or transit frames – providing a strong support system using hexagonal tubes building a re-enterable seal with honeycomb structure.

FiloSeal+HD cable duct seals are suitable for sealing any cable configuration or pipes contained in one duct and also allows easy re-entry of the seal to add or remove cables or pipes as required.

The cable duct seal kits have been extensively tested against pressure, pulling forces, chemicals, gases and hydrocarbons for adequate sealing of LV-HV cables against the danger of flood (water ingress) or gas migration.

UK DNO Approvals & Track Record

The Filoseal+HD system is in service and approved at electric utilities in the UK including: SPEN (Scottish Power Energy Networks), WPD (Western Power Distribution), NPG (Northern Power Grid), SSE (Scottish & Southern Energy) and various National Grid location substations up to 400kV.

WIMES Approved

WIMES Approved Water Industry Mechanical & Electrical Specifications

FiloSeal+HD cable duct sealing system is WIMES Compliant (3.02 Clause, 7.4.3.2d) and approved for use by UK Water Utilities including Northern Ireland Water, Thames Water, Anglian Water, Severn Trent Water, South West Water, United Utilities and Welsh Water.

Operating Temperature

Filoseal+ products have an operating temperature of -40°C to +120°C.

Filoform FiloSeal+HD

Sealing Cable Ducts Against Gas & Water

The cable duct seal provides gas (including methane and chlorine) and water tightness for cable ducts up to 250mm outside diameter with fire resistant option available – the test report confirms a gas and watertight seal for 1 bar (48 hours – 10 metres of water) and 2 bar (20 metres of water).

Re-enterable cable sealing system is easy to apply regardless of the type of cable configuration in the cable ducts as it uses strong, but flexible hexagonal tubes to support the cable and provide a strong backing for the seal – typically used to seal medium and high voltage substation cable ducts providing 11kV-33kV power supply.

IP67 Sealing

Filoseal+ has been Tested to 1 bar over 48 hours (equivalent to 10 metres of water).

Filoseal+HD & Filoseal+HD FIRE has been Tested to 2 bar over 48 hours (equivalent to 20 metres of water).

IP67 = a unit/object can be dropped into a body of water up to one metre deep for half an hour. The IP Code, IEC Standard IEC60529, classifies and rates the degree of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact and water. Formally cable duct seals and sealing systems are not categorised as objects per se as mentioned above. However, based on the description above, Filoform declares that their Filoseal+ and Filoseal+HD systems exceed IP67 waterproof ratings provided they have been installed correctly and according to their instructions.

Hydrogen Sulfide Gas

The duct sealing compound has been tested specifically for resistance and stability performance under exposure to hydrogen sulfide (H2S) gas to establish suitability for sealing cables installed in waste water treatment sites – following rigorous testing involving seal exposure to 200ppm concentration of H2S gas over a 120 hour (5 day period) the duct seal showed “No Change” to weight, dimensions, shore hardness or visual inspection.

Filoform Part Ref	Cable Duct Seal Description	Maximum Duct Diameter (mm)	Order Unit
280010	FiloSeal+HD – 75mm > 110mm	Ø 110 max.	per piece
280020	FiloSeal+HD – 125mm > 160mm	Ø 160 max.	per piece
280030	FiloSeal+HD – 180mm	Ø 180 max.	per piece
280040	FiloSeal+HD – 200mm	Ø 200 max.	per piece
280050	FiloSeal+HD – 225mm	Ø 225 max.	per piece
280060	FiloSeal+HD – 250mm	Ø 250 max.	per piece

Sealing Cables & The ATEX Directive

Cable duct seals are exempt from the requirement to certify for installation in hazardous area locations including Zone 1 & Zone 2 according to the ATEX Directive – the seals are classed as “non-sparking” and not capable of causing a source of ignition in potentially explosive atmospheres.

The following table summarises the results from the Test Report – please note the test results contained have been achieved in accordance with Filoform installation instructions and if not followed field results can vary. Size, material and cable volume of the duct all influence the duct seal performance.

Duct Seal Test Description	Measurement	Result	Pass Or Fail
Pressure	2.0 Bar	1.0 Bar Long Term, 2 Bar Short Term	Passed
Pulling Force	100kg	100kg – 1000 Newtons	Passed
Bend Test	10xd at 45º	10xd At 45º, With 1 Bar Pressure	Passed
Chlorine Gas	100% for 7 Days	Slight Change On Colour and Texture	Passed
Methane Gas	100% for 7 Days	Slight Change On Colour and Texture	Passed
Diesel	100% for 2 Years	Hardly Any Change	Passed
Petrol / Benzene	100% for 2 Years	Hardly Any Change	Passed
Ethanol	100% for 42 Days	Hardly Any Change	Passed
AD Blue	100% for 21 Days	No Change	Passed
ASTM Oil	100% for 2 Years	Hardly Any Change	Passed
Hydrogen Sulphide (H2S)	200ppm for 5 Days	Hardly Any Change	Passed