3M LVI-3/x Hazardous Area Cable Joints (1402FR Resin) – Power Cables
Hazardous Area Cable Joints
For LV Power Cables
XLPE EPR PILC Cables 600V/1000V Up To 3.3kV
3M LVI-3/x hazardous area resin cable joint kits are designed to be used for multi-core, armoured polymeric, LV energy cables in hazardous areas – the cable joints are suitable for both wire braided (galvanised steel wire braid GSWB) and wire armoured (galvanised steel wire armour SWA) cables, including XLPE and PILC cables with lead sheath.
3M LVI-3/x hazardous area cable joints incorporate electrical insulation and mechanical protection and are compatible with both compression (crimp) connectors or mechanical shearbolt connectors for conductor jointing of copper or aluminium cores.
The cable joint shell and resin is flame retardant, hydrocarbon resistant and halogen free.
Jointing kits can be used for indoor and outdoor, underground direct burial and submerged applications in both hazardous area and non-hazardous area locations – straight and transition joints (jointing dissimilar cable insulation types) including EPR, XLPE and PILC cable are available where hydrocarbon resistance is required due to cable and joint exposure to aggressive flammable gases, vapour or liquids in the onshore and offshore oil, gas and petrochemical industry.
3M LVI-3/x Hazardous Area Cable Joints (1402FR Resin) features
- Scotchcast 1402FR resin in transparent 2 chamber bags with integrated Closed Mix system and opener for easy pouring
- Two part Mould Body with Snap Fit closing system for quick and easy handling
- Transparent flame retardant Mould Body for easy control of connector distances
- Flame retardant according to UL94 V0
- Chemical resistant, especially against hydro carbons
- Spacer web to ensure the distance between connectors and the Mould Body
- Closure cap to prevent any pollution
Hydrocarbon Resistant Resin
Due to their chemical formulation, Cold Pour Electrical Scotchcast resins can decay in the presence of hydrocarbons or chemical solvents.
The polymer chain “backbone” of the cable jointing resin is attacked and, once broken by hydrocarbon or chemical solvents, the resin will revert back to its original liquid components. 3M Electrical test results show how different resin types are affected when immersed in either petrol/diesel or a highly aggressive combination of chemical solvents. Rapid deterioration is most clearly pronounced in low cost, standard polyurethane (PUR) resin. Epoxy resins offer better performance over these low cost cable jointing resins, but can also be adversely affected when exposed to some of the test liquids.
3M 1402FR high quality, highly modified polyurethane resin, demonstrates superior performance above all the other resin types – 1402FR resin is supplied in the range of 3M hazardous area cable joints covering instrumentation, control cables and power cables rated up to 3.3kV.
➡ Read our Blog for further information about the selection and specification of cable joints according to the ATEX Directive.
3m Cable Joint description – LVI-3/X
3M Scotchcast LVI-3/X resin inline or straight cable joint kits are supplied with a one part translucent mould body for simple and easy handling. Distances inside the cable joint body can be checked easily.
All necessary dimensions, including kit application range, cable preparation are given in the detailed jointing instruction.
The two foam sealing elements can be adapted to the required cable diameter by removing the pre-cut adapter rings.
Scotchcast resin 1402FR is delivered in a two chamber bag with integrated spout and aluminium Guard Bag for protection of the resin against humidity.
The re-openable seam and integrated spout with a membrane provides a 3M Closed, Mixing and Pouring (pictured) cable jointing system. After the seam of the two chamber bag is opened, the Scotchcast resin components can be mixed.
To pour the resin into the mould body, the spout is connected with the dome by turning 180°.
While turning, the membrane is cut open to pour the resin. The 3M Closed Mixing and Pouring System provides resin handling without any skin contact – for protection against pollution, a closure cap is applied onto the dome. After curing, the remaining joint resin in the bag can be disposed as household waste.
3M LVI-3/x Hazardous Area Cable Joints (1402FR Resin) – Power Cables
|CSA (sqmm)||3M LVI-3/X-C Kit Reference|
|1 Core 1kV||2 Core 1kV||3 Core 1kV||4 Core 1kV||1 Core 3.3kV||3 Core 3.3kV|
3M LVI-3/x Hazardous Area Cable Joints Dimensions
The following table enables the selection and specification of hazardous area cable joints according to the 3M Scotchcast LVI3 range: cable joints are suitable for both air installation locations in potentially explosive atmospheres with flammable gases/vapours or direct burial in underground cable trench with hydrocarbon contaminated soils and ground conditions.
|3M LVI-3/X Kit Size||Size 2||Size 3||Size 4||Size 5||Size 6||Size 7||Size 8|
|3M LVI-3/X Kit Part Number||LVI-3/2-C||LVI-3/3-C||LVI-3/4||LVI-3/5||LVI-3/6||LVI-3/7||LVI-3/8|
|Dimension A (mm)||8||14||28||45||48||60||55|
|Dimension B (mm)||28||32||51||70||86||83||85|
|Dimension C (mm)||36||49||69||105||126||140||140|
|Dimension D (mm)||190||276||400||580||700||890||1210|
3M LVI-3/x Scotchcast resin cable joints are tested according to EN50393.
|Type of Test According To EN50393 Table 3 / I / A1||Results|
|AC Voltage Withstand Test In Air 4kV AC / 1 min||Passed|
|Insulation Resistance Test In Air 1kV DC||> 10,000MΩ|
|Heat Cycle In Air 63 Cycles: 5h/3h||Passed|
|Heat Cycle In Water 63 Cycles: 5h/3h||Passed|
|AC Voltage Withstand Test In Water 4kV AC / 1 min||Passed|
|Insulation Resistance Test In Water 1kV DC||> 10,000MΩ|
3M Scotchcast 1402FR Resin
Scotchcast 1402FR resin is in compliance with EU regulation 1907/2007/EC (REACH) and has a shelf life of at least 36 months when stored between 10°C and 40°C with a humidity level < 75 % in the originally sealed bag.
The expiration date of each product appears on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, it is the responsibility of the user to determine applicability of the resin.
Please note: Scotchcast LVI-3/7 and LVI-3/8 cable joints will have a shelf life of 12 months as they use a higher volume of resin with different packaging to the smaller cable joint kits.
Complete range of Scotchcast Resins are available to protect and encapsulate cable joints operating at LV MV HV including zero halogen, fire resistant, hydrocarbon resistant and seawater resistant types.
Fire Resistant Cables
Thorne & Derrick International have supplied 3M Scotchcast Resin Cable Joints utilising Scotchcast 1402FR resin to joint Prysmian FP600S cables at the Birmingham New Street Development Project for Network Rail.
The 3M Scotchcast Resin Joints type LVI3/8 were supplied to cable joint Prysmian FP600S 4 core 300sqmm cables – the cable joints were supplied complete with mechanical shearbolt connectors to enable fast and easier cable jointing of sectoral conductors without resort to crimping tools and die sets.
FP600S manufactured by Prysmian is the ultimate fire resistant, armoured cable for power and control of emergency, life safety and fighting systems. FP600S has been developed to meet the highest possible level of fire resistance for this cable type. FP600S also meets or exceeds low fire hazard requirements of LSOH cable.
3M LVI-3 cable joint kits should be installed in temperatures above freezing point to ensure that the Scotchcast resin is properly mixed and cured (the resin can be warmed by the cable jointer in a vehicle if required). Once installed the cable joints are stable at lower temperatures down to -40°C.