3M 91-NBA Scotchcast Resin Cable Joints (470W Resin) – Unarmoured Cables

cABLE JOINTS FOR LV POWER CABLES

3M 91-NBA Scotchcast resin cable joint kits are designed to be used for 1-core up to 5-core non shielded polymeric low voltage unarmoured energy cables.

3M 91-NBA Scotchcast cable joints incorporate electrical insulation and mechanical protection and are compatible with both compression connectors (crimp) or mechanical shearbolt connectors for conductor jointing of copper or aluminium cores.

Jointing kits can be used for indoor and outdoor, underground direct burial and submerged applications in non-hazardous area locations – straight and transition joints (jointing dissimilar cable insulation types) including EPR, XLPE and PILC cable are available.

3M Scotchcast hazardous area cable joints are available for jointing power, pilot and instrumentation cables in Zone 1 and Zone 2 potentially explosive atmospheres – a complete range of cable joints utilising Cold Shrink technology are available for safe installation in hazardous area workplaces (HAZLOC).

Resin cable joints suitable for Unarmoured Power Cables including NYY type for power and control wiring where mechanical protection is not required. When NYY cables are required to comply with the UK wiring regulations BS7671 for burial in the ground, they require installation in a conduit or cable duct to provide protection against mechanical damage.

3M 91-NBA Scotchcast Resin Cable Joints (470W Resin) features

Scotchcast resin 470W in transparent two chamber bags with integrated 3M Closed Mixing and Pouring (CMP) system
One part translucent cable joint mould body/shell with snap-fit closing system for quick and easy handling of jointing resin
Pre-cut foam cable sealing elements to provide reliable sealing to the 3M mould body without tooling for all cable application diameters
Closure cap to prevent pollution
Cable joints rated up to 3.3kV unscreened cables with kit modifications
Scotch 23 self-amalgamating electrical tape included
Armour earth connection component kits for steel wire armoured/braided cables
Cable connectors included (joint kit sizes 2 and 3 only)
Detailed cable joint installation instruction

3M Cable Joint

3m Cable Joint description – 91-NBA

Scotchcast Joints – Safe & Reliable Resins

3M Scotchcast 91-NBA 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 470W 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 Scotchcast Joints – resin cable joints for power, control and instrumentation cables in industrial and hazardous area Zone 1 and Zone 2.

3M 91-NBA Scotchcast Cable Joint Selection – Unarmoured Cables

Resin Cable Joint Application Range mm²
Body Size							Diameter ∅ mm
Body Size	4 x	5 x	4 x	5 x	4 x	5 x	Diameter ∅ mm
91-NBA 0	1.5 – 4	1.5 – 2.5	–	–	–	–	4 – 16
91-NBA 1	1.5 – 10	1.5 – 6	–	–	1.5 – 6	–	10 – 22
91-NBA 2	6 – 16	2.5 – 10	–	–	–	–	12 – 25
91-NBA 3	16 – 25	6 – 16	–	–	6 – 46	1.5 – 6	13 – 32
91-NBA 4	25 – 50	16 – 35	16 – 35	16 – 25		10 – 16	18 – 36
91-NBA 5	50 – 95	25 – 50	35 – 70	25 – 50	16 – 35	–	19 – 45
91-NBA 6	70 – 120	–	70 – 120	–	50 – 70	25 – 35	27 – 54
91-NBA 7	120 – 240	–	95 – 240	–	95 – 185	35 – 50	29 – 64

3M 91-NBA Scotchcast Low Voltage Resin Joint Shell Dimensions

The following table enables the selection of 3M Scotchcast resin cable joints from the 91-NBA range for the connection and jointing of unarmoured cables – cable joints are suitable for location onto cable containment in air and direct burial into underground cable trench.

3M Scotchcast Order Code	3M Scotchcast Resin Cable Joint Body Dimensions								Min – Max Accepted Cable Diameter (mm)
3M Scotchcast Order Code	Li (mm)	L (mm)	Ø ID (mm)	Hs (mm)	H (mm)	B (mm)	D (mm)	E (mm)	Min – Max Accepted Cable Diameter (mm)
3M 91-NBA0	114	148	32	65	45	102	32	50	4-16
3M 91-NBA1	144	178	36	69	48	115	40	64	10-22
3M 91-NBA2	192	230	38	71	48	120	48	96	12-25
3M 91-NBA3	222	270	55	85	56	148	55	112	13-32
3M 91-NBA4	270	319	63	100	64	180	61	148	18-36
3M 91-NBA5	324	369	76	115	70	211	72	180	19-45
3M 91-NBA6	433	479	101	144	83	272	104	225	27-54
3M 91-NBA7	556	643	130	177	100	349	126	304	29-64
3M 91-NBA8	790	890	140	206	TBA	TBA	TBA	TBA	60-90
Image Dimensions

3M 91-NBA 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 470W Resin

Scotchcast 470W resin is in compliance with EU regulation 1907/2007/EC (REACH) and has a shelf life of at least 36 months when stored between 15°C and 35°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.

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.