Wieland Electric - Modular Wiring Specification/BS 61535

Modular Wiring: Typical Specification - Component Schedules - Performance Ratings/Criteria

Typical Modular Wiring Specification:

Armoured & Unarmoured Systems

General:
The contractor shall install a modular wiring system for distribution of lighting and power within the ceiling void.

System: Armoured
The modular wiring system generally comprises of cable assemblies and steel enclosures. All internal wiring generally will be 2.5mm² and 4.0mm² LSOH singles (6491B). The modular wiring system generally is rated 230V/16A or 20A. The modular wiring system offers a high degree of mechanical protection through the use of steel enclosures and cable assemblies comprising metal flexible conduit and die-cast connector housings.

System: Unarmoured
The modular wiring system shall comprise of LSOH flexible cable assemblies, steel enclosures (MDBs) and polyamide enclosures. The modular wiring system is rated at 230V/16A.

Connector System:
The connector system used throughout the entire modular wiring system shall incorporate a connector system manufactured and tested in accordance with BS 61535 - Installation Couplers Intended for Permanent Connection. Connectors shall be 3, 4, 5 or 6 pole type and have fully shrouded female (live) pins.

System Components:
The principal components of the modular wiring system shall be as follows:

• Home Run Cable
• Fused Connection Unit (FCU)
• T Connector
• Cable Assembly
• Main Distribution Box (MDB)
• Switch Connector

Home Run Cables:
Home run cables generally comprise of LSOH SWA 2.5mm² multicore type up to 4.0mm² & 6.0mm² LSOH singles (number dependant on number of circuits) in metal flexible conduit (up to 40mm diameter) complete with gland and lock-nut. If the modular wiring system is to be integrated with a lighting control system the home run cable will generally comprise of a Belden type 8719 fieldbus cable.

Main Distribution Boxes (MDBs):
MDBs generally comprise of a solid steel enclosure with a removable lid and provision for earthing. Output ports shall be positioned around perimeter of the MDB. The MDB shall incorporate a suitably sized DIN rail mounted terminal for connection of the home run cable and internal wiring to the output ports.

Cable Assemblies: Armoured
Cable assemblies generally comprise up to 4.0mm² LSOH singles in a metal flexible conduit (16 mm diameter) and pre-wired male and/or female connector and/or gland and lock-nut.

Cable Assemblies: Unarmoured
Cable assemblies generally comprise LSOH multicore flexible cable and pre-wired male and/or female connectors.

T Connector: Armoured
The T connector generally comprise of die-cast connector housings, male and female connectors (6 pole) and tails or flexible drop lead for connection to luminaires/lighting control module (LCM)/fan coil unit (FCU)/variable air volume unit (VAV).

T Connector: Unarmoured
T Connectors generally comprise of polyamide connector housings, male and female “snap-fit” connectors (3, 4 5 or 6 pole) and tails or flexible drop lead for connection to luminaire/lighting control module (LCM)/fan coil unit (FCU)/variable air volume unit (VAV).

Switch Connector: Armoured
Switch connectors generally comprise of die-cast connector housings, male and female connectors and pre-wired flexible switch drop or facility for plug-in switch lead.

Switch Connector: Unarmoured
Switch connectors generally comprise of polyamide connector housings, male and female connectors (3, 4, 5 or 6 pole) and pre-wired flexible switch drop or facility for plug-in switch lead.

Fused Connection Unit (FCU):
Fused connection units (for connection to fan-coils or similar loads) shall comprise of a steel enclosure with removable lid, a suitably rated switch and fuse (or combined) and suitable provision for earthing.

RST Specification IP66/IP68

Temperature Range:
- 40°C to + 100°C

Material:
Contact parts: brass. Surface-plated housing parts: thermoplastic material PA 66, halogen- free, V2 sealing material: NBR.

Regulations:
DIN VDE 0606 T200, DIN EN61984 (VDE 627), VDE 0110 IEC 60999: UL 2238: CSA: C22.2 No. 182.2-M1987 LR Type Approval System.

Approvals:
Pending
VDE; UL; CSA; LR; GL; DNV.

Degree of Protection:
IP 65, IP66, IP67 and IP 68 (3m; 2 hours).

Glow-wire Test
850°C, 30s:
For connectors, distribution units, cable assemblies and appliance couplers.

Coding:
Mechanical coding symbolised by colour code.
Grey and black with the same mechanical coding. Other codings are optional.

Note:
Protection against shock generally guaranteed even when disconnected.
Protective conductor leading. Connection to the live cable must be with a female connector according to the regulations. It is therefore not possible to have a ring circuit arrangement.
Only pluggable in the correct pole configuration: 1 pole cannot be connected.
Contacts protected against strain on the cable. All components can be interlocked.
DIN VDE 0606-200 requires the use of a locking device. Dangerous mismating with installation connector systems of other suppliers is not automatically excluded by compliance with DIN VDE 0606 T200.
Installation connectors do not replace national connector/outlet systems for home applications.