Digilite® Dl500 Cabling Requirements; General; Mains Input Rating Label; Mains Wiring - Protec Digilite DL500 Installation And Commissioning Manual

7.0 Digilite® DL500 Cabling Requirements
7.1

General

All wiring associated with the system must conform to the current I.E.E Regulations, and cabling
must conform to the relevant BS specifications. ECA recommended cable separation for
electromagnetic compatibility in buildings must be followed.
Where screened cables are used it is important to ensure that screen continuity is maintained
between cable segments. Any screen wiring in the panel enclosure must be sleeved and securely
bonded to the earth points provided.
Ensure all wiring is kept as far as possible from any PCB's inside the Digilite® DL500.
7.2

Mains Input Rating Label

The mains rating label is located on the inner door of the Digilite® DL500 and should be consulted
before starting installation. The label details the working voltage, frequency, maximum current and
ambient temperature limits of the Digilite® DL500.
7.3

Mains Wiring

The Digilite® DL500 requires a mains supply exclusive to the panel that uses fixed three-core wiring
( between 0.75mm
Unauthorised operation of the mains supply must not be allowed and the fused spur should be
labelled " EMERGENCY LIGHTING CONTROL PANEL: DO NOT SWITCH OFF ".
Mains wiring must be segregated from all other system wiring.
The integral wiring clamp must be used to secure the incoming mains wires.
7.4

Addressable Loop Wiring and Devices

The Digilite® DL500 loop wiring carries both power and data to the loop devices. In order for the
system to operate correctly under all conditions the voltage drop along the loop must be kept within
specified limits.
The loop wiring must be wired from the panel terminals marked 'LA+ and LA-' round all the loop
devices and reconnected at the panel terminal marked 'LB+ and LB-' . See figure 7.0.
The total loop length must not exceed 1,5km, however the Voltage drop created by the cable
resistance must be taken into account in the system design and may mean, to achieve the required
loop length, that cable with larger cross sectional area must be used.
The Voltage drop on the loop is a function of both the resistance of the loop cabling
( determined by the gauge of cable and the length of the loop ) and the current that the loop must
carry ( determined by the number and type of loop devices connected ).
Consult section 14.0 for details regarding recommended cable types
Earth continuity must be preserved on broken segments of screened cable used
anywhere in the system installation ( cable screen and / or drain wire is classed as
earth ), and that the earth wiring does not touch any other connections, or any
other earthed points.
N93-582-01 Issue 1 NH
2 2
and 2.5mm ) which is fed from a double pole isolating fused spur, fused at 3A.
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