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Text artwork 990-9030 Rev. A. Equipment Handbook for the Low Voltage Disconnectors series Page 9 of 20
INSTALLATION
WARNINGS
(1) THIS APPARATUS MUST BE INSTALLED BY A PROFESSIONAL INSTALLER. WHEN INSTALLED, A
PROTECTIVE EARTH MUST BE PROVIDED FOR SAFETY, IN ACCORDANCE WITH BS6701: PART
1:1990: CLAUSE 6.10.
'WARNING: THE PROTECTIVE EARTH CONNECTION MUST BE HARD WIRED.'
(2) EXERCISE EXTREME CAUTION WHEN WORKING OR MAKING MEASUREMENTS WITHIN THE UNITS.
HIGH VALUE DC VOLTAGES MAY PRESENT A HAZARD OWING TO THE DANGER OF SHORT
CIRCUITS. RINGS, WATCHES AND JEWELLERY SHOULD BE REMOVED AND ONLY INSULATED
TOOLS SHOULD BE USED. A SOLDERING IRON SHOULD NOT BE USED UNLESS THE INPUT AND
OUTPUT HAVE FIRST BEEN ISOLATED.
(3) THESE UNITS USE POSITIVE EARTH. CAREFULLY OBSERVE THE CORRECT POLARITY WHEN
CONNECTING THE UNITS.
(4) LIVE WORKING MUST NOT BE CARRIED OUT ON THE UNITS UNLESS ABSOLUTELY NECESSARY. A
CERTIFICATE OF LIVE WORKING MUST BE OBTAINED BY THE PERSONNEL INVOLVED BEFORE ANY
LIVE WORKING IS COMMENCED.
(5) REFER TO MANUAL HANDLING, SECTION 8, BEFORE ATTEMPTING TO LIFT OR MOVE THE UNITS.
Stage 1 - Unpacking
4 Unpack the unit and check that the unit is present and undamaged and includes a handbook and
factory completed test certificate.
Stage 2 - Input connections
5 To connect the dc input cables to the unit, proceed as follows:
5.1 Mount the unit on a suitable wall using the mounting hole on each corner.
5.2 Ensure that the external power system intended for connection to the unit is switched off.
5.3 Open the door, remove five screws and washers on the plastic plate and lift off the plate.
5.4 Remove the circular plate from the bottom and feed the negative and auxiliary positive
common input cables from the external power system into the unit.
5.5 Connect the negative cable to either the internal negative input plate (for 15000218 and
15000248) or the external NEGATIVE IN busbar (for 15000264). Note that the unit does not
require a positive common input cable.
5.6 Connect the auxiliary positive common cable (to power the LVD PCA) to the AUX. terminal on
TB1 (terminal 3).
Stage 3 - Remote loop connections
6 If required, remove the link from the REMOTE LOOP terminals on TB1 (terminals 1 and 2) and make
connections to the terminals from a remote location.