Connection And Wiring Instructions; Phase, Neutral And Ground Connections; Connecting Form C Dry Contacts - Total Protection Solutions LowProfile 080 Operation Manual

CONNECTION ND WIRING INSTRUCTIONS
1. Phase, Neutral, and Ground Connections
NOTE: In order to connect the LowProfile unit, it will be necessary to remove the cover of the unit. Use care when removing
the cover, as there are wires, which run from components on the cover to inside the enclosure of the SPD. The monitor
board (located on the backside of the cover) has a cable harness which routes into the enclosure.
CAUTION: Prior to installation ensure the system configuration and voltage is equivalent to the LowProfile
!
unit being installed.
Following all applicable National Electrical Code standards as well as state and local codes, connect phase, neutral and
ground to LowProfile. If suppressor is being installed on a breaker, installation electrician should install device directly adja-
cent to the breaker feeding the device to insure conductor length is kept to a minimum. The 80ka and 120ka are supplied
with #10 AWG conductors permanently attached. should mounting conditions require extension of the supplied
conductor(s), installation electrician may use a butt-splice or parallel solder with shrink-tube insulation. In no event shall
the electrician use a wire nut to make the extension as this will result in loss of suppressor performance. Ensure that the
conductor lengths are kept as short and straight as possible. On all high-leg systems, the phase B conductor of the suppres-
sor (color-coded orange according to NEC) must be connected to the high-leg.

2. Connecting Form C Dry Contacts

All LowProfile units come standard with one set of Form "C" dry relay contacts for the SPD status. These contacts are for
connection to a user-provided remote alarm and monitoring circuit. The relay contacts are rated 65VDC/150VAC with maxi-
mum switching power of 30WDC/60VA AC. See Figure 5 for the form C contact configuration and terminal location on the
monitor board. The annotations on the diagram match the markings on the terminal block.
When input power is present on all phases, terminals "NO" and "COM" are an open circuit and terminals "NC" and "COM"
are a closed circuit. The contacts change state when the unit has encountered failure to one or more phases.
The installer must provide the appropriate raceway and wiring for the monitoring circuit, observing the restrictions and
conduit openings illustrated in an earlier section of this manual. The installer must route the monitoring conductors to
the terminal blocks on the lid-mounted main monitoring board. Route the wires to allow the lid to be opened and closed
properly. Tighten screws on terminals to 3.5 in-lbs (0.4 Nm). This terminal block will accept wire sizes #28AWG to #16AWG.
#18AWG to #20AWG is recommended.
6
Install SPD directly adjacent to the point of termination
to insure conductor length is as short as possible
for optimum performance and protection.
LOWPROFILE
™
InstaLLatIOn, OPERatIOn and MaIntEnancE ManuaL