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Pre-installation requirements
6
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Installation
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3. Wire routing (OEM)
The length of wiring to the SPD must be kept at a minimum.
For the best performance, ABB recommends maintaining
36" of length or less for each conductor (including neutral
and/or ground). Wire lengths should be short, straight runs
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between the SPD and power source. Wiring impedance can
be further reduced by twisting the phase, neutral and
ground conductors together and routing them in the same
raceway or channel. Always avoid sharp bends when routing
SPD connecting conductors.
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4. Circuit breaker (OEM)
A dedicated circuit breaker is not required for TPME or
TPHE models. If a dedicated branch breaker is to be used
to connect the SPD to the power system, ABB recommends
a 60 A or higher rated breaker.
5. Remote alarm contacts
Remote alarm monitoring contacts are provided on all
SPD model types covered by this manual. If this type of
monitoring is desired, refer to the following diagram for
the location and pin configuration of these contacts. The
contacts are dry, form C type, rated 120 V AC, 1 A (30 V DC,
2 A) maximum. Once the SPD has been energized and is
operating as intended, the alarm contacts will switch to
"normal status." The contacts will only change back to
"alarm status" if there is a failure within the SPD
suppression circuitry, or if power has been disconnected
from the SPD. Allowing the remote alarm contacts remain
unconnected will not affect the performance or integrity
of the SPD.
6. SPD disconnect switch
Not provided on NSBX or NSWM models.
7. Pre-energization check
Once all of the pre-installation conditions have been met
and the SPD has been installed, the SPD can now be
energized. For SPD operational status, refer to Operation
and Maintenance sections.
T P M E A N D T P H E N S B X A N D N S W M S E R I E S I N T E G R A L S P D S
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Power terminals and remote alarm locations
Phase A/line 1
Phase B/line 2
Phase C/line 3
Normal status indication:
NO - COM = Closed
NC - COM = Open
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The illustration above represents the SPD in a vertical orientation. Other orientations
are possible depending on the type of equipment in which the SPD is installed. The
SPD features will be the same regardless of application.
NOTICE
Hi-Leg Delta power systems:
TPME240H and TPHE240H SPD model types are intended for
Hi-Leg Delta systems and are configured with Phase B as the
intended Hi-Leg connection point. Attempting to connect the
SPD Phase C or Phase A conductor to the system Hi-Leg will
result in immediate SPD failure.
Ground
Neutral
Alarm status indication:
NO - COM = Open
NC - COM = Closed
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