7
Installation manual 10679
Effective October 2017
BSPA Type 1 and Type 2 surge protective devices
Eaton.com/bussmannseries
Figure 11. Three-phase Wye (4W+G).
8. Operation
8.1 Power up and system checkout
Switch main panel power to
ON
and then switch BSPA’s branch
circuit breaker to
ON
. One LED should light for each phase voltage
being protected. Single-phase electrical systems will light only one
LED, split-phase systems light two LEDs, and three-phase systems
will light all three LEDs.
If the connected LEDs do not light, remove power, re-check
connections, and test again. If the LEDs still do not light, contact
your local authorized Bussmann series product distributor or
Bussmann series product representative, as the SPD may be
damaged.
8.2 LED color states
The LEDs located on the BSPA have three LED color states:
Green
– fully protected
Yellow
– loss of Neutral-to-Ground protection
Red
– loss of phase protection
If the electrical system is single-, split- or 3-phase, the BSPA will
have either one, two or three LEDs illuminated green, respectively.
Each LED will illuminate when its associated phase voltage is
present.
If any of these LEDs are yellow or red, a problem may exist with
incoming power, wiring, branch circuit breaker wiring or within the
BSPA itself. Disconnect power, check connections and test again. If
the LEDs are still yellow or red, disconnect power to the BSPA and
contact your local authorized Bussmann series product distributor
or Bussmann series product representative, as the SPD may be
damaged.
8.3 Options: audible alarm and Form C relay
Note
: Using Form C contacts is optional. Connection is not required
for the proper BSPA operation.
The audible alarm and Form C relay are tied to the phase LEDs on
the BSPA enclosure. If protection to one or more phases is lost, the
following will occur:
•
Single-, split- and 3-phase devices - If all voltage is lost to the
BSPA, the green LED(s) will go out, the alarm will not sound and
the relay will not be energized
•
Split- and 3-phase devices - If voltage to one phase is lost to the
BSPA, that one green LED will go out, the alarm will not sound
and the relay will stay energized (if there is another phase voltage
present)
•
3-phase Wye devices - If voltage to one or two phases is lost to
the BSPA, one or two green LEDs will go out, the alarm will not
sound and the relay will stay energized (if there is another phase
voltage present)
•
3-phase Delta – BSPA needs at least 2 phases to energize the
relay and to keep the alarm from sounding (if installed)
•
Single-, split- and 3-phase devices - If one or more LEDs turn red,
the alarm will sound and the relay will de-energize. To silence the
alarm, disconnect power to the BSPA and contact your authorized
Bussmann series product distributor or Bussmann series product
representative, as the SPD may be damaged.
Note
: Form C relay contacts are “fail safe” and only change state
when power is applied to the BSPA and the electrical system is
operating normally or when loss of protection is detected and yellow
or red LEDs are illuminated.
Figure 10. Three-phase Delta (3W+G).
