ERICO TSG Series Surge Reduction Filters (TSG-RSF) - Manual (Page 23)

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Servicing & Trouble Shooting
7. SERVICING and TROUBLE
SHOOTING
HAZARDOUS VOLTAGES EXIST
WITHIN THE SRF ENCLOSURE. THE
SRF SHOULD ONLY BE SERVICED BY
QUALIFIED PERSONNEL, IN ACCOR-
DANCE WITH RELEVANT NATIONAL
ELECTRICAL AND SAFETY CODES.
Do not disconnect upstream earth or neutral
connections supplying the TSG-SRF while
power is applied to the unit, as this may
damage the TSG-SRF or load.
Only replace the primary TSG or secondary
TDS surge diverters with an identical type.
Voltage-free alarm contacts are activated
(after a three-second delay) should the
secondary protection status fall below a
pre-determined level.
Fault Checks
All indicators, alarms and surge counters
(where fitted) should be checked on a regular
basis.
Should any of the display indicators fail to
illuminate, check for the following conditions:
• Is power available to the TSG-SRF?
• Check the input voltage by measuring the
voltage between active and neutral.
• Has the line fuse blown or upstream circuit
breaker or fuse tripped?
Surge reduction filters of 1250A capacity and
above, have fuses installed in series with the
TSG primary surge protection.
If these fuses are open circuited for any
reason, or if the fuse ruptures, then the
primary surge protection is removed from
circuit.
• For SRFs utilising input fuses, spares of
the correct type and rating should be
held on site.
The TSG-SRFs are essentially maintenance
free, although periodic inspection is recom-
mended to ensure that the ventilation louvres
(where fitted) do not become clogged with
dust. In high humidity areas, dust should be
regularly vacuumed from the enclosures to
prevent the possibility of voltage tracking.
Indicators
If power is being supplied to the TSG-SRF and
the indicators still fail to illuminate, then it is
possible that either the primary TSG or
secondary TDS devices have exhausted their
surge capacity. In such circumstances, the
particular devices should be replaced as a
matter of urgency as they are no longer
providing optimum protection.
A single status indicator is provided on each
TSG surge diverter to indicate the surge
capacity of the primary TSG surge diverter(s).
When power is applied and full surge capaci-
ty is available, the status indicator will be illu-
minated. Should the indicator fail to
illuminate, the TSG should be replaced,
as optimum protection is no longer
provided. It should be noted that the status
indicator will not illuminate (regardless of TSG
surge capacity) if power is not available.
The TSG-SRF employs TD technology as the
secondary protection stage on both single
and three-phase models. The integrity and
surge capacity of this stage is indicated by a
two-segment LED display per phase, located
on the escutcheon panel of the TSG-SRF.
Should one or both of the secondary stage
LED indicators fail to illuminate
a reduction
in surge handling capacity has occurred.
In this event the affected surge diverter
module should be replaced.
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