Arrester Protection; Line Connections - ABB OVR-15 Instruction, Operation And Maintenance Manual

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14 Line connections

for OVR-15 pole
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15 Line connections
for OVR-27 SVS pole/
OVR- 38 pole
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16 Line connections
for OVR-27 DVS pole
L L
I I N N E E C C O O N N N N E E C C T T I I O O N N S S
L L
I I N N E E C C O O N N N N E E C C T T I I O O N N S S
The recloser is connected in series with the line. The medium voltage line conductors are to be connected to the OVR terminal H1
& H2 via suitable terminal connector/clamp. Both these terminals are silver plated copper. The fasteners use for connectors must
The recloser is connected in series with the line. The medium voltage line conductors are to be connected to the OVR terminal H1
be torqued between 50 to 60 NM (442 to 531 inch lbf). Respective H1 and H2 terminals Line connections for OVR-15 and OVR-
& H2 via suitable terminal connector/clamp. Both these terminals are silver plated copper. The fasteners use for connectors must
27/38 are shown in the below pictures
be torqued between 50 to 60 NM (442 to 531 inch lbf). Respective H1 and H2 terminals Line connections for OVR-15 and OVR-
General convention proposed for power connection is H1 terminal should be on the source side and H2 on load side. However,
27/38 are shown in the below pictures
based on site requirements, these terminals can be connected in reverse order as well.
General convention proposed for power connection is H1 terminal should be on the source side and H2 on load side. However,
based on site requirements, these terminals can be connected in reverse order as well.
Plain terminal Dia. 1"
Fig-17.1: Line connections for OVR-27 SVS Pole / OVR- 38 Pole
I N S TA L L AT I O N

7.4 Arrester protection

Surge arresters can be connected on both high
voltage (source and load) sides of the recloser.
It is recommended that the arrester grounds be
connected to the recloser ground and continued
to the pole ground.
The leads connecting the arresters to the recloser
pole terminals should be as short as possible
to limit stray inductance and to maximize the
arresters' effectiveness.
Plain terminal Dia. 1"
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14
Fig-17: Line connections for OVR-15 Pole
Fig-17: Line connections for OVR-15 Pole
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15
7.5 Line connections
The recloser is connected in series with the line.
The medium voltage line conductors are to be
connected to the OVR terminals H1 and H2 via
suitable terminal connectors/clamps. Both these
terminals are silver-plated copper. The fasteners
use for connectors must be torqued between 50
to 60 NM (442 to 531 inch-lb). Respective H1 and H2
terminal line connections for OVR-15 and OVR-27/38
are shown in the figures below.
The general convention for power connection is H1
terminal on the source side and H2 terminal on the
load side. However, the terminals can be connected
in reverse order if site requirements dictate.
If a voltage transformer (PT) is used for providing
external AC auxiliary power to the LV cabinet, it is
recommended to connect the PT on the source side
of the recloser so that auxiliary power is available
even if the recloser is in open condition during
service. This will avoid unnecessary draining of
recloser battery backup power.
Plain terminal Dia. 1"
Plain terminal Dia. 1"
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16
Fig.-17.2: Line connections for OVR-27 DVS Pole
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