S&C Omni-Rupter, Руководство по установке

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20 S&C Instruction Sheet 765-500
Installation
Step 19
The Omni-Rupter terminal pads are silver plated
and do not require abrasive cleaning as a part
of their preparation. Wipe any dirt or grease
from the surface, and apply a thick coating of
Penetrox A
® or other appropriate conductor
preparation compound. DO NOT wire-brush
the terminal pads. Wire brushing may scratch
the plating.
Step 20
When high-voltage conductors are to be con-
nected using aluminum-alloy connectors

, the
following procedures should be employed:
a. Thoroughly wire-brush the current-transfer
surfaces of each connector and immediately
apply a liberal coating of Penetrox A (avail-
able from Burndy Corporation) or another
appropriate conductor preparation com-
pound to the brushed surfaces.
b. Prepare the conductors using established
procedures and clamp them in their respec-
tive connectors.
For other types of connector, follow the
manufacturer’s recommended preparation
procedure before connecting to Omni-Rupter
terminal pads.
Ç
CAUTION
DO NOT
apply excessive load to the termi-
nal pads.
The jumper connections should be in-line
with and level to the terminal pad bolt holes
before securing the jumper fasteners to the
terminal pad. Large pull-off forces may mis-
align the blades with the stationary contacts
or prevent proper closing.
Misaligned contacts may overheat
causing arcing and damage to the
switch. Injury to operating personnel
may result.
Step 21
Attach the jumper connectors to their respec-
tive terminal pads using flexible-conductor
connections. When attaching connectors to
the Omni-Rupter terminal pads, the connectors
should be parallel to the terminal pad. Attach
and form the conductors so that no significant
loading pressure is applied to the terminal pads.
See Figure 19.
a
“Mass anode” type connectors, such as the Catalog
Number 5300 series offered by S&C, which have been
designated by the connector manufacturer as being suit-
able for direct attachment to copper alloy terminal pads .
Conductor
Terminal pad
Connector
Figure 19. Connect jumper connector parallel to terminal pad.