AUXILIARY EQUIPMENT
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7-17
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
The PSO Insulated Joint Bypass Coupler (Tuned), 7A422-f, passes a specific GCE frequency
around an insulated joint in the non-electrified territory.
The coupler assembly consists of a tubular PVC plastic enclosure with mounting brackets at the
base. There are four AREMA binding posts on the top of the assembly that provide connections
to the circuits housed within the sealed unit (see Figure 7-13.
7.3.6.2 Mounting Dimensions, 7A422-f
Mounting Dimensions for the PSO Insulated Joint Bypass Coupler (Tuned), 7A422-f are as
follows:
Diameter:
3.5 inches (8.89 centimeters) O.D. in diameter
9.75 inches (24.77 centimeters) in height (to top of AREMA binding posts)
Weight:
5 pounds (2.27 kilograms) (approximate)
Generally, the distance from the weatherproof enclosure enclosing the Tuned Joint Coupler,
7A422-f to the rails should not exceed 25 ft. (7.62 m).
The track wire connecting the Tuned Joint Coupler, 7A422-f to the rails should be #6 AWG.
7.3.6.3 Application Installation, 7A422-f
Application installation of the Tuned Joint Coupler 7A422-f is as described in Section 4.5.4 and
as depicted in Figure 7-14. The coupler terminals are connected as follows:
Terminal A connects to Rail 1 on the east side of the insulated joint
Terminal B connects to Rail 2 on the east side of the insulated joint
Terminal C connects to Rail 2 on the west side of the insulated joint
Terminal D connects to Rail 1 on the west side of the insulated joint
Figure 7-14 Typical 7A422-f Tuned Joint Bypass Coupler Application