We offer complete, building block Style C or AC/DC circuit systems to for switch fouling, OS and highway crossing warning uses. Building blocks include an AC Signal Source Unit and a Track Power Unit the feed the terminating Track Diode. Use of this concept, which operates on 8 to 15VDC, provides a circuiting solution that will continue to operate after commercial power has failed, as long as the stand-by battery has the capacity to power it. Our use of a true square-wave AC signal creates optimum shunting characteristics for the track circuits. Because of the very high voltage spikes that are generated by the square wave signal, shunting characteristics are superior to DC and even AC sine-wave signals.
Typical crossing warning applications include Island-Only and Three Track Circuit configurations. Style “C”, AC/DC Track Circuits address several problems that relate specifically to Fouling (Figure 1) and OS Circuits (Figure 2) Circuits. These problems and solutions include:
An Application Guide, complete with specifications of the circuit components is available from S&C Distribution Company covering Crossing Warning, Switch Fouling and OS Circuit use of the Style “C” concept.
|AC Source Unit
|Track Power Unit
|Circuit Terminating Track Diode
|40 Volt Surge Protecting Network for 215A-10 and associated 215B-2
|Circuit Panel for a single track circuit for rack or backboard mounting, less Surge Network, for use as an Island Crossing Warning Circuit, a Fouling Circuit or an OS Circuit
|Circuit Panel, above but with 215A-18 Surge Network built-in
Track Resistor Kit, 0.5 Ohm Relay Ordering Ref: 215A-RK1
Track Resistor Kit, 2.0 Ohm Relay Ordering Ref: 215A-RK2
Track Resistor Kit, 4.0 Ohm Relay Ordering Ref: 215A-RK3