Track Circuit Capacitors
API’s customised track circuit capacitors are used in a wide range of industries including Transportation, Marine, Automotive, Aerospace, Military, Medical, Renewable Energy, and Power Distribution.
Track Circuit Capacitors
Ideal for track-side signalling equipment
API Capacitors offer a range of low frequency AC adjustable track circuit feed/relay end capacitors and high frequency DC fixed capacitors for jointless track circuits used in track-side signalling equipment.
API’s capacitors feature long life and high reliability, achieved for both variants using ultra low defect density, high isotactic, metallised polypropylene dielectric film with self-healing capability. Low frequency AC adjustable track circuit feed/relay end capacitors are manufactured with multiple capacitive sections that can be switched using locking metal switches to match the track circuit conditions.
Resistors are incorporated into the design to protect against transient peak currents. Capacitive elements are hermetically sealed within polyurethane resin and enclosed in an IP67 rated insulated case. High frequency DC fixed capacitors for jointless track circuits are manufactured to less than 1% tolerance and incorporate a dielectric system that ensures capacitance stability across a wide temperature range.
Capacitive elements are hermetically sealed within polyurethane resin and enclosed in an aluminium case.
Download Track Circuit Capacitors Datasheet
Features
- Long life and high reliability
- Self-healing technology
- Dry leak free designs
- Insulated cases
- UV resistance, halogen free, low smoke and flame retardant materials
Typical Applications
API’s track circuit capacitors are used in Transportation applications.
- Passenger/Freight Rail (Traction, Signalling)
Typical Characteristics
| Rated Capacitance (C): | 1 to 200μF |
| Peak Repetitive Voltage (UNDC/UN): | 160 to 1200V |
| Continuous RMS Current (Imax): | 0.5 to 40Arms |
| Frequency (fp): | 25 to 6,000 Hz |
| Ambient Temperature (0amb): | -40 to +70°C |
| Case Materials: | Aluminium and Insulated Materials |
| Termination: | Threaded M6 (1BA option) Brass Nickel Plated, Copper Braid Tin Plated |
| Related Standards: | BS EN 61071 and Other Related Rail Standards |
Custom Designed Capacitors
API’s capacitors can be designed to meet the most complex specifications. Our technical teams can work closely with your design team at concept stage or at the later stages of a project when a time critical design is needed. Alternatively like for-like replacements for older retro-fit designs can be offered.
Looking for Custom Designed Track Circuit Capacitors?
We work with API Capacitors to offer custom solutions and custom designed capacitors for our customers. We work collaboratively with you to keep your project on time and in budget.
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