Third Rail Inverter- Subway

Third Rail Transportation Maintenance Inverter

from 3KVA to 150KVA

Third Rail Inverter Provides Clean Power

Provides Clean Power

PCTI’s portable third rail inverter is powered directly from the 600VDC third rail to provide clean power for track tools. The unique software capabilities of the digital signal processor (DSP) control allow for universal input. Thus, the inverter can take the typically dirty power within a wide range from 300V to 700VDC and convert it to clean sine wave power capable of powering the most sensitive electronic equipment. The power provided by PCTI’s Third Rail inverter is better than that provided by many power companies.

Third Rail Inverter Standard Safety Features

Safety Comes Standard

Standard are a number of protective features that protects maintenance personnel and also protects the inverter from damage caused by a variety of conditions including input polarity reversal. A complete dead front design with no metal parts on the exterior to provide maximum protection to maintenance personnel. The light weight fiberglass enclosure allows for easy transportation of the inverter. The inverter is the lightest available on the market today: the 3.5KVA inverter weighs only 42 lbs and can power a 4 1/2HP compressor.

Third Rail Inverter Clamps and Cables

Optional Features

The clamps and cables for the third rail portable inverters are optional items sold separately from the inverter. The red clamp is for the positive 600VDC third rail. It connects on the base underneath the rail. The black is attached to the negative return rail. 

PCTI Third Rail Inverter Solutions

The inverter can be used to run track tools for moving maintenance or permanent installations such as car signals. The inverter may also be used to power the same when local power goes down.

If you need help in specifying your inverter needs, contact PCTIrequest a quote, or download our third rail inverter brochure.

Voltage Range:
• 300-700VDC
• 15ADC (for input voltage 300VDC)
Nominal Voltage:
• 700VDC
• 50microseconds at 3000V
• 50milliseconds at 2000V

Voltage :
• 120VAC + 0.5%
Voltage Regulation:
• 0.5% (for any line and load combination)
• 30A RMS continuous
Peak Current:
• 100A (2 sec)
Starting Current:
75ARMS (5 sec)
Response Time:
• 50mseconds (no load to full load)
Sine Wave Generation:
THD Linear Loads:
• 3%
THD Nonlinear Loads:
• 4%
• Greater than 90% at 700VDC input

• Output Circuit Breaker
• Start Pushbutton
• Stop Pushbutton
• Power On Indicating Light
• AC Power Available Indicating Light

• Overvoltage Shutdown with Auto Restart: 750VDC
• Undervoltage Shutdown with Auto Restart: 300VDC
• Input Reverse Polarity
• Overtemperature Shutdown (Auto Restart)
• Electronic current limiting (Auto Reset)
• Output Short Circuit via 40A Circuit Breaker
• Input to Output Transformer Isolation
• Isolation Voltage: 2500VAC min
• Input MOV
• Output MOV
• Output Overcurrent (fixed)

• Fiberglass (reinforced polycarbonate)
• Nema 3R, totally isolated from any electrical surge
• Operating Ambient: -25C to 50C
• Storage Ambient: -25C to 85C
• 0 to 90% no condensation
• Input: Detachable 25 foot lead
• Output: Two NEMA 5-15 outlet

• Detachable 25 foot Input lead
• Rail Clamp (Positive Red)
• Return Clamp (Negative Black)
• Mobile Package (handle with rubber tires)