LTI Industrial Third Rail inverters are specifically designed for subway and railway applications. With rail applications, the incoming power can be extremely dirty and harmful to anything connected to it. LTI's inverter system is designed to withstand all transient spikes (3000V+) that frequently occur when rail cars pass by. All systems operate within the DC voltage range of 350 - 850VDC. These systems can be optionally equipped with an automatic static transfer switch if an external AC power source is available. All systems come standard with a network communications kit, and front panel monitoring.