Note that this manual is used as a representative of a. NextGen RVSS starter. Individual starters can look different. This manual shows the mechanical retrofit.Section 1: Introduction. 1.1 Basic Description of a Single Unit. The.Ampgard.RVSS.is.designed.to.start.medium.voltage.motors. With Ampgard medium voltage control, you have the utmost in high performance and reliability. Ampgard offers a full line of key features to reduce the demand Ampgard MV4S 400 Ampere Reduced Voltage Solid State Soft Starter ( 670KB). Ampgard Medium voltage control - The premier medium voltage solution ( 1MB). The AMPGARD RVSS is designed to start medium voltage motors at reduced voltages with specific ramp times and amperages. An individual unit consists of a