- 1 to 67hp Drives : 2 Second 50% Sag -
The Bonitron M3534RT series of DC Bus Ride-Thru Modules provides protection from line voltage sags for 208-460VAC variable frequency drives that use a fixed rectifier and DC bus.
Many drives claim to have ride through capability, such as auto restart or kinetic buffering, but they are not able to maintain complete control over the motor as called upon by a critical process during undervoltage power disturbances.
The majority of AC line voltage sags that occur in three-phase distribution systems have a magnitude (decrease from nominal voltage) of less than 50% and duration of less than 0.5 seconds. The M3534RT provides sufficient Ride-Thru capability to handle these types of voltage sags by temporarily storing energy in an inductor and releasing it back into the drive’s DC bus using maintenance free IGBT switching technology. This allows the drive to “ride through” these events, MAINTAINING MOTOR SPEED and TORQUE, without experiencing drive shutdown.
The M3534RT connects in parallel with drives so it does not decrease system reliability. Modules are tested and certified to exceed Semi-47 requirements.
