The M-0329B LTC Backup Control prevents a defective LTC tapchanger control from running the voltage outside the upper and lower voltage limits and, in addition, will prevent the line drop compensator from raising the voltage too high under full load or overload conditions. Selectable bandcenter and deadband settings allow the M-0329B to match any transformer control. The M-0329B responds to a voltage excursion within 0.2 seconds and operates within ±1% voltage accuracy over a range of -40° to +80°C. Prevents a defective LTC tapchanger control from running the voltage outside the upper and lower limits.

• Prevents the line-drop compensator from raising the voltage too high under full or overload conditions.
• Selectable bandcenter and deadband ranges allow the M-0329B to match any transformer control.
• Responds to a voltage excursion within 0.2 seconds.
• Operates within ±1% voltage accuracy