The type NGV relay is a high-speed relay designed for calibration on decreasing voltage (drop-out), or increasing voltage (pick-up) and may be continuously energized at rated voltage. The NGV19 is a special relay available for application as a battery monitor.

Applications 

• Battery monitor
• Emergency throwover control equipment
• Ground fault on ungrounded systems

Protection and Control 

• Instantaneous DC undervoltage
• Time delay DC undervoltage available

Available NGV Relays 

• NGV11, NGV12, NGV13
  NGV15,
  NGV17, NGV18, NGV19

Manufacturing for the following models have been discontinued: 

• NGV21, NGV22, NGV23, NGV25, NGV26, NGV27 & NGV28
• NGV99