Description:Current Monitor Relays • Type: Undercurrent • Coil Voltage: 24 VAC • Contact Configuration: 2C DPDT • Mounting: 11 Pin Plug-in • Current Range Monitored: 0.1 - 1 Amp • Current Settings: Pick-up: Fixed at 5% above adjustable drop-out setting, Drop-out: Adjustable throughout current range monitored • Drop-Out Setting: Adjustable • Indicator LED: Green when Input Voltage is applied; Red Flashing when in time delay; and Red Steady when Relay is energized.
Series Description:The CU Series is used to detect an undercurrent condition. The drop-out current setting is user-adjustable within one of three ranges as shown in the Product Selection Table below. An external current transformer can be used to extend the range beyond 10 amperes.
The pick-up current setting is fixed at +5% of the selected drop-out setting. The relay will energize when the monitored AC current is above the pick-up setting. It will de-energize when the monitored AC current is below the drop-out setting for a period longer than the adjustable time delay (t) of 0.1-10 seconds. This delay prevents nuisance tripping caused by momentary line dips. The relay will energize when the current rises 5% above the drop-out setting.
Monitors AC currents for undercurrent conditions
Three separate current moni- toring ranges covering 0.1 - 10 amperes
External CT can be used to extend ranges
Adjustable Drop-out Setting with Fixed Pick-up Setting
Adjustable time delay of 0.1-10 seconds on drop-out
LED indicates output relay status
Choice of compact 8 Pin SPDT or 11 Pin DPDT plug-in case
