Telemetric

Faulted Circuit Indicators and Current Sensors

The Telemetric MicroRTU is an ideal product for remote monitoring of Faulted Circuit Indicators (FCIs). FCIs are activated by the transient fault current just prior to the de-energization of the circuit by the protective device (fuse or circuit breaker). Most FCI's are equipped with an indicator that requires the line-crew to visually inspect each FCI to determine if it is in a fault indicating state. Of course, it takes time for the line-crew to sequentially perform these inspections.

By adding a MicroRTU to your FCI, operations personnel can be notified by cellular text messaging with the time and location of the fault. Optionally, these alarms can be sent directly to a SCADA system. Using multiple inputs, FCI's can be monitored for each phase.

Features:

Combined MicroRTU, communications, and user interface in a single solution.
No special software or airtime contracts required.
Access via the Telemetric Web Server access or your SCADA system.
Up to six digital inputs monitor the dry contact closures that indicate faults.
AC Line Voltage Monitor reports under and over voltage conditions as well as momentary and continuing power outages (AC powered models only).
Analog inputs can be used to monitor voltage or current values.
Relay outputs can provide control capability, such as resetting a current sensor, if available. ·
Compatible with off-the-shelf FCIs.
Analog inputs measure 0-5 VDC, 4-20mA DC, or 0-10 VAC.
Units are powered by 120 VAC. An optional solar power supply is available with a 12 V battery charging system. The MicroRTU communicates using the cellular data network. This provides coverage to over 98% of the population in North America.

MicroRTU Details
The T646 provides six status inputs. They can be either dry contact inputs, or can monitor the presence of 120 VAC. The dry contact inputs can also be configured to be counters or counter/timers. Four analog inputs can be configured to monitor a variety of conditions including AC voltage, DC voltage, current, or levels, using 0-10 VAC, 0-10 VDC (input 1 only), 0-5 VDC, 0-1 mA, or 4-20 mA sensors.

Six control outputs use electromechanical relays. Outputs one and two are rated at 30 Amps at 125 VAC (if spade terminals are used). Outputs three through six are rated at 8 Amps at 250 VAC. Outputs can be configured as permanent or momentary. The momentary output signals can be user configured in 1 second increments from 1 second to 241 hours. One 12 VDC 100 mA output is for powering sensors (not available on 12 VDC models). An on-board toggle switch is provided to disable remote control during maintenance operations.