Monitor and Control Remote and Mobile Substations

Remote, portable, or isolated substations are ideal applications for the Telemetric product line. Telemetric MicroRTUs and DNP-RTMs utilize the cellular control channel for communication. With coverage available to 98% of the population in North America, it is one of the best ways to ensure coverage to the substation. The Telemetric radios operate like roaming cell phones, so there is never a need to reconfiugre the device. Once the substation has been relocated, simply apply power to the Telemetric device and it will automatically establish two-way communication with the nearest cell tower. No costly or time-consuming reconfiguration is necessary, making this a much simpler solution than a private radio network or a leased phone line.

Up to six digital inputs are provided to monitor switches, alarms, battery chargers, meters, and any other contact closure style inputs. The Single Phase Voltage Monitor provides real time feedback of actual voltages.

Telemetric MicroRTUs offer several functional advantages over other products:

• System reliability is improved by a direct, positive confirmation that a command was carried out.
• A two-way communications path can provide valuable feedback when a local voltage-based override condition exists.
• The coverage provided by the analog cellular coverage exceeds that of any other wireless communications network in North America.
• The internal cellular radio module is mobile and can "roam" anywhere in the North American cellular area with no need to purchase local cellular accounts.

The MicroRTU's 120VAC (or 240) VAC outputs can be individually configured as:

• momentary control signals with programmable durations to match the startup time requirements of controlled equipment or
• as continuous ON/OFF control signals.

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.