The accelerating proliferation of Distributed Generation (DG) and energy storage assets on the distribution system is driving a need for more points of monitoring and control along the feeder.
Built around the Bitronics® M661P3, the Distribution Grid Monitor (DGM) can be deployed at multiple locations on each distribution line to interface with Lindsey and other pole top sensors. The DGM provides operators with a voltage profile along the full length of line, helpful loading and fault information, and can support Distribution Automation applications.
The DGM calculates better than 0.5% accurate voltages, currents, power, energy, and fault data from raw sensor measurements. A typical DGM system consists of the M661P3 pole top monitor, a local PPXIITD detached display, a NEMA enclosure, and a shelf for utility supplied radio, all packaged as one offering with Lindsey GEN2 sensors and supporting cables. The DGM-60-02-3 is an existing design with the following features:
Lindsey GEN2 Post Insulator Sensors and Cables
- Less than 1/2 the weight of Lindsey Polysil-based sensors.
- Hotstick-friendly conductor keeper* with washer-less bolts accommodates a wide range of conductor sizes.
- Glove friendly cable with bayonet-style waterproof connectors that “snap” when closed, eliminating over- and under-tightening.
- 0.5% voltage accuracy, with flat harmonic response, and no phase shift. 1% current accuracy with no phase shift.
- Voltage and current accuracy is independent of weather and conductor diameter.
- Safe, low voltage, very low current outputs.
- Hydrophobic cycloaliphatic epoxy construction provides superior performance in high pollution and wet environments.
Bitronics DGM in Enclosure
Bitronics M661P3 Pole Top Monitoring Transducer providing:
- 12 V dc power for radio (up to 12W)
- 10 V ac input for three-phase volts and currents
- Fault indication using a definite time overcurrent relay element (ANSI code 51)
- Volts, amps, watts, VARs, VA, PF and peak fault current measurements
- DNP3 output via radio, Ethernet or serial
- Better than .5% accuracy
- Connects to multicore Lindsey Sensors
- Powder-coated steel ANSI 61 Gray 16”x14”x10” Nema 4 Enclosure with brackets with bolt holes for mounting on to pole
- Bitronics PPXIITD display to provide local indication of measurement values
- Door switch connected to binary input on M661P3 to provide alarm on door opening
- Provision for accommodating user-provided radio on shelf
Customization of the DGM-60-XX-X can be provided.
- Configurable RS-232/RS-485 serial port
- DNP3 or Modbus protocols
available via serial port and optionally via RJ-45 10/100 TX Ethernet port
- No need for PC software. Ethernet service port provides access to web server in the instrument so meters can be interfaced with just a web browser for viewing and configuration
- Full measurement set including volts, amps, watts, kWh, demands, peaks and frequency
- Peak fault currents and time overcurrent pickup
- Voltage measurements: 0.2% of reading (3.5 to 20Vrms)
- Current Measurements: 0.25% of full scale (200Vrms input to transducer)
- Updated every cycle
- Operating temperature range: -40 to +70°C, storage temperature -40 to +85°C
- Humidity: 0-95% non-condensing
- Surge withstand: ANSI/IEEE C37.90.1: 2002
- No need for PC software; all settings configured through a web browser.
- End-of-Line Monitor (EOL)
- Volt-VAR Optimization (VVO)
- Conservation Voltage Reduction (CVR)
- Fault Location Isolation and Service Restoration (FLISR)
- Fault Indication using a definite time overcurrent relay element (ANSI Code 51)
- Report Peak Fault Current
Built for the Poletop
- Powered from 120V ac or 240V ac
- One physical digital input provides alarm on door opening
- Includes a 12V dc output to power a radio modem or other accessory; 600mA output capability
- Rugged aluminum case
- Easy to mount with compact transducer footprint
- Option to purchase in NEMA enclosure
Dimensions: 4” H x 5.25” W x 6.34” D (102mm H x 133mm W x 161mm D)
Weight: 1.8 lbs. (.81 kg)
Power Supply: 120V ac or 240V ac
– Four terminals (A, B, C, and Common).
– Up to 20V ac
– Three terminals
– Inputs are 10Vrms (representing 600A rms)
– Accommodates peaks of 200Vrms for measuring fault currents
– RJ45 10BaseT/100BaseTX port for service port functions and protocols
– Serial port RS-232/RS-485 four-wire and one binary input