Shark® 270 Revenue Meter
The Shark® 270 is a socket form revenue meter designed for both critical meter applications and basic commercial/industrial metering applications. It is a significant departure from existing technology, incorporating high-end revenue metering functions in an economical design.
Primary Revenue Metering
The Shark® 270 meter is a full four quadrant, bidirectional revenue meter that can also be used for inter-tie metering. Its 0.1% metrology accuracy meets and exceeds all the accuracy requirements of ANSI C12.20 Class 0.1% and IEC 62053-22 CL 0.2S. The meter has advanced revenue metering features that allow it to be used not only for measuring basic energy, but also for providing a full complement of necessary tools, such as transformer/line loss compensation, CT/PT compensation, advanced test mode, perpetual TOU, and extensive logging for interval energy storage.
Extensive Communication Capabilities
The Shark® 270 revenue meter also has one of the industry’s most comprehensive communication capabilities, including extensive Ethernet functionality and 4G LTE™ underglass cellular. It can send out data via a host of protocols, including Modbus, Level 2 DNP3, and IEC 61850, to help in solving any metering data application.
Field Expandable I/O
The Shark® 270 revenue meter is field upgradeable. Expandable I/O cards include:
- 4G LTE Wireless Card
- RS1S: Serial Communication Card with RS232/485 Modbus and DNP3
- INP100S: 100BaseT Ethernet Card with Modbus and DNP3
- INP300S: IEC 61850 Protocol Ethernet Card
- 1mAOS: Four Channel Bi-directional 0-1 mA Outputs
- 20mAOS: Four Channel 4-20 mA Outputs
- PO1S: Four Pulse Outputs/Four Status Inputs
- RO1S: Two Relay Outputs/Two Status Inputs
Data Trending and Analysis
The Shark® 270 meter has up to 128 MB of memory for data logging, used for historical trends, limit alarms, I/O changes and sequence of events. The meter’s advanced storage means the unit can be programmed to store historical and waveform data for many years. The unit’s real-time clock allows for time stamping of all the data in the instrument when log events are created. The clock is accurate to 3 ppm and is very stable over temperature.
Power Quality Measurement and Analysis
The Shark® 270 revenue meter records up to 512 samples per cycle for a voltage sag or swell, or a current fault event. The unit provides the pre and post-event recording capability shown in the table below. Waveform records are programmable to the desired sampling rate. V5 provides up to 128 MB of storage.
The meter’s advanced DSP design allows power quality triggers to be based on a 1 cycle updated RMS. Hundreds of events can be stored until the memory fills. The meter stores waveform data in a first-in/first-out circular buffer to insure data is always recording.
The unit uniquely offers a waveform scope to view the real time waveform for voltage and current. The waveform scope allows the meter to be used as a basic oscilloscope throughout a power system.