SGM-C6 Compact Meter

Product information

The SGM-C6 is characterized by the following features:

• Case compliant with DIN standard for three-point mounting with terminal cover suitable for holding an LMN adapter
• Flexible measurement via shunts with intrinsic immunity to harmonics and external magnetic fields: +A (consumption meter) or -A (supply meter) with reverse running lock, +A/-A (bidirectional meter) or totalizing supply meter
• PIN-protected data display and output
• Front optical information interface for local data provision
• Multi-functional display for meter data and historical data over 2 years
• Sturdy, low-emission power supply
• Output of readings and grid quality parameters (grid status data)

Standard functions

In accordance with statutory provisions, the meter acts as a reliable and secure metering device for acquisition of billing-related active power quantities and network-related measurement data and parameters, such as effective values of line voltages and currents, power, phase angle and line frequency (grid status data).

Active power is measured in both directions, with the following measurement modes being available:

• Unidirectional meter (+A or -A)
• Bidirectional meter (+A and -A)
• Supply meter, totalizing without reverse running lock (-A)

The current sensors used are robustly mounted, precise shunts, suitable for accuracy class B. The actual power values in all the phases are registered internally and are available over the data interfaces. The measurement mode is set at the factory in accordance with metrological requirements.

The meter also provides the following grid functions:

• Active power P_L calculated as an average over 1 second, resolution 0.1 W
• Effective value of line voltage U_L calculated as an average value over 1 second, accuracy 1% of measurement, resolution 0.1 V
• Effective value of line current I_L calculated as an average value over 1 second, resolution 0.1 A, accuracy 1% of measurement
• Phase angle j_L, accuracy/resolution 1° relative to the fundamental frequency
• Line frequency f_line, accuracy 1%, resolution 0.1 Hz

The daily, weekly, monthly and annual values of active power over a period of two years are recorded in the ring buffer as historical data and displayed under PIN protection. The front optical interface is used for local provision of measurement data and device information in accordance with EN 62056-21/61 at 1-second intervals. This function is also PIN protected. PIN entry is via the control button or optionally via the optical button. An LMN interface (RS-485 interface) can be provided using an LMN adapter. It enables connection to a smart meter gateway and operates at a baud rate of 9.6 kbit/s. The protocols employed are SML/EN 62056-61 in the application layer.

Optional Functions

A dual tariff module is available as an option. The tariff registers in both power directions, as well as the current tariff, are shown on the display. Removing the terminal cover is detected as tampering and logged.