The Tegra 710 and 810 multi-function digital metering systems display and communicate major electrical parameters. To suit user requirements the range includes single-phase, three-phase three-wire and three-phase four-wire capabilities under low voltage with unbalanced loads.
Operation
The digital meters are available in 4 module DIN-rail or DIN 72 panel mounted enclosure and display up to 57 electrical parameters including the true rms values, selectable CT and VT ratios and monitor current, voltage, power factor, phase angle, active/reactive energy, and frequency values.
The simple menu-driven interface offers three reading modes (phase parameters, system parameters and maximum parameter values).
Programmable Display
The interface programme buttons enable simple programming of CT and VT ratios settings, configuration of selected communication options and adjustment of operating parameters.
System Input
Designed for all low and medium voltage switchgear and distribution systems, the Tegra 710 and 810 DMS offer programmable VT and CT ratio capability and direct connection up to 500V ac with 5A CT inputs.
System Output
The standard version of Tegra 710 and Tegra 810 offers two independently programmable relay outputs (2A, 250V) that can be configured to produce either a pulsed output or can be individually programmed to be associated to the measured parameters. (Operating value, latching, alarm mode, relay operating mode, set-point value, differential value, relay activation delay).
Digital Communications
Tegra 710 and Tegra 810 DMS offer optional RS485 communication port for direct connection to SCADA systems using the Modbus RTU protocol.
Remote monitoring enables user to record system parameters in real time, using high resolution numbers.