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Integra 244-500 Series Comparison Chart.     Prices  and Details DIN Integra 510 (Discontinued) DIN Integra 520 (Discontinued) DIN Integra 530 (Discontinued) DIN Integra 540 (Discontinued)     DIN Integra 2000   DIN Integra 1530 (Replaces  244 Series)             DIN Integra                   Digital Metering Specification Overview  510  520  530  540  2000  1530  1630   96mm (3.78") x 96mm (3.78") v v v v v v v   Panel cut-out 92mm x 92mm (3.62"2) v v v v v v v   IP54 protection v v v v v v v   Single-phase system           v v   Single-phase 3-wire system           v     3-phase 3-wire system v v v v v v v   3-phase 4-wire system v v v v v v v   3-phase 4-wire with neutral CT           v     3-line 4-digit LCD display v v v v         Graphical backlit LCD display         v       3-line 4-digit LED display           v v   Programmable display v v v v v v v   Programmable VT ratios         v v v   Programmable CT ratios v v v v v v v   Configuration software option           v v   Measured parameters                 Voltage line-to-line v v v v v v v   Voltage line-to-neutral v v v v v v v   System voltage v       v v v   Current L1, L2, L3 v v v v v v v   System current v       v v v   Neutral current calculated         v v v   Neutral current measured           v     Frequency 45-66Hz v       v v v   Demand current   v v v v v v   Max demand current   v v v v v v   Demand active power         v v v   Max demand active power         v v v   Power factor         v v v   Active power kW         v v v   Reactive power kVAr         v v v   Apparent power kVA         v v v   kW demand         v v v   Active energy kWh import         v v v   Reactive energy kVAr import         v v v   Active energy kWh export         v v v   Reactive energy kVAr export         v v v   Voltage % THD average           v v   Voltage % THD L1, L2, L3           v v   Current % THD average           v v   Current % THD L1, L2, L3           v v   Hours run             v   Communication options                 Digital RS485 Modbus RTU         v v v   Pulsed output         v v v   Trip relay outputs     v v         Analogue outputs         v v     Lonworks         v v     Profibus           v     Johnson Controls Metasys NII         v v v   Compliant with                 UL3111-1 v v v v         UL 61010B-1           v     IEC 1010-1 / BSEN 61010-1 CAT III v v v v v v v   IEC 688 / BSEN 60688 v v v v         Approvals                 UL file no. E20300           v