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INTEGRA 500  Series Meters-Discontinued. Replace with Alpha Series.   Prices  and Details Integra 244-IN (Discontinued)  Replace with Alpha 50  Integra 510     (Discontinued)  Replace with Alpha 10 Integra 520     (Discontinued)  Replace with Alpha 20 Integra 530     (Discontinued)  Replace with Alpha 20 Integra 540     (Discontinued)  Replace with Alpha 20  510  520  530  540 INT-244  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