True RMS measurement of voltage and current parameters are achieved by single function Ammeter (WL1110 / WL1310) and Voltmeter (WL1120 / WL1320) series. These are available in Class 1 and 0.5.

Salient features

• Accuracy Class 1 as per IEC 62053-21 and Class 0.5 as per IEC 62053-22
• True RMS measurement
• Password protection site selectable
• Auto and manual scrolling.
• Field programmable CT, PT ratio
• Site selectable 1A/5A
• Phase wise and average display of voltage and current as per applicable meter
• Inbuilt selector switch for 3 phase models
• Site selectable for 3 Phase 4 wire, 3 Phase 3 wire, 1 phase
• Wide operating range of 80 to 300 V AC auxiliary supply in 4110 series
• Suitable for 50/60 Hz