Meter mains supply Key features Long-term stable mains supply modules for MULTICAL® thermal energy meters. Delivers power to the entire meter including the installed sensors and communication modu- les. Some communication modules may require high-power SMPS HC-993-03/11 or HC-993-04/12. Fulfils double-insulation requirements when mounted in MULTICAL®, thus no protective earth wire is needed. Technical data Electrical data Mains supply 230 VAC +15/-30 %, 50/60 Hz 24 VAC ±50 %, 50/60 Hz, 24 VDC +75/-25 % * Insulation voltage 3,75 kV Power consumption < 1 W Backup supply Integral supercap eliminates interruptions due to short-term power failures (only supply modules type HC-993-07 and HC-993-08) EMC data Fulfils EN 1434 class A and C (MID class E1 and E2) * High-power SMPS - HC-993-04/12 and auxiliary supply HC-993-14 only Dimensions Made bespoke for the power supply area in MULTICAL® meters. 2
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