ABB 64844-004 Voltage monitoring card

1. ABB's voltage monitoring relays, which are designed for use in single-phase AC and/or DC systems for over- or undervoltage monitoring as well as detection of phase loss [1] [2]. These devices are available with different supply voltage ranges and work according to the open-circuit principle [1] [2].

2. ABB's voltage monitoring relays are compact (width only 22.5 mm) and powerful, mainly used for monitoring single-phase AC/DC systems' current and voltage [0]. The CM-ESS.1 and CM-ESS.2 series single-phase monitoring relays (CM-EFx, CM-ESx, CM-SFx, and CM-SRx) are part of this product line [0] [1] [2].

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PLC module, programmable controller, CPU module, IO module, DO module, AI module, DI module

Network communication module,

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Module, redundancy module, power module, relay output module, relay input module, processor module

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