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RCMS460-490_D00067_03_M_XXEN/12.2017
3. System description
In buildings and industrial installations, a fault or failure of the power supply
involves high costs. In installations which require a high fault tolerance and
good safety, an RCMS system should constantly monitor the TN-S system for
insulation deterioration to ensure that the system is "clean" and electromag-
netically compatible.
3.1 Typical applications
Measuring and evaluating residual, fault and rated currents of loads
and installations in the frequency range of 0…2000 Hz (W…, WR…,
WS…, WF… series measuring current transformers, 42…2000 Hz (W…,
WR…, WS…, WF… series measuring current transformers) (measuring
range see "Chapter 8.3 Technical data").
Monitoring of currents which can cause fires in flammable atmos-
pheres.
EMC monitoring of TN-S systems for "stray currents" and additional N-
PE connections.
Monitoring of N conductors for overload caused by harmonics
Monitoring of PE and equipotentional bonding conductors to ensure
they are free of current.
Residual current monitoring of stationary electrical equipment and sys-
tems to determine test intervals which meet practical requirements in
compliance with the accident prevention regulations BGV A3 (Ger-
many).
Personnel protection and protection against fire by rapid disconnec-
tion.
Monitoring of digital inputs.
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