RCMB300-series AC/DC sensitive residual current monitoring modules with an integrated measuring current transformer

RCMB300-Series AC/DC sensitive residual current monitoring modules with an integrated measuring current transformer Device features • Continuous residual current monitoring in compliance with DGUV Vorschrift 3 (German Social Accident Insurance Regulation 3) • Easy DIN rail or screw mounting • RS-485 interface with Modbus RTU (reading out measured values/setting parameters) • Integrated switching outputs with two changeover contacts K1 and K2 (galvanically isolated) • Combined test and reset button • Multicolour LED indicating operation, exceeded response value, disturbances and status messages...

Variants Electronic modules Type B modular residual current module acc. to IEC 60755 Measuring current transformers (P = shielded) Measuring current transformer, internal diameter 20 mm Measuring current transformer, internal diameter 35 mm Measuring current transformer, internal diameter 60 mm Measuring current transformer, internal diameter 120 mm Measuring current transformer, internal diameter 210 mm

Wiring diagram 21, 22, 24 = Relay for main alarm = surge protection device The use of a type 2 surge protection device (SPD) is mandatory due to possible impulse voltages and in order to comply with normative requirements. The surge protection device must be connected upstream of the power supply unit on the supply side. Features of the surge protection device: – Nominal discharge current In (8/20 μs): 20 kA – Response time: 25 ns – Two-stage: 1 varistor + 1 spark gab Alternatively, the power supply unit must be connected to a CAT II supply without a surge protection device.

EBENDERConnection RS-485 interface (Modbus RTU) The internal The internal The LED indicates the system state by means of colours and lighting/flashing. The changeover contacts of relay outputs K1 and K2 have defined switching positions for each system state.

Dimension diagrams

Example for the composition of an RCMB module Measuring current transformer: CTBC35 Final RCMB module Installation instructions for measuring current transformers CAUTION Device damage due to high induction currents! High currents can be induced into the conductor loop due to the AC/DC sensitive measurement technology used. Do not route protective conductors and lowresistance conductor loops through the measuring current transformer! Device damage due to interference pulses! The connecting cable (supply, analogue interface…) must not be routed directly past the current transformer core. Risk...

Technical data ( )* = factory setting Measuring circuit Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Internal diameter measuring current see "Dimension diagrams", Page 6 Definitions Characteristics according to IEC 62020 AC/DC sensitive, type B Control circuit 1 (IC3) Control circuit 2 (IC4) Rated insulation voltage Overvoltage category Pollution degree Operating altitude Primary conductors routed through the current transformer Terminal block 1 (24 V, GND, T/R, GND, A, B, X1, X2) Terminal block 2 (11, 12, 14) Terminal block 3 (21,22, 24) 800 V Ml 2 Response value /4n Prewarning 30...

Multicolour LED red/green, Refer to "System states: LED and output relays", Page 5 Required terminals are included in the scope of delivery. Phoenix Contact The connection conditions of the manufacturer apply. Maximum length connecting cable 10 m Connection properties with ferrules Number of changeover contacts Relay mode Switching capacity Contact data acc. to IEC 60947-5-1 Rated operational voltage AC Utilisation category Rated operational current AC Rated operational current AC (for UL applications) Rated operational voltage DC Utilisation category Rated operational current DC Minimum current...

RBENDER Ordering details Measuring current transformers Accessories

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