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LINETRAXX® RCMB300-Serie

LINETRAXX® RCMB300-Serie
12Pages

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LINETRAXX® RCMB300 series AC/DC sensitive residual current monitoring modules with an integrated measuring current transformer Power in electrical safety

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AC/DC sensitive residual current monitoring modules with an integrated measuring current transformer Product description The residual current monitoring modules of the RCMB300 series are intended for measuring AC and DC fault currents in earthed systems (TN and TT systems). The modules are able to measure residual currents up to IΔ = 20 A in a frequency range of DC…100 kHz. Two separately adjustable response values allow a distinction to be made between prewarning and alarm. When the response value IΔn2 (alarm) is reached, the output relays K1 and K2 switch. The modules feature an RS-485...

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Variants Electronic modules • RCMB301 Type B modular residual current module acc. to IEC 60755 Measuring current transformer cores • CTBC20 Measuring current transformer core, internal diameter 20 mm • CTBC20P Measuring current transformer core shielded, internal diameter 20 mm • CTBC35 Measuring current transformer core, internal diameter 35 mm • CTBC35P Measuring current transformer core shielded, internal diameter 35 mm • CTBC60 Measuring current transformer core, internal diameter 60 mm • CTBC60P Measuring current transformer core shielded, internal diameter 60 mm • CTBC120 Measuring...

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Wiring diagram RCMB301 (example) Main alarm * – 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.

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Connection RS-485 interface (Modbus RTU) wire jumper * * The internal 120 Ω terminating resistor can be connected by using the wire jumper. ** The internal 120 Ω terminating resistor can be connected by means of the DIP switch. System states: LED and output relays The LED indicates the system state by means of colours and lighting/flashing. The N/O contacts of relay outputs K1 and K2 have defined switching positions for each system state. System state Device switched off Normal operating state Alarm state Changeover contact Device is de-energised, no monitoring, no monitoring function The...

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Dimension diagrams

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Technical data Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Possible response values (to be set on the evaluator) Definitions: Measuring circuit (IC1) Primary conductors routed through the current transformer Secondary (IC2) Terminal block 1 (24 V, GND, T/R, GND, A, B, X1, X2) Control circuit 1 (IC3) Terminal block 1 (11,12,14) Control circuit 2 (IC4) Terminal block 2 (21,22,24) Rated insulation voltage 800 V Overvoltage category III Area of application ≤ 2000 m AMSL Rated impulse voltage: IC1((IC2-IC4) 8 kV IC2/(IC3-IC4) 4 kV IC3/IC4 4 kV Rated insulation voltage: IC1/(IC2-IC4)...

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Required terminals are included in the scope of delivery. Operating mode Mounting Degree of protection, internal components (DIN EN 60529) Degree of protection, terminals (DIN EN 60529) Flammability class Software Documentation number Weight RCMB301 CTBC20 CTBC20P CTBC35 CTBC35P CTBC60 CTBC60P CTBC120 CTBC120P CTBC210 CTBC210P Terminal block 1 Manufacturer Phoenix Contact Type DFMC 1.5/5-ST-3.5 BK The connection conditions of the manufacturer apply. Connection properties rigid 0.2…1.5 mm² (AWG 24…16) flexible 0.2…1.5 mm² (AWG 24…16) with ferrule 0.25…0.75 mm² (AWG 24…19) Terminal block 2, 3...

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Ordering details Measuring current transformers Evaluation electronics Supply voltage Us Required terminals are included in the scope of delivery. Internal diameter P = full magnetic shield Accessories Suitable system components Description Interface converter USB to RS-485 Terminal block for RCMB301 module1) Snap-on mounting for CTBC20 and CTBC20P1) Snap-on mounting for CTBC35 and CTBC35P1) 1) max. connected Description current transformers 4 14 34 Voltage supply Included in scope of delivery Example for the composition of an RCMB module Measuring current transformer: CTBC35 Final RCMB...

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Installation instructions • Do not route any shielded cables through the measuring current transformer. • xisting protective conductors and low-resistance conductor loops must not be routed through the measuring current transformer! E Otherwise, high currents could be induced into the conductor loop due to the AC/DC sensitive measuring technology used. Never route an existing protective conductor through the measuring current transformer. All current-carrying cables must be routed through the measuring current transformer. * Distance to 90° angle: 2x external diameter of the current...

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BENDER Group RCMB300 series_D00372_04_D_XXEN / 03.2021 / © Bender GmbH & Co. KG, Germany – subject to change! The specified standards take into account the edition valid until 03.2021 unless otherwise indicated. Bender GmbH & Co. KG Londorfer Straße 65 • 35305 Grünberg • Germany Tel.: +49 6401 807-0 • info@bender.de • www

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LINETRAXX® RCMB300-Serie 12Pages

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LINETRAXX® RCMB300-Serie
12Pages