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RCMB104

Product catalog summary

Intended Use
The RCMB104 is a residual current monitoring module designed for use in electric vehicle charging systems. It works with a measuring current transformer, such as the CTBC17, and a type A RCD to monitor fault currents in AC charging systems where both AC and DC fault currents may occur. The module is suitable for integration into charging units compliant with IEC 62752 or UL 2231-2 standards and is intended for manufacturers, not end users.

Function
The module uses a patented method to measure the RMS value of the DC component and the AC component of residual currents. It signals limit value overruns through its outputs, Switch1 and Switch2, which are variant-dependent and comply with IEC 62752 or UL 2231-2 standards. Regular testing before each charging process is recommended to ensure safety and prevent measurement drift.

Standards
The RCMB104 complies with IEC 62752 for mode 2 charging and UL 2231-2 for personnel protection systems in EV supply circuits. It holds several patents, including EP 2 571 128 and US 9,397,494.

Device Features
The module features four outputs, a measuring range of ±300 mA, and a resolution of less than 0.2 mA. It supports load currents up to 32 A or 80 A RMS and is highly resistant to external interferences. It can replace a type B RCD when combined with a type A RCD and a suitable switching device.

Technical Data
The module operates at a rated voltage of 230/400 V and supports single-phase and three-phase currents. It requires a nominal supply voltage of DC 5 V and has a residual current measuring range of ±300 mA. The response times and tolerances vary based on frequency and current type.

Inputs/Outputs
The module includes various inputs and outputs, such as PWM, Vcc, GND, and error signals. It uses open collector outputs and supports a PWM frequency of 8000 Hz. The connection type is a PCB plug-in connector.

Environmental and Mechanical Conditions
The module is designed for stationary use, transport, and long-term storage under specified climatic and mechanical conditions. It has a degree of protection of IP00, while the measuring current transformer is rated IP55.

Ordering Information
Various models and accessories are available, including different measuring current transformers and connection cables.

Catalog excerpts

AC/DC sensitive residual current monitoring module for electric vehicle charging systems

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AC/DC sensitive residual current monitoring module for electric vehicle charging systems Intended use The residual current monitoring modules are used in combination with a measuring current transformer, e. g. the CTBC17, and a type A RCD which has to be provided in the installation for fault current monitoring of AC charging systems for electric vehicles in which AC or DC fault currents can occur. The module is, depending on the variant, suitable for integration into a charging unit (Mode 2, IC-CPD,) according to IEC 62752 or UL 2231-2 (CCID5 or CCID20). The monitoring module RCMB104 must be...

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* Optional capacities for EMC optimisation Side view; Front view Recommended drilling diameter: 0 1,1mm Tolerances dimensions

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Connection socket measuring current transformer • ••••• M1-M3= Measurement time point t1 = typ. 270 ms (start up delay to drive outputs) After starting the test, the charging system must ensure that the outputs are set correctly at the measurement time points M...: M1: Switch2 = HIGH M2: Switchl = HIGH M3: Switch2 / Switchl = LOW £ The offset measurement only takes place when, after the test, both outputs are LOW (Mi, M2). If the outputs are not set correctly at the measuring times M..., the RCMB104 must be regarded as defective.

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Technical data Main circuit (current paths trough CT) Rated operational voltage Ue 230/400 V Rated current In single-phase: 32 A (80 A) Insulation coordination according to IEC 60664-1/IEC 60664-3 Control circuit IC2 (a.. .f, Test, Error, Switch2, Switchl, Vcc, GND, PWM) Rated impulse voltage: Rated insulation voltage UI: Protective separation (reinforced insulation) between: The data are valid from the main circuit to the control circuit. Power supply Nominal supply voltage Vcc DC 5 V Tolerance of the supply voltage Vcc ±5 % Absolute maximum supply voltage Vcc DC 5.5 V Residual current measuring...

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Climatic class Stationary use (IEC 60721-3-3) 3K24 (except condensation, water and formation of ice) Connection measuring current transformer CTBC17 Maximum distance to connector Classification of mechanical conditions Connection type Modular dimensions Number of mating cycles Manufacturer type designation Article number Molex MicroFit 3.0 Header Measuring current transformer (without connector plug) IP55 The connector is not included in the scope of delivery. For further information, refer to the original data sheet created by Molex. Measuring current transformer Connection type Modular dimensions...

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RCMB104

RCMB104

Catalog excerpts

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