SRCMH070IB+ Smart Residual Current Monitor of Type B/B+ for measuring DC and AC residual currents up to 100kHz with analog 4-20mA output, relay output and USB-connectivity to PC Software for residual current analysis. Increased flexibility with user selectable settings and auto setup. Features & Highlights 70mm primary cable / busbar aperture Residual current monitoring in industry DC and AC residual current measurement of Type B/B+ in the range 0-2Arms up to 100kHz Condition-based monitoring of insulation health User selectable Frequency range, Integration time and Rated residual operating current Auto setup Replacement of / supplement to compulsory High voltage insulation testing Scheduling of planned factory maintenance DC power systems (UPS, PV, LED lighting...) Analog 4-20mA and relay output High frequency loads (SMPS, Motor drives…) Fluxgate current measurement technology with fixed excitation frequency for enhanced accuracy and stability Mission critical (Data centers, Medical ...) USB-connectivity and PC Software application for residual current analysis Background Residual currents (aka Earth fault currents, Insulation leakage currents) are unique measure for the state of the insulation of the electrical power system and its need for maintenance & repair to avoid nuissance shutdowns. Monitoring of the residual currents in real-time in a power system gives the possibility to evaluate the health of the electrical insulation based on the actual value measured, while the long-term development of the residual current value can be used for planning maintenance to avoid significant insulation deterioriation. In this way, Residual Current Monitors (RCMs) used in a Condition-based Monitoring scheme as per Industry 4.0 standards can ensure early fault detection and increase the availability of the power system at much lower cost than regular, expensive and time consuming high voltage insulation testing. Residual currents in electrical power systems can have multiple sources: insulation faults, insulation leakage currents, capacitive displacement currents, EMC filter leakage currents etc. While some of these contributing residual currents are normally present due to material physics when subjected to high or alternating voltages, other contributors are sign of deterioriating insulation which can produce abnormal heat dissipation, short-circuits and in worst case fire and danger to personal safety. Proliferation of DC loads (e.g. LED lighting, DC motor drives, 48Vdc bus systems etc.), DC distributed generation (e.g. PV systems, UPS, batteries etc.) as well as high-frequency converters (e.g. SMPS, motor drives etc.) in industrial environments makes it increasingly difficult to measure reliably insulation faults with traditional RCMs designed for AC 50/60Hz with limited measurement bandwidth. It is the experience of many installers around the world that in order to make the residual current protection work not only now but also in the future with extensions of existing plants, it is necessary for the end-user to have the possibility to select from several residual current limits, different frequency bandwidths and sensitivity levels. Precision – Innovation www.danisense.co

dani/ense General description Residual Current Monitors (RCMs) are used for monitoring of the residual currents in electrical power systems without the need for fast system shutdown. The RCM of Type B/B+ can measure DC and AC residual currents at frequencies of up to 100kHz, which makes it compatible to multitude of industrial applications, loads and generation sources. With its user selectable settings, this RCM offers flexible platform for residual current measurement which fits every possible usage both at the moment the industrial plant is designed, but also in case of extensions with new...

SRCMH070IB+ User interface description This RCM product features three user selectable parameters, each with the choice of selecting 3-5 different values. The simple and intuitive user interface can be found on the top of the RCM and is used for configuring the RCM with three buttons located below the surface level. These buttons can only be operated with a tool which prohibits unintentional and unauthorized access, as per applicable product standards. Interface features furthermore a Test button and status LED for visual indication. Power-on / Status LED Lights in green colour with heart-beat*...

SRCMH070IB+ Functional description Danisense Residual Current Monitor senses the instantaneous, real-time value of both DC and AC residual current using the built -in transducer head with integrated balanced Flux-gate detector. For the purpose of functional protection and especially fire protection of the electrical power system, the RCM implements the True RMS (TRMS) value of the residual current which corresponds to the amount of heat dissipated in the insulation. In order to provide high level of flexibility in the RCM usage and fit to as many potential applications as possible, this RCM is...

SRCMH070IB+ Smart-RCM (SRCM) PC Software application description Danisense SRCM PC Software application makes it possible to analyze the residual currents in electrical installations in easy and intuitive way by taking advantage of the USB-connectivity of SRCM to a PC with Windows OS. Supported features: General screen with easy access to device information, user settings, measurements, test function etc. FFT screen for analysis of residual currents in time & frequency domain, as well as TRMS calculated in frequency ranges Residual current logging in prolonged time periods for the purpose of...

Data export Auto setup Danisense SRCM is capable of performing automatic setup of the user selectable settings for installations in proper condition taken as baseline. This means that when the auto setup is initiated, the RCM will automatically measure the residual currents at the location of the installation with different frequency ranges & integration time settings and select the rated residual current limit which is at least 50% higher than the measured value. In this way the RCM will operate with comfortable margin for future development of the measured residual current towards the trip...