SIM100 Ground Fault, Earth Fault Detection Isolation Monitor / Insulation Monitor

SIM100
Insulation Monitor

Sensing

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SIM100 Ground Fault, Earth Fault Detection
Isolation Monitor / Insulation Monitor / IMD

Sendyne SIM100 Insulation Monitor Ground Fault Detection

The Sendyne SIM100MOD is the first high voltage isolation monitoring / insulation monitoring / IMD device for Electric Vehicles (EV/HEVs) and charging stations capable of operating correctly even when the battery is active, and experiencing large voltage variations. The SIM100MOD continuously monitors the isolation resistance between a vehicle’s IT (Isolated Terra) power system and chassis for deterioration of insulation and potentially dangerous levels of leakage current. Based on the Sendyne SIM100 IC, which utilizes an advanced algorithm developed by Sendyne's modeling team, the module is compatible with all relevant standards for EVSE and Charging Stations such as IEC 61557 and UL 2231, including providing two channels for minimum path detection.

Applications

Electric Vehicles

Charging Stations / CHAdeMO fast charging

Photovoltaics / Solar Panels

Features

Measures voltage for each battery terminal to chassis

Reports battery voltage

Operates normally while the battery is having large voltage excursions and variations

Measures and reports modeled leakage resistances per model adapted by the safety standards ISO6469-1, FMVSS §571.305 and others

Reports calculated isolation resistance in Ω/V per requirements of the safety standards

Measures and reports the value of capacitance from each battery terminal to chassis

Calculates and reports the energy stored by the total capacitance between the battery and chassis

Continuously monitors connections of the voltage sense lines to the battery terminals; reports inadequate connections

Continuously monitors connection of the unit to chassis; reports inadequate connection Provides high immunity to common-mode noise that can be present on the battery terminals

Provides nonvolatile storage for the value of the maximum (design) voltage of the battery (used in calculations of the isolation resistance and stored energy). If the actual observed battery voltage is higher than the set maximum voltage, the higher value is used in the calculations of the isolation resistance and stored energy

Provides nonvolatile storage for calibration of the voltage measurements and other parameters; all reported measurements have their respective calibration parameters applied automatically

Provides built-in galvanically isolated and intrinsically leakage-safe excitation source

A single CAN-interface transaction (packet) provides sufficient information for determination of the safe status of the system

Provides measurement of the internal isolated power supply voltage for system diagnostics

Provides measurement of the module’s temperature for system diagnostics

Description

The Sendyne SIM100MOD is the first high voltage isolation monitoring insulation monitoring device for Electric Vehicles (EV/HEVs) capable of operating correctly even when the battery is active, and experiencing large voltage variations. The SIM100MOD continuously monitors the isolation resistance between a vehicle’s IT (Isolated Terra) power system and chassis for deterioration of insulation and potentially dangerous levels of leakage current. Based on the Sendyne SIM100 IC, which utilizes an advanced algorithm developed by Sendyne's modeling team, the module is compatible with all relevant standards for EVSE and Charging Stations, including providing two channels for Minimum path detection.

The SIM100MOD detects not only resistive leakages but also capacitively stored energy that could be harmful to human operators. Due to a proprietary, patent-pending advanced algorithm, the module is capable of detecting all sources of leakage, including multiple, simultaneous symmetrical and asymmetrical faults, as well as resistive paths between the chassis and points in the battery with the same potential as the chassis. In the case of an insulation fault, the unit identifies the relative position of the fault in relation to the battery’s terminals. Battery-connected VX1 (Vp) and VX2 (Vn) voltage inputs can measure ±1000 V in reference to Chassis (0 V). Communications are achieved via an isolated CAN 2.0B interface (500 kbit/s or 250 kbit/s), with an input voltage range of 5 V to 53 V, and a wide temperature range of –40 °C to +105 °C. The module was designed to ISO 6469-3:2011-12 / FMVSS 305.

An evaluation kit, including a CAN to USB dongle and cables, and PC software is available.

Documentation

SIM100 Product Brief UPDATED May 28, 2019
SIM100 Module Datasheet UPDATED June 22, 2020
SIM100 Safety Manual UPDATED May 14, 2019
SIM100 dbc file UPDATED December 9, 2019
SIM100 3D Step File for the SIM100MOD
SIM100 Quick Start Guide UPDATED Nov. 22, 2017
SIM100 CAN 2.0B Protocol Document UPDATED March 11, 2020
SIM100 YouTube Video