Description

The Sendyne SIM100MLP is the first high voltage

isolation monitoring device for EV/HEVs capable

of operating correctly even when the battery is

active, and experiencing large voltage variations, no

variations, or even if the battery is not connected.

The SIM100MLP continuously monitors the

isolation resistance between a vehicle’s IT (Isolated

Terra) power system and chassis for deterioration of

isolation and potentially dangerous levels of leakage

current. The module detects not only resistive leakages

but also capacitively stored energy that could be

harmful to human operators.

Due to a proprietary, patented and 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 isolation fault, the unit identifies the

position of the fault in relation to the battery’s

terminals. Battery-connected VX1 (Vp) and VX2 (Vn)

voltage inputs can measure ±1.1 kV (max, see ordering

options for other ranges) in reference to Chassis

(0 V). Communications are achieved via an isolated

CAN 2.0B interface and the unit operates over a wide

temperature range of –40 °C to +105 °C. The Sendyne

SIM100MLP was designed as a component for systems

complying with ISO 6469-3:2011-12, UL 2231-1,

UL2231-2, IEC 61557-A, CFR 571.305 and other ap plicable

standards.

Applications

― Monitoring ungrounded (IT) DC

power systems for hazardous resistive and capacitive

leaks

― Electric & hybrid vehicles

― Charging stations

― Energy storage facilities

― Battery Management Systems