Cellwatch Frontier - Page 50

Cellwatch Frontier System Installation & User Manual
Section I – Installation Guide-50
The DCM6-R is certified to work up to 300 volts. For systems with a string voltage less than 300 volts,
use one DCM6-R connected directly across the string. When the string voltage is greater than 300 volts,
we supply two DCM6-R’s and then wire each DCM across half the string. The ripple measurement is
then summed from each DCM. Connecting this way ensures we a balanced load on the whole string.
The DCM6-R-600 is certified to work up to 600 volts and is another option for string voltages of greater
than 300 volts.
When connecting or disconnecting to any systems greater than 100 volts DC there are significant
safety risks & precautions should be taken when attaching this device.
As the DCM6-R is intended to be connected cross the string, it is important to be aware of the string
potential.
 Use appropriate Hazard Risk Category PPE (level 2-4) as recommended by NFPA 70E when
installing the DCM6-R on any voltage battery string.
 Some sites may require higher level PPE than what is recommended here, so check with the site
safety officer when planning the work.
 Remember: When disconnecting the DCM6-R from the wiring harness, be sure to open the
fuse to power down the system. If the fuse is closed, the wires still carry the full string
potential, even if the DCM is not attached!