Vertiv™ Return Bus Load Shunt Monitoring Cable Assembly Kit Installation Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
1Vertiv™ Return Bus Load Shunt Monitoring Cable Assembly
Kit
1.1 Kit Description
These instructions provide a step-by-step procedure to field install this kit into Power System Spec. No. 582127200. Installation of this
kit in other equipment should not be attempted.
This kit provides a wire harness to reverse the shunt reference voltage to the SM-DU Shunt Monitoring Module located in the primary
power bay. The SM-DU module mounted in the primary power bay contains connections for the internal load shunts provided in each
power bay (the system can consist of up to three power bays). The SM DU module also provides two (2) additional external shunt
monitoring inputs. When used as shipped, any external shunt needs to be installed in the hot (-48V) bus. Use this kit to connect up
to five (5) external shunts located in the return bus. This requires all internal shunts connected to the SM-DU module to be
disconnected and the associated shunt leads isolated.
1.2 Kit Contents
Table 1.1 lists the items furnished with this kit. Before starting the procedure, check the items furnished against those listed to ensure
that there are no shortages.
Table 1.1 Kit Contents
Qty. Description P/N
1 Reverse Shunt Reference
Voltage Wire Harness Pigtail 559353
1 These Instructions IM559404
1.3 Tools and Material Required
Table 1.2 lists the items required to install this kit.
Table 1.2 Tools and Material Required
Description
Small Straight-Blade Screwdriver to Disconnect and Connect Shunt Leads.
Material to Tie-Back and Insulate Existing Shunt Leads.
1.4 Installation Procedure
THESE INSTRUCTIONS SHOULD BE READ THROUGH COMPLETELY BEFORE INSTALLING THE KIT.
The following is a step-by-step procedure to install the kit. The procedure has been written for ease of use and to minimize the
possibility of contact with potentially hazardous energy. This procedure should be performed in the sequence given, and each step
should be completely read and fully understood before performing that step. Observe all “Important Safety Instructions” presented at
the beginning of this document as this procedure is being performed. As each step of the procedure is completed, the box adjacent
to the respective step should be checked. This will minimize the possibility of inadvertently skipping any steps. If the step is not
required to be performed for your site, also check the box to indicate that it was read.
