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GRAVITAS SABRE SERIES
INSTALLATION &OPERATING MANUAL
Manual No. SABRE-4 Page 35 11/27/07 sabre-man
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Refer to Figures 20 & 21 for a pictorial view of the DC Input connections.
A. Attach Bat+ cables to Bat+ Bus Bar on inverter backplane.
B. Attach Bat- cables to Bat- Bus Bar on inverter backplane.
Note that the maximum input current to each shelf could be as high as 67A at minimum input voltage and
maximum output power when using the INV1548 or INV1548H modules.
Each inverter shelf should be individually supplied with it’s own DC feed via a suitably sized breaker to ensure
maximum sufficient protection for the cables and also to maximize the overall system fault-tolerance.
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Refer to Figures 20 & 21 for a pictorial view of AC input connections.
A. Inverter Shelf only.
Attach the Mains Line to the Inverter Input AC Line terminal on the Inverter shelf backplane.
Attach Mains Neutral to the Output Neutral bus bar on the inverter shelf backplane.
B. AC Distribution Unit not installed. STS installed.
Attach the Mains Line to the STS Input AC Line terminal on STS shelf backplane.
Attach Mains Neutral to the Output Neutral bus bar on the inverter shelf backplane.
C. AC Distribution Unit installed.
Attach the Mains Line and Neutral to the AC input terminals Line and Neutral.
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Refer to Figures 20 & 21 for a pictorial view of AC output connections.
Only when the MBS is at the IBP or the MBP two position and the STS module is removed from the rack, input breaker
will control the output of the system.
A. Inverter shelf only.
Attach the AC Output Line to AC Output Line bus bar on inverter shelf backplane.
Attach the AC Output Neutral to the AC Output Neutral bus bar on the inverter shelf backplane.
Note: The Neutral will be lifted by a bolt as shown in the below.
Note that cables employed for the AC output connections should be either 600V rated double insulated equipment wire
or multicore cable of suitable size to carry the maximum expected load current.
GND