Installation
Sageon II Bulk Product Manual
PM990-5201-00, Issue 6
3-7
3.3.3
Surge protection requirements
The rectifiers are internally protected for surges up to 6kV/3kA. For higher levels of protection, particularly for sites with
high incidence of lightning or switching surges, additional surge protection is required on the AC feed to the Power Module.
Typically, surge arrestors with a 10kA-40kA rating are required with the highest level of protection being provided when
arrestors are connected between phase-neutral (x3 phases) and between phase/neutral-earth (x 3 phases).
Other arrangements (for 3-phase “Y”) with similar levels of protection are also possible as shown below. The voltage rating
of the arrestor should be selected based on the maximum AC voltage likely to appear on the line. The arrestor should limit
the voltage to <1200V – 1400V at the rated maximum pulse current.
Figure 3-11 Surge Protection
3.4
BULK LOAD CONNECTIONS
Figure 3-12 Bulk Load Connections
A bulk load can be either a single large load, or a cable connection to an additional, external DC distribution unit. There are
four 3/8” holes located on 1” centers available for securing four cables, with double-hole lugs.
3.5
BATTERY CONNECTIONS
The cables can be either brought out through the cut out adjacent to the return bar, or through the breakout slot in the top
cover.
