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Page 5

POWERING TECHNOLOGY

Manual No. MS0027-MAN rev. 4

guardian_access_3u_ms27-man-rev4-0817.indd

FIGURES

Figure 2-1 Power System Overview .............................................................................................8

Figure 2-2 Principal of Operation .................................................................................................9

Figure 2-3 Power System With Extension Rear and Top Cover Kit ..........................................10

Figure 2-4 Power System with Rear and Top Cover Kit ............................................................10

Figure 2-5 Guardian Rectier .....................................................................................................14

Figure 4-1 System Mounting - Cabinet ......................................................................................24

Figure 4-2 System Mounting - Open frame / relay rack .............................................................25

Figure 4-3 Remove Top Cover ...................................................................................................26

Figure 4-4 Remove Top and AC Input Cover .............................................................................27

Figure 4-5 Cable Entry Options ..................................................................................................27

Figure 4-6 Grounding Connection ..............................................................................................28

Figure 4-7 Grounding Connection with Extended Rear Cover - Two Point ..............................28

Figure 4-8 Grounding Connection with Extended Rear Cover - Single Point ...........................29

Figure 4-9 AC Input Terminal Block (1-phase) ..........................................................................30

Figure 4-10 AC Input Terminal Block (3-phase) ..........................................................................30

Figure 4-11 DC Load Connection ................................................................................................31

Figure 4-12 Battery Connection ...................................................................................................32

Figure 4-13 PCC External Board ..................................................................................................33

Figure 4-14 ACC External Board .................................................................................................33

Figure 4-15 ACC Relay Board .....................................................................................................34

Figure 4-16 2-block Symmetry Measurement (for illustration only) ...........................................35

Figure 4-17 4-Block Symmetry Measurement (for illustration only) ..........................................35

Figure 4-18 Temperature Sensor Connection ...............................................................................36

Figure 4-19 RS232 Connection ....................................................................................................37

Figure 4-20 Rectier Installation ..................................................................................................38

Figure 7-1 Unlocking and Removing the Controller ..................................................................49

Figure 7-2 Replacing a Surge Protection Module ......................................................................50

TABLES

Table 4-1 Recommended Electrical Cable Size ........................................................................23

Table 5-1 Float/Boost Charge Voltages .....................................................................................41

Table 5-2 Commissioning Record .............................................................................................43

Table 6-1 Connection Torque Setting Check ............................................................................44

Unipower Guardian Access 3U User Manual

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