Liebert 1500 - Manual (Page 37)

Operation 31
Figure 28 Equalize voltage and duration settings
Fuses
Thirty-four fuses for circuit protection as described in Table 37. Except for the ABS fuse, which is
small tube type (9/32” dia x 1-1/4” long), all fuses are of the QFF type.
Test points
Three sets of test points for applications as described in Table 38.
Table 37 Fuse
Designation Capacity Description
ABS 15 A -48 V supply for the office alarm circuit(s)
ABS ALM 1/2 A Alarm fuse for the above ABS fuse
RC1 to RC24 1-1/3 A -48 V sense supply for the rectifiers of the system
CONV 1/2 A Protection for the internal converter in the controller
METER 1/2 A Protection for the meter and selector panel if so equipped
CHG 1/2 A Protection for internal circuitry of the controller when the CONT rotary switch
is in the CHG VOLT position
Spare 1 and 2 0 to 5 A For external loads as required (ex.: Helios Monitor)
BAT 1/2 A Protection for internal circuitry of the controller when the CONT rotary switch
is in the BAT VOLT position
CONT 1-1/3 A Protection for the internal circuitry of the controller
Plus one unused position
Table 38 Test points
Designation Description
CAL OUT + and - To connect an external meter when calibrating the LED readout for current readings
VOLT + and - To connect an external meter when adjusting the BOD, LF, LV, HF, HV, HVSD, LVD and
LVR thresholds
PWR EXT + and - The connect an external power supply when adjusting the LVR threshold
VOLT
Switch # 1 2 3
0.6V
1.3V
1.9V
2.6V
3.2V
3.9V
4.6V
: switch in the ON position
TIMER
Switch # 1 2 3 4 5 6
10 sec.
20 sec.
38 sec.
1.25 h
3.0 h
5.0 h
LOP enabled
1
2
3
4
5
6
OFF ON
ON OFF
1
2
3