Liebert 4000, 3000, 6000 A, 1500 Fuses, Test points, Equalize voltage and duration settings

Figure 28 Equalize voltage and duration settings

TIMER

Switch # 1 2 3 4 5 6

OFF ON

1

2

VOLT

Switch # 1 2 3

10 sec.

20 sec.

38 sec.

1.25 h

0.6V

1.3V

1.9V

2.6V 1

3

4

5

6

Fuses

3.0 h

5.0 h

LOP enabled

: switch in the ON position

3.2V

3.9V

4.6V

2

3

ON OFF

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.

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

Test points

Three sets of test points for applications as described in Table 38.

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

Operation 31