SENS MicroGenius S2/S4 Technical Manual
15
8
10
0.63
11
22
6
16
0.4
18
36
4
25
0.25
29
58
2
35
0.16
45
90
45
10
6
1
6
12
8
10
0.63
9
18
6
16
0.4
14
28
4
25
0.25
22
44
2
35
0.16
35
70
50
10
6
1
5
10
8
10
0.63
8
16
6
16
0.4
13
26
4
25
0.25
20
40
2
35
0.16
31
62
60
8
10
0.63
7
14
6
16
0.4
10
20
4
25
0.25
17
34
2
35
0.16
26
52
The above lengths consider the resistance of the battery and cables only and do not take into account any
additional interconnects. The above lengths are for operation at 25°C/77°F. For high temperature installations
(40°C/104°F) increase wire gauge by 10%.
6.2.
Grounding Instructions and Connection
6.2.1.
Charger must be grounded to reduce risk of electric shock. The charger must be connected to a
grounded, metal, permanent wiring system, or an equipment-grounding conductor (earthing
conductor) must be run with the circuit conductors and connected to equipment-grounding
terminal on charger.
6.2.2.
Connect the equipment grounding conductor to the ground lug in the charger (see Figures 1-3).
This lug is marked with the ground symbol. This should always be the first wire connected and the
last wire disconnected.
6.3.
DC Connection
Ensure that any battery disconnect devices in the system, if used, are opened (batteries disconnected
from DC bus). Connect the DC output conductors to the DC output terminal block/breaker in the charger
(see Figures 1-3). Chargers with multiple outputs share a common negative connection (see Figure 4).
Always observe proper polarity of the DC output leads. Always connect the output leads in the following
order – charger output to ungrounded battery terminal, followed by charger output to grounded battery
terminal. If the battery must be disconnected for service, remove the output wiring in the reverse order.
Tighten connections to torque specified in Table 3. Route DC wiring at least ¼ inch (6 mm) away from AC
wiring, alarm wiring, and the circuit board.
WARNING:
A MAXIMUM OF 40 VOLTS MAY BE APPLIED AT THE OUTPUT
TERMINALS. HIGHER VOLTAGE MAY DAMAGE THE CHARGER.
