Kronos Series 3
11
2.3 Power Connections
There are two power supply options available for Kronos clocks, a wide range and a low voltage option.
The label on the unit’s top cover shows the installed power supply (see examples in Figure 2).
Make sure that the voltage provided by the power source is within the limits specified
in Table 35. Do not proceed with the installation until you are sure that the correct power
source is being used.
Figure 2: Power supply labels
All power connections should use 16 AWG (1.5mm
2
) insulated flameproof flexible cables and use the
header connector supplied with the clock. To reduce the risk of electrical shock, pre-insulated pin terminals
should be used on the ends of the power connections.
If using a clock with redundant power supplies, repeat the above steps for the second power supply.
A 16 AWG (1.5mm
2
) ground lead shall be connected to the terminal marked with the
protective ground symbol to protect the operator against the risk of electrical shock.
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