Ross SRG-4400, User Manual

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2–10 • Physical Installation SRG-4400 User Manual (Iss. 06)
Connecting Power
The SRG-4400 operates from a single-phase power source with the neutral conductor at or near
earth ground. The line conductor is fused for over-current protection. A protective ground
connection through the grounding conductor in the power cord is essential for safe operation.
Safety earth studs are also provided for earth bonding the chassis if you so require.
Your SRG-4400 includes the N+1 power option (PS-4400), you need to provide two power
connections. For full power security, these should be on separate, independent and secure power
grids. However, you still gain the security of power supply failure redundancy if you use the same
power grid for both connections.
AC Power Requirement
Check that your location provides the proper electrical power requirements as listed in Table 2.2 .
Connecting the Power Cable
Connect the power cable to the instrument first, and then connect it to the AC power source. Note
that connecting a live power cable causes the instrument to power on.
Replacing a Power Supply
To replace a power supply, you must remove the faceplate from the chassis to gain access to the
power supplies. This section summarizes how to replace a power supply in your SRG-4400.
To replace a power supply
1. Remove the four front screws from the control panel faceplate.
Figure 2.7 Removing the Faceplate Screws
Table 2.2 AC Line Power Requirement
Parameter Description
Line Voltage Range
120-230V
Line Frequency
50-60Hz
Maximum Power (Single PSU)
31VA (~14W - calculated)
<130mA @ 230VAC
<210mA @ 120 VAC
Maximum Power (Dual PSU)
46VA (~21W - calculated)
<130mA @ 230VAC
<210mA @ 120 VAC
Caution
— The SRG-4400 does not have a power switch.
SRG-4400 SYNC GEN