4
Line Power
Quality of Power
Thermo Scientific TSQ Quantum XLS and TSQ Quantum GC Preinstallation Requirements Guide 15
Quality of Power
The quality of power supplied to your TSQ Quantum XLS or TSQ Quantum GC system is
very important. The line voltage must be stable and within the specifications listed in this
guide. The line voltage must be free of fluctuations due to slow changes in the average voltage,
surges, sags, or transients.
Table 6 contains definitions for the three most common voltage disturbances.
Constant high line voltage, impulses, or surges in voltage can cause overheating and
component failures. Constant low line voltage or sags in voltage can cause the system to
function erratically or not at all. Transients, even a few microseconds in duration, can cause
electronic devices to fail catastrophically or degrade, eventually shortening the lifetime of your
system. To keep your system running effectively, it is important to establish the quality of the
line voltage in your laboratory before installing the TSQ Quantum XLS or TSQ Quantum
GC system.
Uninterruptible Power Supply
Systems installed in areas with intermittent line power must have an agency
recognized (NRTL approved), uninterruptible power supply installed.
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Technical Assistance
For additional assistance in monitoring line power or selecting a line
conditioner, contact Thermo Fisher Scientific.
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Table 5. Line power preinstallation requirements (Sheet 3 of 3)
Requirement Page
Table 6. Common voltage disturbances
Voltage disturbance Definition
Slow average A gradual, long-term change in average root mean square
(RMS) voltage level, with typical durations greater than 2 s
Sags and surges Sudden changes in average RMS voltage level, with typical
durations between 50 μs and 2 s
Transients or impulses Brief voltage excursions of up to several thousand volts with
durations up to 50 μs
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