4
Line Power
Power Monitoring Devices
16 TSQ Quantum XLS and TSQ Quantum GC Preinstallation Requirements Guide Thermo Scientific
Power Monitoring Devices
Several devices are available to monitor the quality of your line power.
These devices provide a continuous record of line performance by analyzing and printing out
data on the three most common voltage disturbances: slow average, sag and surge, and
transient.
In the first two cases, the duration and the amplitude of the disturbance are indicated by time
interval recording. A power line disturbance analyzer is a device capable of detecting and
recording most types of line power problems. The Dranetz™
1
system is an example of a
suitable analyzer. Power line analyzers can be rented from electrical equipment suppliers.
Monitor the power line 24 hours a day for seven consecutive days. If inspection of the
printout indicates disturbances, terminate the test and take corrective action. Monitor the
power again as previously described.
Power Conditioning Devices
You can correct a line voltage problem using various line voltage conditioning devices. If you
have good regulation but the power line disturbance analyzer shows transient voltages, then an
isolation/noise-suppression transformer should resolve the problem. If there are both transient
and regulation problems, consider power conditioners, such as a buck/boost transformer, that
can control these problems.
When the line voltage is free from voltage sags, surges, and impulses but is more than
10 percent outside of the voltage specifications, a buck/boost transformer can lower (buck
10 percent) or raise (boost 10 percent) the line voltage.
Each buck/boost transformer is encased in a metal housing approximately 13 × 13 × 26 cm
(5 × 5 × 10 in.) and is equipped with a 2 m (6 ft) power cable. To order the buck/boost
transformer kit (P/N OPTON-01460), contact Thermo Fisher Scientific San Jose, and then
have your electrician install the buck/boost transformer before you start the installation of
your system. The installation instructions for the transformer are included.
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Thermo Fisher Scientific does not endorse any power monitoring company, nor does it endorse products other
than its own. Companies and products listed in this guide are given as examples only.
CAUTION Any conditioning devices installed with your system must be able to handle
the potentially high currents that are drawn during the initial startup of the system. For
example, forepumps can draw as much as 30 A during startup. Contact your service
engineer for more information.
Note For compliance and safety, ensure that your power conditioning devices are
certified by recognized domestic and international organizations, such as UL, CSA, TÜV,
and VDE.
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