 |
|
Finally, operational tests and
maintenance checks should be performed regularly. Testing
for line failure recognition should be conducted monthly,
and testing for full power failure shut down and restore
capability should be conducted quarterly.
|
|
Long-term
interruptions |
Long-term power failures can last
a few hours to several days. In this case alternate long-term
power generation equipment is needed. This can come in the form
of portable power generators or generators that have been
installed as part of a buildings infrastructure. These generators
are powered by diesel, gasoline, or propane and can continuously
supply electricity to a building's mission critical systems for
up to a month.
|
|
Such standby power systems (SPSs) typically generate
electricity in the 152000kw range. SPSs can be triggered
into operation either manually or automatically. In the
manual operation, a user starts up the SPS and, once it has
reached speed. manually switches it into operation.
Automatic SPSs switch into operation when the power failure
has been detected for a specific period of time and
switches out once power is restored. This switch-in time
should be less than the UPS dropout time; otherwise, systems
and networks will be experience a short-term outage window. |
|
Only experienced personnel, with the aid of electricians,
building management personnel, engineering contractors, and
equipment vendors should undertake the selection,
installation, and testing of SPSs. |
|
The inclusion of an SPS into an enterprise's power management
plan can significantly reduce problems associated with complete
loss of power. The cost of an SPS typically is between $10,000
and $50,000. Emergency generators also can be rented in case of
a prolonged outage; however, the need for a licensed
electrician to connect the generator and approval of the
buildings manager are all contingent on its use.
5
TOP |
|
A GROWING NEED |
|
The experience of a worst-case
failure to reproduce or recreate lost data or equipment may
far exceed the cost or time needed to implement a good power
protection plan. power failures are most often unpredictable,
and are often disastrous when they do occur, so enterprises
without power protection strategies in place need to implement
them before it's too late. |
|
According to another recent study in LAN Times and Business
Systems Magazine, as well as a report from Contingency Planning
Research, half of all Computer problems and one third of all
data loss can be attributed to power problems. One report from
Sentry Market Research, published in 1994, estimates the
downtime cost for a mid-sized LAN to be approximately 18,000 per
hour. At This rate, an investment in power protection can pay
for itself after few power problems.
|
|
What is UPS and how does it work?
|
|
PCM UPS is an advanced
uninterruptible power system (UPS) consisting of a battery
source, an inverter and control equipment. Its main purpose is
to prevent various power viruses mentioned above from damaging
your equipment and data.
|
|
When Ac Power is present, UPS continuously filters small
Fluctuations. When AC power fails, it employs it internal
maintenance-free battery to supply back-up power without
interruption. There are two classifications of UPS-Rotary and
Static. A rotary UPS is a generator converting fuels into
electrical energy. A static UPS uses an electronic inverter to
convert chemical energy in battery into electrical energy.
|
|
5
TOP
1 |
2 |
3
| 4 | 5 |
|
|
|
