Black Box SP214A-R3 Manual De Usuario
724-746-5500
blackbox.com
BLACK BOX
®
5 of 5
2/17/2014
#26934
NOTE: Note_DS09
Power problems.
Sags
The Threat — A sag is a decline in the voltage level. Also
known as “brownouts,” sags are the most common power
problem.
problem.
The Cause — Sags can be caused locally by the start-up
demands of electrical devices such as motors, compressors,
and elevators. Sags may also happen during periods of high
electrical use, such as during a heat wave.
and elevators. Sags may also happen during periods of high
electrical use, such as during a heat wave.
The Effect — Sags are often the cause of “unexplained”
computer glitches such as system crashes, frozen keyboards,
and data loss. Sags can also reduce the efficiency and lifespan of
electrical motors.
Blackouts
and data loss. Sags can also reduce the efficiency and lifespan of
electrical motors.
Blackouts
The Threat — A blackout is a total loss of power.
The Cause — Blackouts are caused by excessive demand on
The Cause — Blackouts are caused by excessive demand on
the power grid, an act of nature such as lightning or an earth-
quake, or a human accident such as a car hitting a power pole or
a backhoe digging in the wrong place.
quake, or a human accident such as a car hitting a power pole or
a backhoe digging in the wrong place.
The Effect — Of course a blackout brings everything to
a complete stop. You also lose any unsaved data stored in RAM
and may even lose the total contents of your hard drive.
and may even lose the total contents of your hard drive.
Spikes
The Threat — A spike, also called an impulse, is an instanta-
neous, dramatic increase in voltage.
The Cause — A spike is usually caused by a nearby lightning
strike but may also occur when power is restored after a blackout.
The Effect — A spike can damage or completely destroy
electrical components and also cause data loss.
Surges
Surges
The Threat — A surge is an increase in voltage lasting at least
1
⁄
120
of a second.
The Cause — When high-powered equipment such as an air
conditioner is powered off, the excess voltage is dissipated though
the power line causing a surge.
the power line causing a surge.
The Effect — Surges stress delicate electronic components
causing them to wear out before their time.
Noise
Noise
The Threat — Electrical noise, more technically called electro-
magnetic interference (EMI) and radio frequency interference
(RFI), interrupts the smooth sine wave expected from electrical
power.
(RFI), interrupts the smooth sine wave expected from electrical
power.
The Cause — Noise has many causes including nearby light-
ning, load switching, industrial equipment, and radio transmitters.
It may be intermittent or chronic.
It may be intermittent or chronic.
The Effect — Noise introduces errors into programs and data
files.
Technically Speaking
Item
Code
Rackmount Power Strips
20-Amp
SP194A-R2
15-Amp
SP196A-R2
Cabinet Power Strips
15-Amp
48",
10-Outlet
SP197A-R2
70",
11-Outlet
SP198A-R2
77",
12-Outlet
SP199A-R2
20-Amp
24",
8-Outlet
SP214A-R3
48",
10-Outlet
SP216A-R2
70",
11-Outlet
SP217A-R2
77",
12-Outlet
SP218A-R2
Rackmount Power Supplies
with Surge Suppression
20-Amp,
switchless
SP470A-R3
20-Amp, with on/off switch
SP472A-R3
What’s included
SP194A-R2, SP196A-R2,
SP194A-R2, SP196A-R2,
SP470A-R3, SP472A-R3:
✦
Rackmount Power Strip
✦
(4) 10-32 cuphead screws
✦
(4) 12-24 cuphead screws
✦
Specification sheet
SP197A-R2–SP199A-R2,
SP216A-R2–SP217A-R2:
✦
Cabinet Power Supply Strip
✦
(3) clips, (3) screws, (3) nuts
✦
Specification sheet
SP214A-R3:
✦
Cabinet Power Supply Strip
✦
(2) clips, (2) screws, (2) nuts
✦
Specification sheet
SP194A-R2
SP472A-R3
SP196A-R2