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- Newsgroups: comp.sys.amiga.reviews
- From: barrett@cs.umass.edu (Daniel Barrett)
- Subject: REVIEW: American Power Conversion Smart-UPS 400
- Message-ID: <1992Sep2.175448.15156@menudo.uh.edu>
- Followup-To: comp.sys.amiga.hardware
- Keywords: hardware, UPS, commercial
- Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
- Reply-To: barrett@cs.umass.edu
- Organization: The Amiga Online Review Column - ed. Daniel J. Barrett
- Date: Wed, 2 Sep 1992 17:54:48 GMT
-
-
-
- PRODUCT NAME
-
- Smart-UPS 400
-
-
- BRIEF DESCRIPTION
-
- The Smart-UPS 400 is an uninterruptable power supply (UPS) which
- protects my Amiga against power outages, dropouts, and power surges.
-
-
- AUTHOR/COMPANY INFORMATION
-
- Name: American Power Conversion
- Address: 132 Fairgrounds Road
- PO Box 278
- West Kingston, RI 02892
-
- Telephone: (401) 789-5735
-
-
- LIST PRICE
-
- Unknown, but typical street price is $320-450 (US dollars).
-
-
- SPECIAL HARDWARE AND SOFTWARE REQUIREMENTS
-
- None, except that the total power and current rating of your
- computer system should be within the specifications of the UPS.
- (Even so, my system is rated "higher" than the specs, but everything
- still works. See below.)
-
-
- REVIEW
-
- The electrical service in my neighborhood is very flakey. We have
- power outages maybe every 3 months, and power dropouts once a month, where
- the electricity shuts off or dips for about 1-2 seconds. Of course, all
- this activity is dangerous for my Amiga, so I bought an Uninterruptable
- Power Supply (UPS), and life has been wonderful ever since.
-
- The APC Smart-UPS 400 is a "desktop" model, which means it sits
- underneath the computer and/or monitor. It is made of sturdy metal and
- supports my 56-pound (26 kg) monitor with no difficulty. The unit is dead
- silent, having no internal fan. (Actually, if you listen very, very
- carefully with the computer and monitor turned off, you can detect a tiny,
- high-pitched whine. It is completely unnoticable when the computer is on.)
-
- There are 4 three-prong electrical outlets built in. One of them is
- a special MASTER outlet. If you desire, you can turn on the entire UPS by
- turning on the device plugged into the MASTER outlet. For example, if you
- plug your computer into the MASTER outlet, then your computer's own on/off
- switch will turn the whole UPS on and off! I don't use this feature; I
- just use the UPS's on/off switch because it's more accessible than my
- Amiga's.
-
- There is also a computer interface to the UPS so you can automate
- shutdowns. To my knowledge, there is no Amiga software that supports this,
- though.
-
-
- PERFORMANCE
-
- The Smart-UPS 400 has worked perfectly since I bought it 4 months
- ago. It has protected my Amiga 3000T (280 watt power supply), 17" color
- monitor, and SupraFAXmodem completely from these power outages and
- dropouts. You can literally pull the UPS's electrical cord out of the wall
- outlet, and everything keeps running without a glitch. Before I got the
- UPS, my monitor image used to "jump" when I used an electric pencil
- sharpener in the same room. Now, I can sharpen pencils, run a vacuum
- cleaner, do soldering, etc., without disturbing the computer.
-
- When the power goes out in my home, the UPS has enough backup power
- to keep my setup running for about 7 minutes. This amount of time will vary
- greatly depending on how much power your particular setup draws. According
- to the test diagnostics, my system uses approximately 70% of the UPS's
- capacity.
-
- The UPS will beep once every 30 seconds while power is out
- (this gets annoying sometimes), and then once per second during its
- last 2 minutes of life (so you know to shut things down now).
-
- The documentation explicitly states that this UPS must NOT be
- used with a laser printer. "Laser printers require too much power
- and will trip the UPS circuit breaker," it says.
-
-
- SPECIFICATIONS
-
- Output power for the 120VAC model:
-
- Nominal voltage: 117 VAC
- Output current: 3.3 Amps AC max
- Maximum power: 400 VA computer @ p.f. = 0.63 or
- 250 Watts resistive load
- Waveform: Sinewave, max distortion 5% @ full load
- Frequency: 50/60 Hz +- 1 Hz
-
- Transfer time: 2 ms typical, 3.5 ms max
- Battery type: maintenance-free sealed lead calcium,
- spillproof
- Recharge time: 5 hours from total discharge
-
- Protection:
- Input: circuit breaker, 5 Amp at 125 VAC
- Surge: 270 Joule, 6500 Amp, zero clamping
- response time; tested to IEEE 587,
- Categories A and B, and IEC 664;
- Classes I, II, III, and IV.
- Noise: Full-time EMI/RFI filter
- Output: electronic overcurrent protection
- (inverter operating).
-
- Dimensions: 15.5" long x 11.9" wide x 2.25" high
- (39.4 cm x 30.2 cm x 5.7 cm)
- Weight: 17 pounds
- (7.7 kg)
- Color: platinum (similar to Amiga beige)
-
-
- SPECIFICATIONS vs. REALITY
-
- Observant people will notice that my computer has a power supply
- rated higher (280 watts) than the Smart-UPS 400 is (250 watts). In
- addition, my system's amperage is rated about 6.5 amps, which is higher than
- the 3.3 amps of the UPS. Even so, the UPS works fine, operating at only
- 70% of its capacity!
-
- I called APC's customer support (800) number to ask about this.
- They said that the amp rating on the computer is most likely very
- conservative -- it won't use 6.5 amps except maybe at the instant you
- power it on. (This is called "in-rush current.") In addition, just
- because a computer's power supply is rated at 280 watts doesn't mean that
- the full 280 watts is being *used*.
-
- In other words, the UPS is fine for my system.
-
-
- LIKES AND DISLIKES
-
- The Smart-UPS 400 is extremely quiet (no fan) and works perfectly.
- I have no complaints.
-
-
- COMPARISON TO OTHER SIMILAR PRODUCTS
-
- I bought this particular UPS for several reasons:
-
- (1) Our computer science department uses this brand for
- its workstations, and one of the systems administrators
- recommended them as reliable.
-
- (2) It uses sine wave, not square wave, power. I don't
- know the techincal details, but sine wave is supposed
- to be better (and usually more expensive). According
- to one knowledgable Net friend,
-
- "...some of the products on the market are junk,
- providing square wave output and very poor
- regulation and inadequate and unsynchronized
- switchover. With UPS systems, you DO get what you
- pay for. Be [careful] of the $200 units."
-
- (My friend recommended Safe Power Systems as a good UPS
- manufacturer.)
-
- (3) My local dealer carried it. I like to support local
- dealers when possible. (And when they deserve it. :-))
-
- (4) All I need is enough power to prevent unexpected shutdowns.
- That is, if power goes out, I need a minute or two to turn
- things off myself. If I needed 30-60 minutes of backup
- power, this unit would not be sufficient.
-
-
- SUPPORT
-
- I contacted the company once to ask what some of the specifications
- mean. The technical support person was extremely friendly, courteous,
- and professional. He answered all my questions patiently.
-
- They have a toll-free (800) number for customer service.
-
-
- WARRANTEE
-
- 2 years, covering defects in materials and workmanship.
- The warrantee applies only to the original purchaser.
-
-
- CONCLUSIONS
-
- What can I say -- it works!! It was trivial to set up, worked
- the first time, and has worked without a problem for 4 months. I
- recommend this UPS without hesitation.
-
-
- COPYRIGHT NOTICE
-
- This review is Copyright 1992 Daniel J. Barrett. All rights
- reserved. It may be freely distributed according to the terms of the
- comp.sys.amiga.reviews Charter.
-
- ---
-
- Dan Barrett, Moderator, comp.sys.amiga.reviews
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