Uninterruptible Power Supplies

Type of UPS:

Standby/Offline

Offers basic protection such as surge protection and battery backup.

Online, double-conversion

Thanks to Wikipedia.

What Pieces Of Equipment Are NOT Suitable To Be Plugged Into A UPS?

A device that exceeds the UPS's VA/Watt rating should not be plugged in, along with high drain devices, medical equipment, and aquatic equipment. An example of such items is shown below:

• Laser printers
• Space heaters
• Copiers
• Paper shredders
• Vacuums
• Curling irons
• Steam cleaners
• Hair dryers
• Kettles

Ultramax

/etc/nut/ups.conf

user = nut
maxretry = 3
[ultramax]
  driver = "nutdrv_qx"
  port = "auto"
  vendorid = "0665"
  productid = "5161"
  product = "USB to Serial"
  vendor = "WCHCH544"
  bus = "003"
  # default.battery.voltage.high = 24
  # default.battery.voltage.low = 1
  override.battery.voltage.high = 27.2
  override.battery.voltage.nominal = 24.0
  override.battery.voltage.low = 21.0
  override.battery.packs = 2
  runtimecal = 300,100,900,50
  chargetime = 21600
  idleload = 10

$ upsc ultramax@localhost

battery.charge: 100
battery.packs: 2
battery.runtime: 3000
battery.voltage: 27.40
battery.voltage.high: 27.2
battery.voltage.low: 21.0
battery.voltage.nominal: 24.0
device.type: ups
driver.name: nutdrv_qx
driver.parameter.bus: 003
driver.parameter.chargetime: 21600
driver.parameter.idleload: 10
driver.parameter.pollfreq: 30
driver.parameter.pollinterval: 2
driver.parameter.port: auto
driver.parameter.product: USB to Serial
driver.parameter.productid: 5161
driver.parameter.runtimecal: 300,100,900,50
driver.parameter.synchronous: auto
driver.parameter.vendor: WCHCH544
driver.parameter.vendorid: 0665
driver.state: quiet
driver.version: 2.8.0-Windows-542-gccfb356
driver.version.data: Mustek 0.07
driver.version.internal: 0.32
driver.version.usb: libusb-1.0.20 (API: 0x1000104)
input.frequency: 50.0
input.voltage: 240.3
input.voltage.fault: 240.3
output.voltage: 240.3
ups.beeper.status: enabled
ups.delay.shutdown: 30
ups.delay.start: 180
ups.load: 13
ups.productid: 5161
ups.status: OL
ups.type: offline / line interactive
ups.vendorid: 0665