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VGroup.IT Solutions
数据中心与服务器

UPS 与电源保护

为服务器、交换机和监控提供 UPS、接地与浪涌保护,应对停电、傍晚电压不稳和雨季雷击。

UPS 与电源保护

现场常见问题

Power in many parts of Laos, especially in the provinces and at mine sites, brings outages, sags, surges and rainy-season lightning. Equipment without a UPS drops hard, databases get corrupted and power supplies die early. The other case we see a lot: there is a UPS, but its batteries wore out two years ago and nobody noticed, so in a real outage it lasts thirty seconds.

UPS types and when to use them

Type How it works Best for
Offline / standby Switches to battery on outage PCs, small devices
Line-interactive Built-in AVR regulates voltage; transfers to battery in a few ms Switches, NVRs, small offices
Online double-conversion Converts AC→DC→AC continuously; zero transfer time Servers, server rooms, critical loads

For servers and core switches we use online UPS almost every time. It rides through wide voltage swings without dropping to battery at every sag, so the batteries are not worn out by constant cycling.

Sized from real load

We measure actual load in watts rather than reading power-supply labels. We choose a UPS with about 20–30% headroom, then size batteries for the runtime you need. Ten to fifteen minutes is usually enough to shut servers down cleanly. If outages last hours, the answer is a generator with an ATS, not cabinets of extra batteries.

More than a UPS

  • Earthing that has been measured. Without a proper earth, surge protectors cannot do their job
  • SPDs at the main board and sub-boards
  • Data-line lightning protection on LAN or PoE runs going outdoors to cameras or other buildings
  • Network management cards that shut servers and NAS down in order

Tell us what equipment you have and how many minutes it must run, and we will size the UPS and batteries. Or try the UPS runtime calculator on this site first.

功能

Online double-conversion UPS

Steady output with zero transfer time for servers and storage.

AVR & stabilizers

For network cabinets and NVRs: holds voltage through sags and swells.

Automated shutdown

Network cards shut down VMs, NAS and servers in sequence before the battery runs out.

Surge & lightning protection

SPDs on power and data lines, bonded to a proper earth.

Generator integration

UPS, ATS and generator for multi-hour outages, with the generator sized well above the UPS rating.

Battery lifecycle care

Yearly battery tests and replacement before failure. In a hot room, battery life roughly halves.

设计与实施

  1. 1

    Measure power quality and test the earth.

  2. 2

    Total all loads and agree the required runtime.

  3. 3

    Select UPS topology, capacity, batteries and maintenance bypass.

  4. 4

    Install SPDs, earthing, UPS and PDUs.

  5. 5

    Configure shutdown and alerts, then cut the mains for a live test.

适用场景

  • Mine and hydropower sites with an unstable grid and generators.
  • Provincial bank branches keeping ATMs and core banking online.
  • CCTV and switches that must keep recording through outages.
  • Hospitals and labs with voltage-sensitive equipment.

常见系统规模

Edge

适用于: Network cabinets and NVRs

  • 1–3 kVA line-interactive or online UPS
  • Runtime calculation including PoE load
  • Surge protection for outdoor PoE runs
获取报价

Server Room

适用于: 1–4 racks

  • 6–20 kVA online UPS with external batteries
  • Network card and automated shutdown
  • Maintenance bypass and PDUs
获取报价

Facility

适用于: Data center or critical building

  • Modular or parallel N+1 UPS
  • ATS and generator integration
  • Maintenance and battery-testing contract
获取报价

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常见问题

What is the difference between kVA and kW?

kW is real power; kVA is apparent power. Many modern UPSs have a 0.9–1.0 power factor, so a 10 kVA unit may deliver only 9 kW. Always size from the real kW load.

How long do UPS batteries last?

Typical VRLA batteries last about 3–5 years at 25°C. Every 10°C above that roughly halves their life, so a UPS in a 35°C room may need new batteries every two years. Lithium-ion lasts longer and tolerates heat better.

We have a generator. Do we still need a UPS?

Yes. A generator takes 10–30 seconds to start and pick up load, and its output often wanders. The UPS bridges that gap and cleans up the power.

相关指南

相关计算工具

相关解决方案

数据中心与服务器

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