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Comparison Legrand Keor DC vs Eaton 3S Mini 36W

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Legrand Keor DC
Eaton 3S Mini 36W
Legrand Keor DCEaton 3S Mini 36W
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The output is one cable with 4 adapters included. 4 working modes: 9V, 12V, 15V, 19V
Mini UPS designed for low voltage electronics
The output is one cable with 4 adapters included. 4 working modes: 9V(3A), 12V(3A), 15V(2.4A), 19V(1.89A)
Mini UPS designed for low voltage electronics
Typelow voltage UPS (router, camera)low voltage UPS (router, camera)
Form factorstandard (flat)standard (flat)
Full load operating time11 min
Half load operating time32 min
Input
Input voltage1 phase (230V)1 phase (230V)
Input voltage range90 – 264 В90 – 264 В
Bypass (direct connection)is absentis absent
Output
Output voltageDC (constant voltage)DC (constant voltage)
Rated output power25 W36 W
Battery
Total battery capacity2.2 Ah4.4 Ah
Battery typeLi-ion (lithium-ion)Li-ion (lithium-ion)
Full charge time180 min240 min
Cold start
Protection
Protection
short circuit protection
overload protection
noise filtering
short circuit protection
overload protection
noise filtering
General
Operating temperature0 – 35 °C0 – 35 °C
Noise level25 dB
Dimensions (HxWxD)28.5x95x95 mm96x30x136 mm
Weight0.3 kg0.37 kg
Added to E-Catalogaugust 2022august 2022
Glossary

Full load operating time

UPS continuous operation time from a fully charged battery when connected to a load with a power equal to the UPS output power (maximum or effective, depending on the type of load, see the relevant paragraphs for details). For a UPS designed to work with a home or office PC, a time of about 10-15 minutes is considered sufficient, this is enough to save data and complete work. To power servers, it is worth using devices with an operating time of 20 minutes or more.

Half load operating time

UPS continuous operation time from a fully charged battery when connected to a load with a power equal to half the output power of the UPS (maximum or effective, depending on the type of load, see below for details). The operating time with such a load is much longer than for a full load, and even in the simplest models it can reach 20-30 minutes.

Rated output power

The effective output power of the UPS is, in fact, the maximum active power of the load that can be connected to the device.

Active power is consumed directly for the operation of the device; it is expressed in watts. In addition to it, most AC devices also consume reactive power, which is "wasted" (relatively speaking) is spent by coils and capacitors. Apparent power (denoted in volt-amperes) is precisely the sum of active and reactive power; it is this characteristic that should be used in accurate electrical calculations. See "Maximum output power" for details; here we note that when selecting a UPS for a relatively simple application, it is quite possible to use only effective power. This is at least easier than converting the watts claimed in the characteristics of the connected devices into full power volt-amps.

The most modest modern "uninterruptibles" give out less than 500 watts. 501 – 1000 W can be considered an average value, 1.1 – 2 kW is above average, and in the most powerful models this figure exceeds 2 kW and can reach very impressive values (up to 1000 kW or more in some industrial class UPS).

Total battery capacity

The capacity of the battery installed in the UPS. For models with multiple batteries, this is both the total working capacity and the capacity of each individual battery: the batteries in such devices are usually connected in series, so that their total capacity corresponds to the capacity of each individual cell.

Theoretically, a higher battery capacity means the ability to power loads of a given capacity for longer. However, in fact, this parameter is more of a reference than practically significant. The fact is that the actual amount of energy stored by the battery depends not only on the capacity in amp-hours, but also on the voltage in volts; this voltage is often not specified in the characteristics, despite the fact that for accurate calculations it must be known. So when choosing, you should focus on more "close to life" characteristics — first of all, on the directly claimed operating time in different modes (see above).

Full charge time

The time it takes to fully charge the UPS battery. Note that in this case, this time is calculated according to special rules: not from 0 to 100% of the charge, but from a state in which it is impossible to maintain half the load, up to 90% of the charge. Of course, a full charge will take a little longer. However, this data is closer to practice than the “from 0 to 100%” calculation: the inability to work at half load makes the UPS practically useless, and this condition can be taken as zero, and 90% of the battery is already able to provide a good guarantee in case of a power failure.

Cold start

The ability to turn on the uninterruptible power supply in the "cold start" mode.

A cold start is a turn-on mode in which there is no external power, and the load connected to the UPS is powered immediately from the uninterruptible battery (which, of course, must be charged). This mode is especially useful in emergency cases — for example, if you urgently need to print a document, but there is no light.

Noise level

The maximum noise level produced by the UPS during operation. A noise of 30 dB approximately corresponds to a loud whisper, 40 dB to a conversation at a distance of several metres (it is models up to 40 dB that can be considered quiet UPS), 50 dB is considered the maximum noise level that does not create discomfort. The redundant power supplies are the least noisy, and inverter power supplies are the noisiest (see "Type"). In general, the lower the noise level, the more comfortable the use of the UPS, however, for devices installed in offices where people do not stay permanently (for example, server rooms), this parameter is not critical.
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