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Comparison APC Back-UPS Pro 900VA BR900G-RS 900 VA vs APC Back-UPS Pro 900VA BR900GI 900 VA

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APC Back-UPS Pro 900VA BR900G-RS 900 VA
APC Back-UPS Pro 900VA BR900GI 900 VA
APC Back-UPS Pro 900VA BR900G-RS 900 VAAPC Back-UPS Pro 900VA BR900GI 900 VA
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Typesmartsmart
Form factorstandard (Tower)standard (Tower)
Full load operating time4.6 min4.6 min
Half load operating time16.1 min16.3 min
Switching to battery8 ms8 ms
Input
Input voltage1 phase (230V)1 phase (230V)
Input voltage range156 – 300 V176 – 294 V
Max. current8 А
Bypass (direct connection)is absentis absent
Output
Output voltage1 phase (230V)1 phase (230V)
Peak output power900 VA900 VA
Rated output power540 W540 W
Efficiency97.4 %
Output waveformsimilar to a sinusoid (approximated)similar to a sinusoid (approximated)
Output frequency47 – 63 Hz50/60 Hz
Redundant sockets3
Non-redundant sockets2
Socket typetype F (Schuko)
Reserved C13/C14 connectors4
No reserve C13/C14 connectors4
Battery
1st battery voltage24 V
Total battery capacity7 Ah7 Ah
Number of batteries21
Full charge time480 min480 min
Cold start
Battery hot swap
Protection
Protection
short circuit protection
overload protection
noise filtering
data line protection
sound alarm
short circuit protection
overload protection
noise filtering
data line protection
sound alarm
Fuseautoauto
Surge protection613 J613 J
Control interfaces
 
USB
RS-232
USB
General
Screen
Operating temperature0 – 40 °C0 – 40 °C
Noise level45 dB45 dB
Dimensions (HxWxD)250x100x382 mm250x100x382 mm
Weight10.7 kg10.72 kg
Added to E-Catalogoctober 2018april 2012

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.

Input voltage range

In this case, the input voltage range is implied, in which the UPS is able to supply a stable voltage to the load only due to its own regulators, without switching to the battery. For redundant UPSs (see "Type") this range is quite small, approximately 190 to 260 V; for interactive and especially inverter ones, it is much wider. Some UPS models allow you to manually set the input voltage range.

Max. current

The maximum current drawn by the UPS. In fact, the current reaches its maximum value only when the UPS is operating from the mains with maximum load power and a completely discharged battery. However, when calculating the load on the power grid, this parameter should be taken into account.

Efficiency

Efficiency (coefficient of performance) in the case of a UPS is the ratio of its output power to the power consumed from the network. This is one of the main parameters that determine the overall efficiency of the device: the higher the efficiency, the less energy the UPS wastes (due to heating parts, electromagnetic radiation, etc.). In modern models, the efficiency value can reach 99%.

Output frequency

The frequency (frequency range) of the AC voltage output by the UPS. For computer technology, the frequency range of 47-53 Hz is considered normal, although the smaller the deviation from the 50 Hz standard, the better. On the other hand, in some UPS models, this frequency can be automatically synchronized with the frequency of the mains — so the power supplied to the load will not differ regardless of whether the load is powered by the mains or from the battery. In this case, a wider frequency range, on the contrary, is more desirable.

Redundant sockets

The number of outlets connected to the power reserve(battery) provided in the design of the UPS. In order for the UPS to fulfill its main role (providing a backup power in case of power outages), the corresponding electrical appliances must be connected to these outlets. The sockets have a standard shape and are compatible with the vast majority of popular 230 V plugs.

At a minimum, the UPS has 1 or 2 outlets and, in more advanced ones, there may be 3 or more.

Non-redundant sockets

The number of outlets without connection to the power reserve provided in the design of the UPS. For devices connected to such outlets, the UPS only performs the function of a surge protector — it smooths out small voltage irregularities; when the mains voltage fails, the power to these outlets is also turned off. The sockets have a standard shape and are compatible with the vast majority of popular 230 V plugs. The presence of sockets without a reserve allows you to connect equipment with different requirements for uninterrupted power supply to one UPS. For example, sockets with a reserve (see above) can include a system unit and a monitor, and a printer can be connected to a socket without a reserve. Thus, if the mains power fails, the computer will continue to work, allowing you to save data, and the printer will turn off, thus saving battery power and providing longer UPS runtime.

Socket type

A socket for a specific type of plug in the UPS design.

Type F (Schuko). A traditional European socket with two round holes in the center and grounding contacts in the form of two metal brackets (at the top and bottom of the socket). The term Schuko stuck to this type of socket due to the abbreviation from the German Schutzkontakt - protective contact.

Type E (French). The French style socket has two round holes and a protruding ground pin just above them in the center. The standard has become widespread in France, Poland and Belgium (along with the traditional type F sockets).

Type G (British). The plug for such sockets consists of two flat horizontal pins and one flat vertical pin for grounding. The standard is found mainly in the countries of the United Kingdom, Malta, Cyprus, Singapore and Hong Kong.

Type B (American). American-style sockets are designed for plugs with two flat prongs and a semicircular grounding contact. Type B is widely used in regions with voltage 110 - 127 V - USA, Japan, Saudi Arabia, etc.

Reserved C13/C14 connectors

Number of C13/C14 connectors with power reserve provided in the UPS design.

Electrical appliances connected to connectors with a reserve are insured against a power failure in the network - in this case they switch to the battery. The C13/C14 connector itself is also known as a “computer socket”; it supplies the same 230 V as a regular household network, but is not compatible with plugs for traditional sockets, because uses three flat contacts. However, there are adapters between these standards.

At a minimum, the UPS is provided with 1, 2 or 3 C13/C14 connectors for one workstation. In more advanced, so to speak office ones, the number of C13/C14 connectors may be greater - 4 ports, 6 connectors, 8 and even more
APC Back-UPS Pro 900VA BR900G-RS often compared
APC Back-UPS Pro 900VA BR900GI often compared