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Comparison Eleks Amper U 9-1/32 v2.0 7 kVA vs Eleks Amper-Duo U 16-1/32 v2.0 7 kVA

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Eleks Amper U 9-1/32 v2.0 7 kVA
Eleks Amper-Duo U 16-1/32 v2.0 7 kVA
Eleks Amper U 9-1/32 v2.0 7 kVAEleks Amper-Duo U 16-1/32 v2.0 7 kVA
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AVR typetRIACtRIAC
Input voltage230V (1 phase)230V (1 phase)
Power7 kVA7 kVA
Specs
Input voltage range135 – 285 V100 – 295 V
Output voltage accuracy (±)4.5 %2.5 %
Response time20 ms20 ms
Efficiency98 %98 %
Voltmeterdigitaldigital
Sockets
Terminal connection
Protection levels
Protection
overheating
short circuit
overload
over / under voltage
overheating
short circuit
overload
over / under voltage
General
Installation
wall
floor
wall
floor
Coolingactiveactive
IP protection rating2020
Dimensions460x275x178 mm475x265x165 mm
Weight21 kg25 kg
Added to E-Catalogjuly 2019november 2016

Input voltage range

The voltage range at the input of the stabilizer, at which it is able to operate in normal mode and supply a constant voltage of 230 or 400 V to the load (depending on the number of phases, see above). The wider this range — the more versatile the device, the more serious power surges it can extinguish without going beyond the standard operating parameters. However, note that this parameter is not the only, and not even far from the main indicator of the quality of work: a lot also depends on the accuracy of the output voltage and the response speed (see both points below).

Also note that some models may have several modes of operation (for example, with 230 V, 230 V or 240 V output). In this case, the characteristics indicate the "general" input voltage range, from the smallest minimum to the largest maximum; the actual ranges for each particular mode will vary.

In addition, there are stabilizers that can operate outside the nominal input voltage range: with a slight deviation beyond its limits, the device provides relatively safe output indicators (also with some deviations from the nominal 230 or 400 V), but if the drop or rise becomes critical, it works appropriate protection (see below).

Output voltage accuracy (±)

The largest deviation from the nominal output voltage (230 V or 400 V, depending on the number of phases), which the regulator allows when operating in the normal input voltage range (see above). The smaller this deviation, the more efficiently the device works, the more accurately it adapts to “changes in the situation” and the less voltage fluctuations the connected load is exposed to.

When choosing for this parameter, it is worth considering first of all how demanding the connected devices are for voltage stability. On the one hand, high stability is good for any device, on the other hand, it usually means a high price. Accordingly, it usually does not make sense to buy an advanced stabilizer for an unpretentious load like light bulbs and heaters, but for sensitive devices like audio systems or computers, it can be very useful.
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