Chapter 71 Product Specifications
IES-1248-51V User’s Guide
580
Power Input
90 ~ 264 VAC, 50 Hz/60 Hz +/- 5%, with waveform distortion less than 5%.
Power Consumption
187 W maximum
The closer the subscribers to the IES-1248-51V, the lower the power
consumption. The fewer subscribers to the IES-1248-51V, the lower the power
consumption. For example, power consumption could be reduced to about 122 W
in the following situations:
• 100% ADSL data usage and up to 50% of subscribers within the same building
(short loop) as the IES-1248-51V are making VoIP calls .
• 100% ADSL data usage and up to 10% of subscribers within 3 Km (8,000 feet)
of the IES-1248-51V are making VoIP calls.
Fuse Rating
Changing the IES-1248-51V’s fuses requires partial disassembly of
the device. Only a qualified technician should perform this
process.
The following table describes the location and specification of the IES-1248-51V’s
fuses.
ALARM Port Power
The maximum power rating for the ALARM port is as follows:
• Input: 20 V, 500 mA
• Output: 20 V, 500 mA
Operating Environment
• Temperature: -10°C - 55°C
Table 230 Fuse Specifications
FUSE LOCATION FUSE RATING
AC sub board (near the power inlet) 250 VAC T10A
ASP-150-24 AC power module (near the AC
sub board)
250 VAC T4A
LPP-100-48 AC power module (near the
battery power board)
250 VAC T4A
On the VoIP Board (near the VoIP board’s
power connection)
250 VAC T8.0A
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