Installation GREYHOUND Switch
Release
01
04/2016
59
7.1.2 Power supply units
Pollution degree 2
Protection classes Laser protection Class 1 in compliance with IEC 60825-1
Degree of protection IP30
a. Temperature of the ambient air at a distance of 2 inches (5 cm) from the device
b. If you are using SFP modules without the “EEC” extension, an operating temperature range
of +32 °F to +140 °F (0 °C to +60 °C) applies for your device.
c. Applies to GRS device variants with the extended temperature range:
If more than 4 SFP transceivers are used, the maximum operating temperature is reduced
by 2 K per additional SFP transceiver.
Dimensions
W × H × D
See “Power supply units” on page 63.
Weight GPS1-C 21.16 oz (600 g)
GPS1-K 25.04 oz (710 g)
GPS3-P 26.46 oz (750 g)
Power supply unit
Characteristic value C
Nominal voltage DC 24 V ... 48 V
Voltage range DC incl.
maximum tolerances:
min. 16.8 V ... max. 60 V
Power loss buffer > 10 ms at 20.4 V DC
Overload current protection
at input
Non-replaceable fuse
Peak inrush current < 7A (1ms)
Current integral I
2
T0.4A
2
s
Power supply unit
Characteristic value K
Nominal voltage AC 110 V ... 240 V, 50 Hz ... 60 Hz
Nominal voltage DC 60 V ... 250 V
Voltage range AC incl.
maximum tolerances
88 V ... 276 V, 47 Hz ... 63 Hz
Voltage range DC incl.
maximum tolerances
48 V ... 288 V
Power loss buffer > 17 ms at 110 V AC
> 20 ms at 230 V AC
Overload current protection
at input
Non-replaceable fuse
Peak inrush current < 3A (1ms)
Current integral I
2
T0.3A
2
s
Crest factor < 1.8
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