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6.2 Optic connection
Inside the PSW-2G+ is installed Optical Distribution Frame. Optical cable is
put into large cable glands that are on the lower tier of the unit. The optical
cable is attached to the metal base of the distribution frame using nylon ties
or metal clamps. For attaching the string are used metal columns with
screws. Optical fibers fit in a splice-cassette designed for 16 shrinkable
plastic sleeves. Welded pigtails are connected to SC adapters located on
the plate. The optical patch cords then connect adapters and SFP modules.
It is allowed to connect pigtails directly to SFP excluding unnecessary
connections.
IMPORTANT!
The kit does NOT include nylon ties, shrinkable plastic
sleeves, pigtails, adapters.
IMPORTANT!
SFP port operates only at 1000 Mbit/s. Fast Ethernet SFP
modules will not operate.
6.3 Power connection
6.3.1. Main power supply
The PSW-2G+ is connected to the AC source of 220V. The supply cable is
brought into the unit through the cable gland and connected to the terminal
block of the power supply unit. It is possible to make this connection
through a circuit breaker to remove high voltage when maintaining the
switch. Calculation of the cable cross-section is based on the maximum
consumption of the PSU that does not exceed 200W. Grounding of the
device is required. The ground resistance must be no more than 4 ohms.
IMPORTANT!
Do not allow circuit boards contacting high voltage live wires.
Failure in this case entails a loss of the warranty.
IMPORTANT!
Since the switch contains switch-mode power supplies, it is a reactive load.
During start-up, when charging input condensers, a starting current appears
and it exceeds the nominal value. In order to avoid false alarms of the
protection devices, it is recommended to choose models with the
characteristic C for a current of at least 4A.
6.3.2. Backup power supply
