Installation and Operator’s Manual
Page 13 of 20
(Aurora Wind Interface Rev 4.0)
2.2
Wind Speed Feed back
The wind speed feed back is an open collector source. The generated pulse train has
frequency identical to the generator frequency. Max pull up voltage = 24Vdc; zero
level = 1.4Vmax; max current = 1mA. The pulse train is generated from two of the
wind turbine input phases (1 and 2). A hardware filtering optimizes the frequency
reading in the range 5-200Hz.
3 WBI Installation and Commissioning
The Wind Interface Box must be wired in accordance to the National Electric
Code (NEC) ANSI/NFPA 70, where applicable.
All energy sources need to be de-energized and locked out before starting to
work on the wind energy system.
CAUTION: Risk of fire and shock, connect Output (DC) terminals prior to
the connection of Input (AC) terminals.
Disconnect devices shall be provided in the end use installation on the AC side.
Input source shall have a disconnect device complying with the National
Electrical Code ANSI/NFPA 70, where applicable.
Input source and output circuit conductors shall be provided with over current
protection complying with the National Electrical Code ANSI/NFPA 70,
where applicable.
US versions:
The WBI must be installed using watertight wiring methods. This requires the use of
UL listed watertight components and locknuts with the applicable wiring method:
refer to Table 2.1 for required system connections. The optional Wind speed and
Diversion load connections are sealed with hole covers, Cembre, type PG9 (3/8”)
(model 1052009N) and type PG16 (model 1052016N) or the equivalent UL listed
watertight hole covers. See figures 3 and 4 for further details.
