Woodward LS-5 v2 Series - Configure Monitoring; System a

System B Voltage: Terminals
23/25/27/29
Notes
WARNING: Only connect the measured
voltage to either the 120 Vac or the
480 Vac inputs. Do not connect both
sets of inputs to the measured
system.
The control is equipped with dual
voltage measuring inputs. The voltage
range of these measurement inputs is
dependent upon input terminals are
used. This value refers to the
secondary voltages of the potential
transformers, which are directly
connected to the control.
1807 SyB. CT primary rated current 2 1 to 32000 A/x
[500 A/x]
The input of the current transformer
ratio is necessary for the indication
and control of the actual monitored
value.
The current transformers ratio should
be selected so that at least 60 % of
the secondary current rating can be
measured when the monitored system
is at 100 % of operating capacity (i.e.
at 100 % of system capacity a 5 A CT
should output 3 A).
If the current transformers are sized
so that the percentage of the output is
lower, the loss of resolution may
cause inaccuracies in the monitoring
and control functions and a󰈠ect the
functionality of the control.
4.3
Con󰆟gure Monitoring
4.3.1
System A
ID Parameter CL Setting range
[Default]
Description
1771 SyA. voltage monitoring 2 The unit can either monitor the wye
voltages (phase-neutral) or the delta
voltages (phase-phase). The
monitoring of the wye voltage is
above all necessary to avoid earth-
faults in a compensated or isolated
network resulting in the tripping of the
voltage protection.
[Phase - phase] The phase-phase voltage will be
monitored and all subsequent
parameters concerning voltage
monitoring "system A" are referred to
this value (VL-L).
94 LS-5 v2 Series 37650
4 Con󰈡guration
4.3 Con󰈡gure Monitoring
Released