Deif CSQ-3 - Appendix 1: Setting and Parameters for Synchronising; Settings

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Appendix 1: Setting and parameters for synchronising
Settings
∆
U
Here the allowed relative voltage difference between GEN and busbar is adjusted. The
regulating range is ±1…10% in steps of 1%. The adjustment is made individually for
∆U
MIN
and ∆U
MAX
, so asymmetrical adjustment is possible. The setting is done
according to the following formula:
(U
GEN
– U
BUSBAR
) x 100
∆U
MIN
, ∆U
MAX
=
U
BUSBAR
If the preset value is exceeded, one of the two U
GEN
LEDs will emit red light, and
synchronising is not possible.
If the generator voltage is too low, the U
GEN
too low LED will be lit.
If the generator voltage is too high, the U
GEN
too high LED will be lit.
If both the U
GEN
LEDs are lit simultaneously, there is an overvoltage error on the input.
In this case, disconnect the unit and check the applied voltage level!
∆ϕ
Here the phase window is adjusted, in which synchronising can take place. The
adjustment starts from ±5° and the window can open symmetrically or asymmetrically
around this value.
The regulating range is -20°...-5° and 5°...20°, in 1° steps or
-40°...-10° and 10°...40°, in 2° steps.
t
R
Here the length of the pulse for the synchronising relay is adjusted.
The regulating range is 0...1 sec. in steps of 0.1 sec. or ∞.
This function makes it possible to adjust the synchronising pulse according to the
external breakers demands (closing time).
For special purposes it is also possible to adjust t
R
to ∞ (infinite). This setting will (after
t
d
has expired) provide a synchronising pulse as long as the following conditions are
met:
• Phase is inside the phase window
• Voltage > 70% of U
NOMINAL
t
d
Here the time is adjusted, in which the phase difference must be inside the preset
synchronising window to allow SYNC. The regulating range is 0...1 sec. in steps of 0.1
sec.
t
d
is only activated if t
R
is set to ∞.