DynaGen TG410, User Manual

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Settings
61
© 2017 DynaGen Technologies Inc TOUGH Series Manual
The equation for the IDMT is given as:
Where,
TDS
is the time dial setting above.
I
s
is the Rated Current (A).
I
is the actual current measured by the controller (A).
(t
r
)
m
is the trip time in seconds.
For example with a Rated Current of 100A and a TDS of 0.1 the IDMT will trigger in:
0.15s if the actual generator current is 1000A.
1.35s if the actual generator current is 200A.
6.75s if the actual generator current is 120A.
4.6.3.3 Load Imbalance
Load imbalance provides protection against differences in phase currents.
AC Monitor > O.C. Protection:
Name Range Description
Imbalance Mode Disable
Breaker Trip
Shutdown Trip Disable : Disables the Load Imbalance feature.
Breaker Trip : If Load Imbalance is active the Breaker Trip
switched output is activated to switch off the main generator
breaker. This is a latching feature.
The operator must press the and keys to reset
the latch.
Shutdown Trip : shuts down the engine.
Imbalance Set > Imbalance 1 ~ 200% The percentage of rated current that any phase must exceed
the other phases by to trigger a load imbalance.
Imbalance Set > Debounce 1 ~ 600 seconds The length of time to allow an imbalance before triggering (trip,
shutdown).
The load imbalance formula is given as:
For three phase:
For single phase:
Where
,
I
A
,I
B
,
and
I
C
are the actual current measured by the controller.
Note: Phase Imbalance is the same as load imbalance.