Mikro MK 3000L, Руководство пользователя

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Set the summation of the current (in Amps or square Amps) threshold.
Set the exponent for the summation for
Σ
Amps.
1 (IA) or 2 (I
2
A
2
)
Inr Blocking
Heading of Inrush Blocking menu. Press Enter to enter submenu
content
Set to Yes to enable the crossing of the 2
nd
Harmonic
ratio threshold on any phase activates the Inrush
Blocking Logic function instantaneously.
Set the value for the 2nd harmonic threshold ratio.
Set the value for the Inrush tReset time. This provides a
reset delay of the Inrush Blocking once the 2nd harmonic level falls
below the set threshold
The following protection functions can be assigned for inrush blocking.
Inr Blocking I
>
?
Yes
Enable or disable inrush blocking for I>
Inr Blocking I
>>
? Yes
Enable or disable inrush blocking for I>>
Inr Blocking I
>>>
? Yes
Enable or disable inrush blocking for I>>>
Inr Blocking Io
>
? Yes
Enable or disable inrush blocking for Io>
Inr Blocking Io
>>
? Yes
Enable or disable inrush blocking for Io>>
Inr Blocking Io
>>>
? Yes
Enable or disable inrush blocking for Io>>>
Inr Blocking I2
>
? Yes
Enable or disable inrush blocking for I2>
Inr Blocking I2>
>
? Yes
Enable or disable inrush blocking for I2>>
Cold Load Pickup Menu
Cold Load Pickup allows selected settings to be altered to respond to temporary overload conditions
that may occur during cold starts. These conditions could be switching on large heating load after a
extended cooling period, air conditioning, or inductive loads that draw high starting current like
motor.
To enable cold load pickup, one of the input functions has to be set to Cold Load PU.
Heading of Cold Load Pickup menu. Press Enter to enter submenu
content.
ΣAmps(n)
100MA
n
1
9.4 Cold Load PU
9.3 Inr Blocking
Inr Blocking?
Yes
Inr H2 Ratio
20%
Inr tReset
100ms