1
2
1
op
k
t
I
IBase
=
æ
ö -
ç
÷
è
ø
GUID-E050AB5E-B2A4-4838-9E0F-C8133A63DF54 V1 EN
(Equation 100)
Where:
t
op
is operate time in seconds
k1 is a multiplier (it shall have default value of 41.4 in order to get the operating points as prescribed by
)
I is measured current by the function
IBase is base current (stator winding rated current)
In addition to this equation based operating characteristic, the stator overload function
has some additional cut-off features. The actual overall operating characteristic of the
stator overload function is shown in Figure
Section 8
1MRK502052-UEN B
Current protection
458
Technical manual
Summary of Contents for Relion REG670
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