Hitachi Relion 670 Series Applications Manual page 185

1MRK506375-UEN Rev. N
BlkLowVolt: Voltage level under which the internal blocking of the undervoltage stage is activated; it
is set in % of UBase. This setting must be lower than the setting StartVolt. The setting can be very
low, for example, lower than 10%.
VDepMode: Selection of the characteristic of the start level of the overcurrent stage as a function of
the measured voltage; two options are available: Slope and Step. See Technical Manual for details
about the characteristics.
VDepFact: Slope mode: it is the start level of the overcurrent stage given in % of StartCurr when the
voltage is lower than 25% of UBase; so it defines the first point of the characteristic (0.25*UBase,
VDepFact*StartCurr/100*IBase). Step mode: it is the start level of the overcurrent stage given in % of
StartCurr when the voltage is lower than UHighLimit/100*UBase.
UHighLimit: when the measured voltage is higher than UHighLimit/100*UBase, than the start level of
the overcurrent stage is StartCurr/100*IBase. In particular, in Slope mode it defines the second point
of the characteristic (UHighLimit/100*UBase, StartCurr/100*IBase).
8.10 Tank overcurrent protection TPPIOC
8.10.1 Function revision history
Document
revision
A
B
C
D
E
F
G
H
M
N
8.10.2 Identification
Function description
Tank overcurrent protection
8.10.3 Application
The transformer is placed on an insulated platform using the rails. The rails are cut at each end and
insulated with respect to ground by setting the holding-down bolts in the concrete foundation without
any contact to the reinforcement or by fixing the rails on wooden ties.
Railway application RER670
Application manual
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.5 Setting I> is changed to I>>> and the maximum value is extended from 1000 %I
%I .
B
2.2.6 -
2.2.6 -
IEC 61850
identification
TPPIOC
© 2017 - 2023 Hitachi Energy. All rights reserved
GUID-DED1A7FB-EFAF-4620-9AD4-8DD826B01140 v1
GUID-9679493F-8174-466C-9A9D-B98EA96C9CE7 v2
GUID-38798F39-E346-4852-8735-A072644DCD92 v1
IEC 60617 ANSI/IEEE C37.2
identification device number
64
IN>>>
IEC15000111 V1 EN-US
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Section 8
Current protection
to 2000
B
179