Woodward HighPROtec MCDLV4, Руководство пользователя

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Protective Elements
Application ANSI 87N
Proper Use
To be used if the transformer is connected within the protection zone and should be protected against ground faults
between the phase and the neutral current transformer. This protective module can be applied only on the
protective device which measures the ground current at the respective neutral site of the transformer.
Name of the Element that is to be used
IdG
Wiring of the current transformers
Phase current transformers to be connected to X3.IL1, X3.IL2, X3.IL3
Ground current transformer to be connected to X3.IG
Calulated Reference Current
I
b
=
S
N
√
3
⋅
V
LL
=
Rated Power
Transformer
√
3
⋅
Rated Voltage
(
W2
)
Winding side
(
Ph
−
Ph
)
Required Settings
Set the Mode within the Device Planning.
⇨ Within [Device Planning]
⇨ Set „Transformer.Mode = used“
Activate the Protective Element within the Device Planning.
⇨ Within [Device Planning]
⇨ Set „IdG.Mode = use“
Set the Field Parameters of the transformer.
⇨ Within [Field Para\Transformer]
Set the parameters of the Restricted Ground Fault Differential Protection.
⇨ Within [Protection Para\Set [x]\Diff-Prot]
648 MCDLV4 DOK-HB-MCDLV4-2E