ABB RER670 Applications Manual page 168
Relion 670 series, railway application
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Also See for RER670:
- Commissioning manual (216 pages) ,
- Installation manual (112 pages) ,
- Communication protocol manual (48 pages)
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Section 8
Current protection
162
The parameters for two-step directional phase overcurrent protection D2PTOC are
set via the local HMI or Protection and Control Manager PCM600.
Common base IED values for primary current (IBase), primary voltage (UBase)
and primary power (SBase) are set in the global base values for settings function
GBASVAL.
GlobalBaseSel: This is used to select GBASVAL function for reference of base
values.
The parameter settings for the base quantities, which represent the base (100%) for
pickup levels of all measuring stages, shall be entered as setting parameters for
every D2PTOC function.
For two-phase railway supply system, IBase shall be entered as:
•
Rated phase current of the protected object in primary amperes, when the
measured current quantity is selected other than phase1-phase2, which is
shown in Table 17.
•
Rated phase current of the protected object in primary amperes multiplied by
2.0 (i.e. 2.0*Iphase), when the measured current quantity is selected as
phase1- phase2, which is shown in Table 17.
For two-phase railway supply system, UBase shall be entered as:
•
Rated phase-to-earth voltage of the protected object in primary kV, when the
measured voltage quantity is selected other than phase1-phase2, which is
shown in Table 18.
•
Rated phase-to-phase voltage of the protected object in primary kV, when the
measured voltage quantity is selected as phase1-phase2, which is shown in
Table 18.
Operation: This is used for two-step directional phase overcurrent protection
Off/On.
CurrentInput: This is used to select the type of energizing quantity (i.e. phasor) for
current and will be used as operating quantity for operation of both overcurrent
steps.
Table 17:
Current selection for D2PTOC function
CurrentInput
Set value for the parameter
phase1
phase2
posSeq
Table continues on next page
1MRK 506 375-UEN A
Comment
D2PTOC function will measure the phase L1
current
D2PTOC function will measure the phase L2
current
D2PTOC function will measure internally
calculated positive sequence current
Railway application RER670 2.2 IEC
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