ABB REL300 Instruction Manual page 129

I.L. 40-385.7
5.2 SELECTION OF REL300 SETTINGS
The following settings are determined by the application. They do not require calculation.
5.2.1 The OSC setting
For selecting one of the 4 ways (TRIP/Z2TR/Z2Z3/∆I∆V) to initiate the oscillographic data tak-
en, where:
TRIP
Z2TR
Z2Z3
∆I∆V
The setting of ∆I, ∆V, for OSC is not recommended.
NOTE:
5.2.2 The FDAT setting
For selecting one of the 3 ways (TRIP/Z2TR/Z2Z3) to initiate the fault data taken, where:
TRIP
Z2TR
Z2Z3
5.2.3 The current transformer ratio setting (CTR)
Used for the load current monitoring, if it is selected to be displayed in primary amperes. It has
no effect on the protective relaying system. For this example, set CTR = 240.
5.2.4 The voltage transformer ratio setting (VTR)
Used for the system voltage monitoring, if it is selected to be displayed in primary volts. It has
no effect on the protective relaying system. For this example, set VTR = 600.
5.2.5 The frequency setting (FREQ)
FREQ should be selected to match the power system operating frequency. For example, select
FREQ = 60 if the power system operating frequency is 60 Hertz.
5.2.6 The current transformer type setting (CTYP)
CTYP provides the flexibility for 5 Amp or 1 Amp rated current transformer selection. For ex-
ample, select and set CTYP = 5 if a 5 Amp current transformer is used.
The setting of CTYP affects all the distance unit and overcurrent unit setting ranges. The rang-
es will be automatically changed as listed in Table 5-1(page 5-12).
5-8
— start data taken only if trip action
— start data taken if Zone 2 units pick up, or any trip action occurs.
— start data taken if Zone 2 or Zone 3 units pick up, or any trip action occurs.
start data taken if ∆I, ∆V, Zone 2 or Zone 3 units pick up, or any trip action occurs.
—
— start to store fault data only if trip action occurs.
— start to store fault data if Zone 2 units pick up or any trip action occurs.
— start to store fault data if Zone 2 or Zone 3 units pick up or any trip action occurs.
occurs.