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Table 72. Local acceleration logic (DSTPLAL)

Characteristic Value

Operation accuracy At the frequency f = f

±1.5% of the set value or ±0.002 × I

Operate time accuracy ±1.0% of the set value or ±20 ms

Suppression of harmonics DFT: -50 dB at f = n x f

, where n = 2, 3, 4, 5,

…

Table 73. Local acceleration logic (DSTPLAL) main settings

Parameter

Function Value (Range) Step

Load current value DSTPLAL 0.01...1.00 pu 0.01

Minimum current DSTPLAL 0.01...1.00 pu 0.01

Minimum current

time

DSTPLAL 0.000...60.000 s 0.001

Load release on time DSTPLAL 0.000...60.000 s 0.001

Load release off Tm DSTPLAL 0.000...60.000 s 0.001

Loss of load Op DSTPLAL Disabled

Enabled

Zone extension DSTPLAL Disabled

Enabled

Table 74. Communication logic for residual overcurrent (RESCPSCH)

Characteristic

Value

Operate time accuracy ±1.0% of the set value or ±20 ms

Table 75. Communication logic for residual overcurrent (RESCPSCH) main settings

Parameter

Function Value (Range) Step

Scheme type RESCPSCH Off

Intertrip

Permissive UR

Permissive OR

Blocking

Coordination time RESCPSCH 0.000...60.000 s 0.001

Carrier Min Dur RESCPSCH 0.000...60.000 s 0.001

Feeder Protection and Control 1MRS756380 A

REF630

Product version: 1.0 Issued: 15.09.2009

52 ABB

ABB REF630 User Manual

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