ABB RELION 620 Series Technical Manual page 602

Section 6
Supervision functions
6.3.7
Table 430: CCM Non group settings
Parameter Values (Range)
Operation 1=enable
5=disable
Pickup value 0.05...0.20
Max alarm current 1.00...5.00
6.3.8
6.3.9
6.4
6.4.1
596
Settings
Unit Step
xIn 0.01
xIn 0.01
Monitored data
Table 431: CCM Monitored data
Name Type
I_DIFF FLOAT32
CCM Enum
Technical data
Table 432: CCM Technical data
Characteristic
1)
Trip time
1) Including the delay of the output contact
Advanced current circuit supervision for transformers
MCS 3I, I2
Identification
Function description
Advanced current circuit supervision for
transformers
Default Description
1=enable Operation Enable / Disable
0.05 Minimum trip current differential level
1.50 Block of the function at high phase current
Values (Range) Unit
0.00...40.00 xIn
1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Value
<30 ms
IEC 61850 IEC 60617
identification identification
CTSRCTF MCS 3I, I2
1MAC504801-IB E
Description
Differential current
Status
ANSI/IEEE C37.2
device number
MCS 3I, I2
620 series ANSI
Technical Manual