Technical Data; Technical Revision History - ABB 615 series Technical Manual

1MAC059074-MB A
4.3.1.10
4.3.1.11
615 series ANSI
Technical Manual
Name Type
IB-diff FLOAT32
IC-diff FLOAT32
IA-bias FLOAT32
IB-bias FLOAT32
IC-bias FLOAT32

Technical data

Table 430: 87L Technical data
Characteristics
1)
Operation accuracy
High stage, trip time 2)3)
Reset time
Reset ratio
Retardation time (Low stage)
Trip time accuracy in definite time mode
Trip time accuracy in inverse time mode
1) With the symmetrical communication channel (as when using dedicated fiber optic).
2) Without additional delay in the communication channel (as when using dedicated fiber optic).
3) Including the delay of the output contact. When differential current = 2 ×
galvanic pilot wire link + 5 ms.
Low operate value multiples in range of 1.5...20.
4)

Technical revision history

Table 431: 87L Technical revision history
Technical revision
B
C
D
Values (Range) Unit
0.00...80.00
0.00...80.00
0.00...80.00
0.00...80.00
0.00...80.00
Value
Depending on the frequency of the measured
current: f ±2 Hz
n
Low stage
High stage
Minimum
22 ms
Typically 40 ms
Typically 0.96
<40 ms
±1.0% of the set value or ±20 ms
±5.0% of the set value or ±20 ms
Change
Step value changed from 0.05 to 0.01 for the
multiplier setting.
Support for in-zone transformer added.
Differential and bias currents are shown as rated
currents in the Measurements view.
Internal Improvement.
Section 4
Protection functions
Description
Differential current phase B
Differential current phase C
Stabilization current phase A
Stabilization current phase B
Stabilization current phase C
±2.5% of the set value
±2.5% of the set value
Typical Maximum
25 ms 29 ms
4)
High trip value and f = 50 Hz with
n
Time
499