Frequency Protections - ABB SACE Emax 2 Manual

5 - Frequency protections

List
The Frequency protections, available by default for Ekip Hi-Touch, Ekip G Touch, Ekip G-Hi Touch models and configurable in Ekip Touch as
additional SW package, are:
Name Type of protection
UF Minimum frequency
OF Maximum frequency
UF2 Minimum frequency
(1)
OF2 Maximum frequency
(1)
Further details about the protections are given in document 1SDH001330R1002.
(1)
protections UF2 and OF2 are not available by default with Ekip G Touch. However, they can be integrated by requesting the relative SW package
(2)
Block configuration available via Ekip Connect
Summary table
ABB ANSI Threshold
(5)
f12 = 0,9...1 fn
UF 81L
(6)
Step = 0,001 fn
f13 = 1...1,1 fn
OF 81H
(6)
Step = 0,001 fn
f17 = 0,9...1 fn
UF2 81L
(6)
Step = 0,001 fn
f18 = 1...1,1 fn
OF2 81H
(6)
Step = 0,001 fn
(3)
calculation of t is valid for values which have exceeded the trip threshold of the protection
t
(4) tolerance values valid with Trip unit supplied at full rate or by auxiliary power supply, trip time ≥ 100 ms, temperature and current values within
operating limits; the tolerance value is ± 20% if the conditions are not guaranteed
(5)
ANSI / IEEE C37-2 codification
(6)
the protection excludes itself if the maximum value of the line-to-line voltage is less than 32 V with hysteresis at 36 V
(7)
tolerance valid for frequencies within range: fn ± 2%; a ± 5% tolerance is available for off range frequencies
34 | © 2019 ABB | 1SDH001316R1002 - ECN000086501 - Rev. A
Tolerance
Time
(7)(8)
threshold
t12 = 0,06...300 s
± 1 %
(7)
Step = 0,01 s
t13 = 0,06...300 s
± 1 %
(7)
Step = 0,01 s
t17 = 0,06...300 s
± 1 %
(7)
Step = 0,01 s
t18 = 0,06...300 s
± 1 %
(7)
Step = 0,01 s
Threshold Time
Calculation
Tolerance t
formula t
(3)
t
The best of the two values: ± 10 % (min = 30 ms) or ±
t = t12
40 ms (for set time < 5 s) / ± 100 ms (for set time ≥ 5 s)
t
The best of the two values: ± 10% or ± 40 ms (for set
t = t13
time < 5 s) / ± 100 ms (for set time ≥ 5 s)
t
The best of the two values: ± 10 % (min = 30 ms) or ±
t = t17
40 ms (for set time < 5 s) / ± 100 ms (for set time ≥ 5 s)
t
The best of the two values: ± 10% or ± 40 ms (for set
t = t18
time < 5 s) / ± 100 ms (for set time ≥ 5 s)
t
Additional functions
(2)
Trip enable, Block
Trip enable, Block
Trip enable, Block
Trip enable, Block
(4)
t
Protections | 5 - Frequency protections
ABB | SACE Emax 2