Frequency Protections - ABB SACE Emax 2 Instructions Manual
Emax low voltage air circuit-breakers e1.2-e2.2-e4.2-e6.2
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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 the remaining
models 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.
protections UF2 and OF2 are not available by default with Ekip G Touch. However, they can be integrated by requesting the relative SW
(1)
package
Block configuration available via Ekip Connect
(2)
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
calculation of t
is valid for values which have exceeded the trip threshold of the protection
(3)
t
tolerance values valid with Trip unit supplied at full rate or by auxiliary power supply, trip time ≥ 100 ms, temperature and current values
(4)
within operating limits; the tolerance value is ± 20% if the conditions are not guaranteed
ANSI / IEEE C37-2 codification
(5)
the protection excludes itself if the maximum value of the line-to-line voltage is less than 32 V with hysteresis at 36 V
(6)
(7)
tolerance valid for frequencies within range: fn ± 2%; a ± 5% tolerance is available for off range frequencies
21 | © 2023 ABB | 1SDH001316R1002 - ECN000297030
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
formula t
Tolerance 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
t
s)
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
t
s)
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
ABB | SACE Emax 2
ABB | SACE Emax 2
Protections
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