Page 34 - Sace Emax 2 Manual Touch Protection breakers

ABB | SACE Emax 2
3 - Voltage protections

List
The Voltage 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 Threshold Time Additional functions (2)
UV Minimum voltage Trip enable, Block
OV Maximum voltage Trip enable, Block
UV2 (1) Minimum voltage Trip enable, Block
OV2 (1) Maximum voltage Trip enable, Block
VU Voltage unbalance Trip enable, Block
Phase Sequence Phase sequence error

Further details about the protections are given in document 1SDH001330R1002.

(1) protections UV2 and OV2 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

Tolerance Calculation
ABB ANSI (5) Threshold Time Tolerance t (4)
threshold formula t t (3) t
The best of the two values: ± 10% or ± 40
U8 = 0,05…1 Un t8 = 0,05...120 s
UV 27 ± 2 % (7) t = t8 ms (for set time < 5 s) / ± 100 ms (for set
Step = 0,001 Un Step = 0,01 s t
time ≥ 5 s)
The best of the two values: ± 10% or ± 40
U9 = 1…1,5 Un t9 = 0,05…120 s
OV 59 ± 2 % (7) t = t9 ms (for set time < 5 s) / ± 100 ms (for set
Step = 0,001 Un Step = 0,01 s t
time ≥ 5 s)
The best of the two values: ± 10% or ± 40
U15 = 0,05…1 Un t15 = 0,05…120 s
UV2 27 ± 2 % (7) t = t15 ms (for set time < 5 s) / ± 100 ms (for set
Step = 0,001 Un Step = 0,01 s t
time ≥ 5 s)
The best of the two values: ± 10% or ± 40
U16 = 1…1,5 Un t16 = 0,05…120 s
OV2 59 ± 2 % (7) t = t16 ms (for set time < 5 s) / ± 100 ms (for set
Step = 0,001 Un Step = 0,01 s t
time ≥ 5 s)
The best of the two values: ± 10% or ± 40
U14 = 2…90 % t14 = 0,5…60 s
VU (6) 47 ± 5 % t = t14 ms (for set time < 5 s) / ± 100 ms (for set
Step = 1 % Step = 0,5 s t
time ≥ 5 s)
Phase 47 1-2-3 / 3-2-1
Sequence
(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) protection not active if the higher of the voltages measured is less than 0.3 Un
(7) the Trip unit considers a 3% hysteresis for quitting the alarm condition

32 | © 2019 ABB | 1SDH001316R1002 - ECN000086501 - Rev. A Protections | 3 - Voltage protections