ABB SACE Emax 2 Installation, Operation And Maintenance Instructions

ABB | SACE Emax 2
Ekip Dip protection release | 2 - Protections
43 | © 2014 ABB | 1SDH000999R0002 - L8569
Summary table of protections
ABB
ANSI
(5)
Threshold
(1)
Threshold tole-
rance
(3)
Time
(1)
Calculation for-
mula t
t
(2)
Example calcula-
tion t
t
(2)
Tolerance t
t
(3)
L 49
I1 =
0.4…1 In
activation for If in the
range (1.05...1.2)
x I1
t1 =
3…144 s
t
t
=
(9 t1) / (If / I1)
2
t
t
= 6.75 s with:
I1 = 0.4 In; t1 = 3 s;
If = 0.8 In
± 10 % with If ≤ 6 In
± 20 % with If > 6 In
S
(t = k)
50 TD
I2 =
0.6...10 In
± 7 % with I2 ≤ 6 In
± 10 % with I2 > 6 In
t2 =
0.1…0.8 s
t
t
= t2 -
The better of the two
values:
± 10 % or ± 40 ms
S
(t = k / l
2
)
51
I2 =
0.6...10 In
± 7 % with I2 ≤ 6 In
± 10 % with I2 > 6 In
t2 =
0.1…0.8 s
t
t
=
(100 t2) / (If)
2
t
t
= 5 s con:
I2 = 1 In; t2 = 0.8 s;
If = 4 In
± 15 % with If ≤ 6 In
± 20 % with If > 6 In
I 50
I3 =
1.5...15 In
± 10 % Not adjustable t
t
≤ 30 ms - -
G
(t = k)
50N TD
I4
(4)
=
0.1...1 In
± 7 %
t4 =
0.1…0.8 s
t
t
= t4 -
The better of the two
values:
± 10 % or ± 40 ms
G
(t = k / l
2
)
51N
I4
(4)
=
0.1...1 In
± 7 %
t4 =
0.1…0.8 s
t
t
=
2 / (If / I4)
2
t
t
= 0.32 s with:
I4 = 0.8 In; t4 = 0.2
s; If = 2 In
± 15 %
Iinst -
Defined by
ABB
- Instantaneous - - -
(1)
See the screen-print for the available combinations.
(2)
The calculation of t
t
is valid for values of If that have exceeded the activation threshold of the protection.
(3)
Tolerances valid with release energized in service conditions or with the auxiliary; tripping time ≥ 100 ms, temperature and currents within operating
limits. If the conditions are not guaranteed, the tolerances in the table shown below apply.
(4)
In the presence of an auxiliary power supply all the thresholds are active. If the auxiliary power supply is not present, the minimum threshold is auto-
matically limited to the higher value between 100 A and 0.3 In
(5)
ANSI / IEEE C37-2 encoding.
Key
• (t=k) - Fixed time curve.
• (t=k/I
2
) - Dynamic time curve.
• t
t
- Tripping time.
• If - Primary fault current.
Tolerances in particular cases
If the conditions defined in point
(3)
of the above table are not guaranteed, the following tolerances apply:
Protection Tolerance threshold
Tolerance t
t
L Activation for If in the range (1.05...1.2) x I1 ± 20 %
S ± 10 % ± 20 %
I ± 15 % ≤ 60 ms
G ± 15 % ± 20 %

ABB SACE Emax 2 Specifications

General

Type	Air circuit breaker
Rated Current	800 A to 6300 A
Breaking Capacity	Up to 150 kA at 415 V AC
Frequency	50/60 Hz
Number of Poles	3, 4
Installation	Fixed or withdrawable
Standards	IEC 60947-2
Trip Unit	Ekip Touch, Ekip Hi-Touch
Communication	Modbus, Profibus, Ethernet