Emax UL
32/132
L2275
Doc. N°
Mod.
RH0109002
Apparatus
Scale
Page N°
L
(t=k/I
2
)
!
0.4xIn
≤
I
1
≤
1xIn
0.4, 0.5, 0.6, 0.7,
3s
≤
t
1
≤
18s
(1) (2)
3 (A), 6 (B),
± 10%
± 10%, I
f
≤
3xIn
0.8, 0.9, 0.95,1
12 (C), 18 (D)
in accordance
± 20%, I
f
> 3xIn
with
ANSI37.17
S
"
± 10%
the best of the two data
(t=k)
1, 2, 3, 4, 6,
0.05 (A), 0.1 (B),
± 20% o ± 50ms
1xIn
≤
I
2
≤
10xIn
8, 10 + Off
0.05s
≤
t
2
≤
0.4s
(3)
0.25 (C), 0.4 (D)
S
"
± 10%
± 20%
(t=k/I
2
)
I
"
1.5xIn
≤
I
3
≤
12xIn
1.5, 2, 4, 6, 8,
Instantaneous
--
± 20%
≤
35ms I
f
≤
3xIn
(t=k)
10, 12 + Off
≤
30ms I
f
>
3xIn
G
"
0.2xIn
≤
I
4
≤
0.48xIn 0.2, 0.25, 0.3, 0.35, 0.1s
≤
t
4
≤
0.4s
(4)
0.1 (A), 0.2 (B),
± 10%
± 20%
(t=k/I
2
)
0.4, 0.45, 0.48 + Off
0.3 (C), 0.4 (D)
Iinst
!
Only settable by ABB
Instantaneous
--
± 5%
--
Protection
Tolerance
threshold
(5)
Disabling
Threshold
Time
Tolerance
(5)
Range
Values
Selectable
Time
Range
Values
Selectable
12.9
Operating instructions/Service operation
12.9.1 Modification of basic configuration
It is possible to select the setting value relative to protection of the neutral conductor (percentage expressed according to the phase current).
The selectable values are 50% and 100%. Modification must only be carried out by ABB SACE.
12.9.2 Modification of protection functions
This paragraph allows the user to set of the protection functions implemented in the PR111 unit. Here only the setting methods and which values
are selectable are given. For all the other information regarding the technical characteristics of these protection functions, please see par.12.4.
No parameterization is allowed if the PR111 unit is in an alarm situation.
In the diagrams on the front plate (see ref. T Fig. 36),
relative to the settings, the position of the dipswitch is indicated
by the white part.
In the diagram at the side, the dipswitch
is set in the top position
12.9.2.1
Example of setting
An example of setting the dip-switch of protection function S is given
below, with:
•
Trip threshold (I
2
)
⇒
2 x In
•
Curve (t
2
)
⇒
0,05s (A) of type t=k/I
2
Threshold
I
2
Curve
t
2
(1)
The minimum value of this trip is 750ms regardless of the type of curve set (self-
protection).
(2)
The trip time t
1
is defined for I
f
=6I
1
(3)
The trip time t
2 i
s defined for I
f
=8 In with t=k/I
2
or for I
f
> I
2
with t=k
(4)
The trip time t
4
is defined for If =4 In
(5)
These tolerances are valid with the following hypotheses:
- trip unit self-supplied during service (without start-up)
- two-phase or three-phase power supply
For all cases not considered in the above hypotheses, the following tolerance
values are valid:
Trip threshold
Trip time
L
± 10% (according to ANSI 37.17 Standard)
± 20%
S
± 10%
± 20%
I
± 20%
≤
60ms
G
± 15%
± 20%
12.9.3 Signals
12.9.3.1
Optical signals
Signal
Description
• Presence of one or more overloaded phases with current values of I>1.05xI1 (protection “L” timing)
Led Emergency (red)
(on the NE, it depends on the selection made. For example, at 50% the values are halved);
• Timing in progress for protection function “S”
