Seg WIC1-W2 User Manual

Technical Manual WIC1 SEG Electronics GmbH
DOK-TD-WIC1E, Rev. M 19
5. Technical Data, Characteristics and Features
5.1 Protective functions
5.1.1 Minimal operating current and rated primary current
In order to operate reliably, the WIC1 – as all CT-powered protection relays – needs a minimal current flowing con-
stantly in one of the phases. This minimal current is the smallest rated CT current (IS) x 0.9 listed in table.
The real rated current of the operating component to be protected is adjusted by parameter IS. All further settings
at the protection relay refer to the adjusted IS. This is to be described in the following example;
Boundary condition:
Setting IS = 40 A, CT type W3, 32 to 112 A
Setting I>: 1.1 x IS = 1.1 x 40 A = 44 A
Setting I>>: 10 x IS = 10 x 40 A = 400 A
Setting IE>: 0.2 x IS = 0.2 x 40 A = 8 A
Depending on the CT type, an adjustment for relay version WIC1-1 is possible in the following scaling:
CT Type
Rated CT current
Step
WIC1WE2AS1
8 – 28 A
0.1 A
WIC1WE2AS1
16 – 56 A
0.2 A
WIC1W2AS1
16 – 56 A
0.2 A
WIC1W3AS1
32 – 112 A
0.4 A
WIC1W4AS1
64 – 224 A
0.8 A
WIC1W5AS1
128 – 448 A
1.6 A
WIC1W6AS1
256 – 896 A
3.2 A
only for setting via serial interface
For relay versions WIC1-2 and WIC1-3 the following rated CT currents are adjustable either by DIP switches 1-4
(switch block 1) (Please note, DIP 4 is without function for the WIC1-2F) or HEX switch 1:
DIP 1-1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
DIP 1-2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
DIP 1-3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
DIP 1-4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
HEX 1
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
WIC1-W1
8
9
10
11
12
13
14
15
16
17
18
20
22
24
26
28
WIC1-W2
16
18
20
22
24
26
28
30
32
34
36
40
44
48
52
56
WIC1-W3
32
36
40
44
48
52
56
60
64
68
72
80
88
96
104
112
WIC1-W4
64
72
80
88
96
104
112
120
128
136
144
160
176
192
208
224
WIC1-W5
128
144
160
176
192
208
224
240
256
272
288
320
352
384
416
448
WIC1-W6
256
288
320
352
384
416
448
480
512
544
576
640
704
768
832
896
* All values are primary values in Ampere
Table 5.1

Seg WIC1-W2 Specifications

General

Brand	Seg
Model	WIC1-W2
Category	Relays
Language	English