EN_FANOXTD_GUIDE_SIL_OCEFPrimaryDist_SILA_R002.doc 15 / 36
•
1 Remote port RS485: ModBus RTU, IEC 60870-5-103 or DNP3.0 Serial (by general
settings)
•
1 Remote port RJ45: IEC 61850, DNP3.0 TCP/IP, Modbus TCP/IP or IEC 60870-5-104
(depending on model)
Auxiliary power
24-230 Vac/dc (-20%/+10%)
Environmental
conditions
Operating temperature: -10 to 70ºC
Storage temperature: -20 to 80ºC
Relative humidity: 95%
Transformers (*)
Measurement 3 or 4 CT /5 or /1
Measurement 3 LPCT (current transformers with voltage output)
Mechanical
Characteristics
Metallic box
Panel mounted.
Height x Width: 177 x 107 (mm)
Depth: 122.1 mm
Weight: 1.5 Kg
IP-54 on pannel
(*) Depending on model
(1)
LPCT model
→
50N/G, 50/51N: calculated neutral;
Standard model
→
50N/G, 50/51N/G: measured neutral
5.1.
IEC60255-151 Curves
The SIL-A relay complies with the curves shown in standard IEC 60255-151:
•
Inverse Curve
•
Very Inverse Curve
•
Extremely Inverse Curve
•
Long time Inverse Curve
There is a general mathematical equation that defines the time in seconds as a function of the
current:
K
D
B
Q
V
D
A
t
P
+
+
−
=
adjusted
I
I
V
=
Parameters
A
P
Q
B
K
Long time Inverse
120
1
1
0
0
Ext. Inverse
80
2
1
0
0
Very Inverse
13,5
1
1
0
0
Inverse
0,14
0,02
1
0
0
The curve can move from its axis using the D time selection device, which the user can adjust.
I
adjusted
is the initial operating current, set by the user.