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SIF5600 - Manual - 03 - 2008
3.4 ENVIRONMENTAL CONDITION
Ambient temperature -25...+55 °C
Storage temperature -40...+85 °C
Relative humidity 10...95 %
Atmospheric pressure 70...110 kPa
Note: LCD contrast impaired for temperature lower 0 °C
3.5 MMI
Display
[1]
16x2 character LCD
Led ON (green)
50-51 (red)
50N-51N (red)
CB OPEN (green)
CB CLOSED (red)
Keyboard 4 keys
[2]
Keylock 3 positions
3.6 COMMUNICATION INTERFACE
Local Port
Port 9 pin RS232
Baud rate 1200...9600 bps
Data Bit 5...8
Parity Odd, Even, None
Protocol MODBUS RTU®
Network
Port two wire RS485
Type Half Duplex
Baud rate 1200...9600 bps
Data Bit 5...8
Parity Odd, Even, None
Protocol MODBUS RTU®
3.7 GENERAL SETTINGS
Phase nominal current I
n
1 A, 5 A
Phase nominal primary current of the phase CTs I
np
1A...10 kA
(1...99 A step 1 A
100...990 A step 10 A
1...10 kA step 100 A)
Residual nominal current I
En
1 A, 5 A
Residual nominal primary current of the residual CT I
Enp
1 A...10 kA
(1...99 A step 1 A
100...990 A step 10 A
1...10 kA step 100 A)
3.8 PROTECTION AND CONTROL FUNCTIONS
Phase overcurrent (50/51)
First threshold 50/51 definite time (I>
indep
) 0.100...10.00 I
n
(0.100...0.999 I
n
step 0.001 I
n
)
(1.00...10.00 I
n
step 0.01 I
n
)
Definite time operating time (t>
indep
) 0.05...180 s
(0.05...9.99 s step 0.01 s)
(10.0...99.9 s step 0.1 s)
(100...180 s step 1 s)
First threshold 50/51 inverse time (I>
dep
) 0.100...2.50 I
n
0.100...0.999 I
n
(step 0.001 I
n
1.00...2.50 I
n
(step 0.01 I
n
)
Inverse time operating time (t>
dep
)
[3]
0.10...60.0 s
0.10...9.99 s (step 0.01 s)
10.0...60.0 s s (step 0.1 s)
Note 1 For some versions
Note 2 Three keys for the SIF5600 versions without display
Note 3 IEC255-3 type A moderately inverse-time characteristic: t = 0.14 · t>dep / [(I/I>dep)0.02 - 1] with 2.10 fw release and followings
IEC255-3 type B very inverse-time characteristic: t = 13.5 · t>
dep
/ [(I/I>
dep
) - 1] with 2.10 fw release and followings
IEC255-3 type C extremely inverse-time characteristic: t = 80 · t>
dep
/ [(I/I>
dep
)
2
- 1] with 2.10 fw release and followings
With previous 2.00 fw release (normalization at fourfold threshold), the “SIF5600-Manual-10-2006” reference document must be used
t: operate time
t>
dep
: operate time setting
I>
dep
: threshold setting
Asymptotic reference value: 1.1 I>
dep
Minimum operate time: 0.05 s, Range: 1.1 ≤ I/I>
dep
≤ 20, Upper limit: 50 I
n