Thytronic NA016, Руководство пользователя

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TECHNICAL DATA
14 NA016 - Manual - 05 - 2022
3.4 MMI
Display 16x2 LCD backlight module
LEDs
Quantity 8
• ON/fail (green) 1
• Start (yellow) 1
• Trip (red) 1
• Trip I>, I>>, I>>> (red) 1
• Trip IE>, IE>> (red) 1
• 52a - Circuit Breaker position (red) 1
• 52b - Circuit Breaker position (red) 1
• TCS - Trip Circuit Supervision (red) 1
Keyboard 8 keys
[1]
3.5 COMMUNICATION INTERFACES
‡ Local port
Connection RJ10
Baud rate 19200 bps
Parity None
Protocol Modbus RTU®
‡ Remote ports
RS485
• Connection screw terminals
• Baud rate 1200...57600 bps
• Protocol
[2]
ModBus®RTU
IEC 60870-5-103
3.6 GENERAL SETTINGS
Relay nominal frequency f
n
50, 60 Hz
Phase CT primary nominal current I
np
[3]
1 A...1000 A
1...99 A (step 1 A)
100...1000 A (step 5 A)
Residual CT primary nominal current I
Enp
[4]
1 A...1000 A
1...99 A (step 1 A)
100...1000 A (step 5 A)
3.7 PROTECTIVE ELEMENTS
‡ Phase overcurrent - 50/51
I> Element
I > Curve type ( I>
Curve
) Inverse
[5]
IEC/BS A, B, C
50/51 First threshold inverse time ( I >
inv
) 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
)
Operating time ( t >
inv
) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Nota 1 The “ O ” and “ I ” keys are not actives
Note 2 The different versions must be select on order
Note 3 The nominal current settings doesn’t concern the 50/51 protection elements; they must agree with nominal primary current for traditional CT
inputs or dip-switch 50...1250 A for LPCT inputs for a right reading of the phase current primary values (Reading Direct).
Note 4 The nominal current settings doesn’t concern the 50N/51N protection elements; they must agree with nominal primary current of the CT inputs
for a right reading of the residual current primary values (Reading Direct).
Note 5 Standard Inverse Time (IEC 255-3/BS142 type A or SIT): t = 0.14 · t>
inv
/ [(I/I>
inv
)
0.02
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or VIT): t = 13.5 · t>
inv
/ [(I/I>
inv
) - 1]
Extremely Inverse Time (IEC 255-3/BS142 type C or EIT): t = 80 · t>
inv
/ [(I/I>
inv
)
2
- 1]
t : operate time
I>
inv
: pickup value
t>
inv
: operate time setting
Asymptotic reference value: 1.1 I >
inv
Minimum operate time: 0.1 s
Equation is valid for 1.1 ≤ I/I>
inv
≤ 20:
- with traditional CTs and setting I>inv ≥ 2.0 In, the measuring upper limit is 40 In
- with LPCT sensors and setting I>inv = 1.0 In and In = 625 A the measuring upper limit is 12500 A