TECHNICAL DATA
14
NA011 - Manual - 05 - 2022
3.2 INPUT CIRCUITS
Auxiliary power supply
U
aux
Voltage
Nominal value (range)
[1]
24...230 V~/-
Operative range 19...265 V~/19...300 V-
Inrush current (max)
• 24 V- 3 A, 1 ms
• 48 V- 5 A, 1 ms
• 110 V- 10 A, 1 ms
• 230 V~ 40 A, 1 ms
Frequency (for alternate voltage supply) 45...66 Hz
Max distortion factor ( for alternating voltage supply) 15%
Max alternating component (for dc voltage supply):
• Full wave rectified sine wave (Sine wave) 100 % (80 %)
Power consumption:
• Maximum (energized relays, three LEDs, backlight ON) 4.5 W (U
AUX
= 24 V-)
• Maximum (energized relays, three LEDs, backlight ON) 9 VA (U
AUX
= 230 V~)
Phase current input circuits
Standard CTs:
Connections M4 terminals
Relay nominal phase current I
n
1 A or 5 A selectable by DIP-switch
Permanent overload 25 A
Thermal overload (1 s) 500 A
Dynamic overload (half cycle) 1250 A
Rated consumption (for any phase) ≤ 0.002 VA (I
n
=1 A), ≤ 0.04 VA (I
n
=1 A)
LPCT - Low Power Current Transformers:
Connections RJ45 plug
Relay nominal phase current I
n
100 A
Extended primary current 50 A...1250 A selectable by DIP-switch
Max primary current 12.5 kA
Nominal secondary voltage (with I
np
= 100 A) 22.5 mV
Residual current input circuit
[2]
Relay nominal residual current I
En
1 A or 5 A selectable by DIP-switch
Permanent overload 25 A
Thermal overload (1 s) 500 A
Dynamic overload (half cycle) 1250 A
Rated consumption ≤ 0.006 VA (I
En
=1 A), ≤ 0.12 VA (I
En
=5 A)
Binary input circuits
Quantity 3
Type optocoupler
Operative range 24...265 V~/-
Min activation voltage U
DIGmin
18 V
Max consumption, energized 3 mA
Funzioni selezionabili:
• IN1 None, 52b, Trip EXT
[3]
• IN2 None, 52a, Trip EXT, CB Open
• IN3 None, 79 Enable, 79 Remote
[4]
, Trip EXT, CB Close
3.3 OUTPUT CIRCUITS
Output relays
Quantity 4
Type of contacts changeover (SPDT, type C)
Nominal current 8 A
Nominal voltage/max switching voltage 250 V~/400 V~
Breaking capacity:
• Direct current (L/R = 40 ms) 50 W (K1, K2, K4 trip)
• Direct current (L/R = 40 ms) 30 W (K3 signalling)
• Alternating current (l = 0,4) 1250 VA
Make 1000 W/VA
Short duration current (0,5 s) 30 A
Minimum switching load 300 mW (5 V/ 5 mA)
Mechanical life (Electrical life) 10
6
operations (10
5
operations)
Minimum pulse width (K1t
TR
...K4t
TR
) 0.01...0.50 s (step 0.01 s)
Note 1 The different versions must be select on order
Note 2 The residual current input is available on NA011#xxx2 and NA011#xxx3 versions
Note 3 - With “Trip-EXT” setting the selected relay (K1 ... K4) is driven when the binary input is powered
Note 4 - With “79 Remote” setting the reclosing sequence starts, when the binary input is powered (trigger from external protective device)
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