CAUTION!
For a WIC1‑4, it is also necessary that the congured operating mode matches the
connected hardware!
(For example, it is not permissible to connect a ag indicator and set the operating mode
to “Syst. O.K. & Ext.Suppl.”. See also the related Self-Supervision warnings SW 3, SW 4.)
Moreover, the electrical energy that an output relay drains with operating mode “Syst.
O.K. & Ext.Suppl.” requires that the WIC1‑4 is supplied by an external auxiliary voltage.
9.1.8.1 Impulse Output for the Tripping Coil
The low-energy trip coil of the circuit breaker is connected to terminals TC+ and TC− of
the terminal block X4. The trip energy is provided by a capacitor store integrated in the
protection relay. See also ╚═▷ “4.1.1.1 Trip Pulse and WIC1 LEDs”.
Length of each trip
impulse:
(approx.) 50 ms
The pause between the individual pulses depends on the
impedance of the tripping coil and the current level. Pulsing
is continued until the protection function’s tripping state
drops o.
Trip energy: E ≥ 0.1 Ws
Voltage: 24 VDC nominal voltage
Examples for compatible low energy trip coils:
• Manufacturer Siemens, type: 3AX 1104-0B; (0.1 Ws; 10 Ω)•
• Manufacturer Siemens, type: 3AX 1104-2B; (0.1 Ws; 20 Ω)•
9.1.8.2 Impulse Output for a Flag Indicator
Depending on the order option, the WIC1 can feature an impulse output for a ag indicator.
A ag indicator can be connected to terminals FI+/− (WIC1‑4: Out+/−) of the terminal block
X4, e. g. for a power-safe signaling of a trip. See also ╚═▷ “3.7.3 Impulse Signal for the
Flag Indicator”.
Length of each trip
impulse:
(approx.) 50 ms
The pause between the individual pulses depends on the
impedance of the ag indicator and the current level.
Pulsing is continued until the protection function’s tripping
state drops o.
Energy: ≥ 0.01 Ws
Voltage: 24 VDC nominal voltage
208 WIC1 WIC1-1.0-EN-MAN
9 Technical Data
9.1.8.1 Impulse Output for the Tripping Coil
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