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CAUTION!

For a WIC1‑4, it is also necessary that the con󰊟gured 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

Seg WIC1 User Manual

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