Impulse Relay Electrical Installations

Vocabulary flashcards covering impulse relay fundamentals, bi-stable functionality, control and power circuit separation, conductor sizing, and internal components.

Impulse Relay (Teleruptor)

A remotely controlled switch used to turn lamps on and off from multiple locations using short voltage pulses sent via push buttons.

Bi-stable Relay

A relay that possesses two stable positions (ON or OFF), remains in its switched state without continuous current, and is unaffected by de-energization or loss of voltage.

Control Circuit (Stuurkring)

The section of an impulse relay circuit where voltage pulses are transmitted to terminals A1 and A2 via push buttons.

Power Circuit (Vermogenkring)

The section of an impulse relay circuit where the electrical consumers, such as lamps, are switched.

Impulse Relay Circuit Coupling

The structural principle stating that the control circuit and power circuit are not electrically connected, but are mechanically connected.

Parallel Push Button Connection

The wiring arrangement where multiple push buttons in an impulse relay control circuit are connected in parallel.

ZLVS Conductor Wire Sizes

Wiring cross-sections specified for impulse relay installations: 1.5 mm² for the power circuit (lamps), and 1.5 mm² or 0.6 mm² for the control circuit.

SVV Cable

A multi-core control cable (such as 16x0.8 mm² housed in a preflex conduit) used for multi-impulse installations.

Indicator Lamp Current Threshold

A 230 V control voltage configuration designed to supply current to indicator lamps up to 5 mA.

Impulse Relay Assembly

The internal mechanical system consisting of coil terminals A1 and A2, armature, manual operating button, spring, coil, pin, cam wheel, cam arm, moving contact, fixed contact, and switching contact terminals.

Advantages of Impulse Relays

System benefits including easy circuit expansion, operation on Safety Extra Low Voltage (ZLVS), and lower installation costs compared to intermediate/cross switching.