Alternating Relay for 3 RA330 engines

Alternating Relay RA330
Alternation Command for hydropressor plant with 3 motors

Operation
Whenever the control (ALT) (6-7) closes, the output relays (1-3), (1-4) and (1-5) arm alternately in a sequential manner. If you close the second control (SIM2) (6-8), the next output relay is connected, leaving 2 outputs connected simultaneously. If this command reopens, the output relay that has been closed the longest will open. Whenever the third control (SIM3) (6-9) closes, the 3 outputs will turn on simultaneously.

In order to avoid hydraulic shocks, the relay has a device that delays the cut-off or start-up of the second electric pump by approximately 2s, even if the simultaneity command has been carried out together with the alternation command.

Sensitivity of control circuits: 0 to 20 Kohm

Voltage in control circuits: 12 VDC

AC/DC supply voltages: 24V AC: 230V; 400V (depending on model)

Supply voltage tolerance: -15%...+10%

Consumption: < 3VA

Dimensions: 35mm x 79mm x 77mm

Output relay: Cutting power: 2500VA (10A/250V) - Maximum cutting voltage: 400VAC