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| Product Name | Price | Delivery | Qty |
|---|---|---|---|
| Alternation Relay RA221 w/ timing, 230V Cód.17225070 |
€53.88
|
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| Alternation Relay RA221 w/ timing, 400V Cód.17225080 |
€53.88
|
Product Description
Alternating Relay RA221
Alternation Command for hydropressor plant with 2 motors - with timing
Operation
Whenever the alternation command (6-8) (ALT) closes, the output relays (1-3) and (1-4) arm alternately. If the alternation control (6-8) remains closed after the previously set time 'T' or if the simultaneity control (6-7) closes (YES). the two output relays (1-3) and (1-4) are connected simultaneously, the relays only disarming after opening the two control circuits.
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.
The RA221 relay is a model that will soon be withdrawn from production and may be replaced by the new RA25A multifunction alternation relay model.
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