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Relays in excavators are core control components in the electrical system, primarily used to control high-current circuits with small currents, achieving safe and efficient electrical management. Their core functions include circuit isolation, signal amplification, load protection, and automated control.
Circuit Control and Isolation: Relays use electromagnetic induction to isolate low-voltage control signals from the high-voltage main circuit, avoiding the risks of directly operating high voltage. For example, when the excavator starts, the relay can cut off the power to non-critical electrical components, ensuring smooth motor startup.
Protection Functions: Relays monitor parameters such as current and voltage, automatically cutting off the circuit in case of abnormalities to prevent overload or short circuit damage to the equipment. For example, hydraulic relays (1YJ, 2YJ) can be set with pressure thresholds; in case of overpressure, they cut off the power to protect the hydraulic system.
Automation and remote control, in conjunction with sensors, enable automatic control of mechanical movements (such as a neutral relay controlling the position of the gear shift lever), or remote signal switching circuits (such as a DC contactor controlling the rotation and travel mechanisms).
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brand |
SHANTUI |
|
Warranty period |
No after-sales service |
|
Mechanical test report |
Unavailable |
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quality |
High quality |
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country of origin |
Shandong, China |
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Video factory inspection |
Unavailable |
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Warranty period |
No after-sales service |
|
size |
300*250 * 250mm |
|
Applied to |
Bulldozer D275A-5R, Excavator PC600, PC650-6 |
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Part Number |
08088-40000 08088-30000 |
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Part Name |
relay |
