Description
Elevator WJD Phase Sequence Relay 13503550-A
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Product Name |
Elevator WJD Phase Sequence Relay |
| Model Number | 13503550-A |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Elevator WJD Phase Sequence Relay 13503550-A for Hitachi Elevators
Elevator phase sequence relays are core electrical protection components, responsible for monitoring power phase sequence and voltage stability, directly safeguarding elevator motor operation and overall system safety. TheElevator WJD Phase Sequence Relay 13503550-A is a professional direct-replacement part specially designed for Hitachi elevators, fully compatible with original Hitachi elevator power control systems and protection mechanisms. As a globally trusted supplier of premium elevator spare parts, Nanjing Zhuye Elevatorparts manufactures this relay with rigorous quality control, ensuring perfect fitment, reliable performance, and long service life. Widely applied in routine maintenance, emergency fault replacement, and elevator renovation worldwide, it is highly recognized by maintenance technicians and property management teams.
Produced in strict compliance with Hitachi’s original equipment standards, the WJD Phase Sequence Relay 13503550-A features precise installation dimensions, standard plug-and-play wiring interfaces, and stable signal detection protocols, enabling seamless integration with Hitachi elevator systems without modifications. Crafted from high-quality anti-corrosion, dust-proof, and high-temperature-resistant materials, this relay excels in harsh elevator electrical cabinet environments, maintaining consistent performance in voltage fluctuations, vibration, and humidity. Equipped with high-precision phase sequence and voltage detection modules, it triggers timely protection signals when phase sequence is reversed or voltage is abnormal, effectively preventing motor burnout and system malfunctions. Proper installation, regular inspection, and timely replacement are key to maximizing its service life.
Standardized Installation & Usage Guidelines
Safety is the top priority during the installation and replacement of the WJD Phase Sequence Relay 13503550-A. Before initiating any maintenance work, certified technicians must fully cut off the elevator’s main power supply, lock the power switch, and post a clear “Maintenance in Progress” warning sign to prevent accidental startup, electric shock, or equipment damage.
First, confirm model compatibility: ensure the WJD Phase Sequence Relay 13503550-A matches the original faulty relay and specific Hitachi elevator model, verifying alignment in installation size, wiring specifications, and electrical parameters to avoid errors. Use professional tools to gently remove the old relay from the electrical cabinet mounting slot, taking care not to damage wiring or surrounding electrical components. Disconnect the wiring connector by pressing the release buckle, and mark wiring positions clearly to prevent incorrect connection during reinstallation.
Thoroughly clean the mounting slot to remove dust, grease, and debris, then install the new WJD Phase Sequence Relay 13503550-A firmly into the slot, ensuring stable fixation without looseness. Reconnect wiring according to marked positions, ensuring secure connections and correct polarity to avoid signal failure or short circuits. Restore the elevator’s power, switch to normal operation mode, and conduct a comprehensive test: verify phase sequence detection and voltage monitoring functions to ensure the relay works stably. In daily use, regularly inspect the relay’s surface and wiring to keep it clean and intact.
Replacement Cycle & Critical Replacement Indicators
The service life of the WJD Phase Sequence Relay 13503550-A for Hitachi elevators depends on operating environment, voltage stability, and maintenance quality, with flexible replacement cycles tailored to different scenarios.
In normal residential or office buildings with stable power supply and mild environments, thestandard replacement cycle is 5-7 years. The high-quality materials and precision components ensure stable protection performance throughout this period, with no obvious faults.
For Hitachi elevators in areas with unstable power supply, high-traffic public spaces (malls, hospitals, transit hubs) or harsh environments (coastal areas, high-temperature regions), the relay operates under higher load, so shorten the replacement cycle to 3-4 years to prevent sudden failures.
Immediate replacement is required if any faults occur: failure to detect phase sequence reversal or abnormal voltage; no signal output or intermittent signal; loose or corroded wiring connectors; relay surface damage or overheating; or frequent false alarms. Faulty phase sequence relays pose serious safety hazards to elevator motors and systems, making timely replacement critical.
Why Choose Nanjing Zhuye Elevatorparts
The WJD Phase Sequence Relay 13503550-A from Nanjing Zhuye Elevatorparts strictly adheres to Hitachi’s original technical standards, featuring high-precision phase sequence and voltage detection modules and durable, anti-corrosion housing. Each unit undergoes rigorous factory testing, including signal accuracy, voltage stability, and Hitachi system compatibility, ensuring 100% fitment and stable operation.
With years of expertise in elevator parts R&D, manufacturing, and global distribution, we offer reliable product quality, sufficient inventory, fast worldwide shipping, and professional technical support. The plug-and-play design simplifies installation, reducing maintenance time and elevator downtime. Choosing our WJD Phase Sequence Relay 13503550-A ensures safe and stable operation of Hitachi elevators, protecting electrical components and passengers effectively.
