The crane limiter is the overload protection device of the crane. The overload operation of the crane is one of the important reasons for the accident of the crane. The excessive stress generated by the overload operation can damage the transmission parts, break the steel wire rope, deform the structure and fail the braking, resulting in the downward deflection of the main beam of the crane, cracks and desoldering of the upper cover plate and web plate of the main beam, It will also cause major accidents such as boom and tower body breaking, and also cause motor overload and motor burning of electrical system. Therefore, overload is invented as protection.
The current overload limit switch whether it is overloaded through the working current. Once the overload is confirmed, a high-frequency alarm will occur and the rising power supply will be automatically cut off, so as to protect the safety of people and mechanical devices. It is an ideal supporting product of the crane
| Technical Data of Current Overload Limit Switch |
| Model |
LAMP-Q5 |
| Current Transformer(C.T) |
|
| Optional Range Motor |
Capacity |
≤20T |
| Power |
AC320V-480V |
| Load current adjustment range |
0.8-40A |
| Min allowable change in current |
0.1A(100mA) |
| Starting time adjustment range |
0.1-25S |
| Overload time adjustment range |
0.1-25S |
| Reset time adjustment range |
0.1-25S |
| Output Voltage |
1a,1b,AV250V 5A(Resistive Load) |
| Temperature Range |
-10 to 60ºC |
| Inner Stress |
AC1500/Min |
| Power dissipation |
1.5VA |
1. Display precision:≤10% F.S
2. Humidity:below 40%
3. Environmental conditions:No corrosive and insulating gas, no flammable and ex-plosive gas and other harsh environments.
Single and double beam crane, electrcial and chain hoist, winch and other lifting equipment
Q1: Are you Manufacturer or Trading Company?
A1:We are an integrated industrial and trade enterprises. We have our own R&D team, factory and marketing department,
Q2: Which standard of your crane and crane components apply to?
A2: Our Crane can design and manufacture base on FEM, CMAA, ISO EN, GB standard.
Q3: How do you ensure your product quality?
A3: All our processes strictly adhere to ISO-9001 procedures, which include Material Traceability, ISO WPQR and welder certificate, Measuring Device Calibration, NDT for the welding, and full assembling and load testing before delivery.
Q4: How can I make payment?
A4: We accept T/T bank transfer, L/C, Paypal.
Q5: How can I assembly the cranes in my factory?
A5: We suggest you to recruit a crane service team in local to install the crane base on our Installation Guideline and User manual. If cannot, we can send engineer to your factory to guide you do the installation with extra charge, and the transportation, accommodation, translator shall be covered by your side also.
Q6: What is the warranty period, and how can I claim warranty If my crane have any issue?
A6: Our warranty period is 12 months after cargo leave China port. If the crane have any issue, our after-sales team and engineer will help you solve the issue by email or Video conference. If the defect is caused by quality issue, we will ship the spare parts to you by air to help you fixed it as soon as possible.
Q7: Do you accept OEM business?
A7: Sure, we do many OEM productions for some famous crane brand and customers around the world.
Q8: What about shipping?
A8: We recommend small batch by the way of air or LCL, but large delivery by the way of container or bulk vessel.
Q9: what about delivery time?
A9: different capacity crane and components have different estimated delivery time, generally speaking, around 4 weeks to 8 weeks.
Q10: What is your company policy if we want to distribute NANTE product in our market?
A10: Firstly, thank you for your interest to promote NANTE brand, we have distributors in 50+ countries, pleaes no hesitate to contact us for the detail discussions, as we have different policies for the different target markets. Surely, you are welcomed to visit our factory and let's talk face to face.
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