Yes. Zhejiang Liqiang As a national high-tech enterprise and a qualified supplier of power grids, our products are produced in strict accordance with international standards such as IEC 62271, and have corresponding type inspection reports and ISO certifications, fully supporting export and international bidding projects.

No problem. We use export-grade thickened wooden boxes to ensure that they are not rusted and moisture-free during shipping.

Yes. Our vacuum circuit breakers and load switches are equipped with manual energy storage handles and manual closing and opening buttons, allowing for emergency operation without power.

We provide online technical guidance. If the core components (such as coils, motors) are damaged, we will airlift the accessories as quickly as possible and guide the replacement.

For equipment stored (more than 6 months), before electrification: 1.Remove surface dust and dry insulation. 2.Manually operate 3-5 times to check whether the mechanical mechanism is flexible and whether the grease is dry. 3.Carry out the necessary power-on test of the secondary control loop.

Normally, our vacuum interrupters are extremely sealed. It is suggested that the power frequency withstand voltage test should be carried out every 1-3 years. If the withstand voltage does not pass, it means that the vacuum degree has dropped, and the arc-quenching chamber needs to be replaced in time.

1.Check energy storage status: Observe the panel instructions to confirm whether the motor has stored energy.

2.Check the closing coil: Measure whether there is a control voltage input at both ends of the closing coil.

3.Check the interlocking mechanism: confirm that the cabinet door is closed tightly, or whether the interlocking mechanism is in a locked state (protection against misoperation).

Depending on the product, standard products are delivered within 5-20 days, while special products are determined based on the completion of production time.

Standard payment terms: 30% advance payment by wire transfer, 70% final payment before delivery.

We do not repair faults caused by physical damage, improper operation, unauthorized modification or self-repair, lightning strike, or other natural and man-made disasters.