China Nanfeng Electric
86-577-62797256 king@kingnan.com

Emergency power off switch inspection method on crane

1. Each power control point should be equipped with an emergency power off switch, including a flashlight door and a portable control device.

2. Check whether there is a total power contactor on the crane. All power sources of the mechanism must be connected from the outlet end of the main power contactor. Power-on test: operate the emergency power-off switch, the main power contactor operates, cut off the total power supply of all mechanisms. All agencies are running stopped.

3. Check the structure of the emergency switch, which should comply with the non-automatic reset and reset mode of the emergency power-off switch, and should not be connected to the main power supply at the same time during reset.

Hot News
DC contactor will encounter failure
DC contactor will encounter failure

Overcurrent fault Overcurrent faults can be divided into acceleration

Introduction and features of the power connector
Introduction and features of the power connector

The power connector includes an insulative housing and a plurality of

DC contactor selection method and working principle
DC contactor selection method and working principle

1. Select the type of DC contactor The type of DC contactor should be

What is the difference between an AC contactor and a DC contactor
What is the difference between an AC contactor and a DC contactor

1.Iron core of AC contactor would generate eddy current and hysteresis

Recommend Products

GET A QUOTE

+86 13738766933

king@kingnan.com

GET IN TOUCH NOW
×
We value your privacy
We use cookies to provide you with a better online experience, analyse and measure website usage, and assist in our marketing efforts.
Accept All