This content is intended for general information. The application must be carried out by means of equipment manufacturer instructions, the risk assessment specific to the business and the energy control procedure prepared by authorized persons.
Why do we need a special choice?
Locking the main switch of a panel may not mean that all energy connected to the panel is interrupted. UPS, generator, joint bar, control traffic and backfeeding possibilities should also be considered.
Data for the product selection
The lock hole in the rotating arm OFF position, the opening behavior of the panel door, switch mechanism and manufacturer instructions are checked. If you have more than one employee, a multiplier or group LOTO box is planned.
| Source | Control |
|---|---|
| The network | Main entry and possible second feeding |
| Generator | Automatic transfer and control circuit |
| UPS | Entrance, Bypass and Output |
| control of tension | Separate or external 24V source |
Order of Application
- Compare single line schemes and field labels.
- Make a controlled position and take the main switch to the OFF position.
- Apply a personal or isolation lock to the manufacturer's key point.
- Isolate alternative sources and stored energy.
- Verify the lack of energy with the appropriate test device and mark the work limit.
Frequent mistakes
- Assume that the main switch covers all subpaneels
- Generator or UPS backfeeds
- Use the Lotto lock instead of the Panel Door Lock
- Working with a single lock
What should be sent to match the offer or product?
The brand-model of the equipment must be sent together, general and close plan photos in a safe state, millimeter measurements, energy type, number of people to work at the same time, and the usage environment. This information reduces the risk of choosing product code according to its appearance alone.
Share your photos and sizes; let us evaluate the product, procedure, training and simulator needs together.