What is a safe distance?
A safe distance refers to the minimum straight-line distance that must be maintained between personnel and live parts of equipment when it is energized and the barriers have been removed. It takes into account the normal range of movement of personnel during work.
Applicable scenarios: Primarily used for inspections, meter readings, or routine work that does not require direct contact with the equipment.
According to the national standard GB 26860-2011 "Electrical Safety Work Regulations - Electrical Parts of Power Plants and Substations", the safe distance requirements for equipment without power interruption are as follows:
| Voltage Level | Safe Distance |
| 10kV and below | 0.70 meters |
| 20, 35kV | 1.00 meters |
| 66, 110kV | 1.50 meters |
| 220kV | 3.00 meters |
| 330kV | 4.00 meters |
| 500kV | 5.00 meters |
If insulated rods or other tools are used for live-line work, the minimum safety distance requirements for live parts are even stricter. For example, when using an insulated operating rod on a 10kV line, the distance between the human body and the live part should not be less than 0.4 meters, and the effective length of the insulated operating rod should not be less than 0.7 meters.
Products Description
ZW7-40.5 Highland Outdoor Vacuum Circuit Breaker is designed for three-phase AC 50Hz systems with a rated voltage of 40.5 kV, specifically for outdoor high-voltage equipment at altitudes of up to 3000 meters. It can be used to switch load currents, overload currents, and short-circuit currents.
Our address
No. 1 East Gaoxin Avenue, Baoji, Shaanxi, China
Phone Number
+86 180 9176 5658
xdtz03@westpowerelectric.com
