Medium Voltage Switchgear Grounding

Eaton s medium voltage ground and test devices are used to apply temporary grounding to the phase conductors of switchgear during maintenance and testing of the equipment.

Medium voltage switchgear grounding.

The advantages of gas insulated switchgear are. Conductor in each duct containing medium voltage conductors sized per nec except that minimum size shall be no. With a draw out safety device that can be inserted into a circuit breaker cubicle in the same manner as the vr series the ground and test devices are available as a single. New approaches for maintenance grounding in medium voltage switchgear schneider electric white paper revision 0 page 5 a third practice used is main grounding.

When applied properly it eliminates dangerous differences in electric potential and can redirect harmful current during events such as unforeseen induced voltage. Although the majority of these switches are air insulated gas insulated sf6 combination switches are available which are designed for load and fault current switching. 6 1 medium voltage metal enclosed switches introduction outdoor medium voltage switch contents description introduction an eaton green solution introduction product selection guide product offering chart metal enclosed 1 notes 1 additional products not shown include medium voltage transfer high resistance ground and low profile switchgear. Smaller transportation size and consequently easier shipping.

In this method the ground is applied to the line side of the main switch or circuit breaker in switchgear figure 3a. Bond the equipment grounding conductors to the switchgear ground bus to all manhole grounding provisions and hardware to the cable shield grounding provisions of medium voltage cable splices and terminations and to. Maintenance grounding is a proven method for protecting electrical workers during medium voltage switchgear maintenance. Modern grounding switches allow personnel to perform maintenance grounding with switchgear completely enclosed.

Lower space requirements up to approx. The benefits of this method. Medium voltage switches for use on 1 52kv indoor systems are predominantly used for isolation and earthing. 70 savings with 30 kv compared to air insulated switchgear.

The following should be noted.