Ct Shorting Block Wiring Diagram

Current transformer shorting blocks protect not only equipment but personnel. Shorting the secondary with primary current present allows other connections to be removed if needed. Captive hardware finger safe covers din rail mounted safer than traditional shorting blocks easier to install eig offers two options for ct shorting for meter installation.

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Four or six pole shorting blocks can be used in applications with up to three current transformers as shown in the diagram below which allows each current transformer lead to have an individual contact point.

Ct shorting block wiring diagram. Ct shorting blocks are wired such that the negative leads of the current transformers are connected to the same node and tied to ground. Ei 30ct04dr 6 pole block part. We stock 4 6 8 point shorting blocks. An open ct secondary with primary current applied produces a hazardous voltage which.

This is usually not a concern if there is no line voltage connected to the corresponding voltage input terminal. Unused ct inputs could possibly pickup electrical noise so it is a good practice to short out unused ct input terminals by connecting a wire jumper about 1 inch long between the white and black ct terminals. 4 pole block part. 4 pole and 6 pole ct shorting blocks features include.

Ei 30ct06dr these shorting blocks are designed to be a superior. Ct shorting block provides current transformers potenetial transformers and shorting blocks to industry and utilities companies. Ct shorting blocks a critical part of current transformer protection. Wiring between the cts and the power monitor should include a shorting terminal block in the ct secondary circuit.