Ct Shorting Terminal Block Wiring Diagram

It reveals the parts of the circuit as simplified forms as well as the power as well as signal links in between the tools.

Ct shorting terminal block wiring diagram. Death severe personal injury or equipment damage can result if the leads are touched when the ct is open circuited. To find out more download the part b price list on the nhp ecatalogues app via the qr code below. Once the current transformers are properly shorted using the ct shorting block it is safe to make wiring modifications on the meter side of the shorting block. For the wattnode pulse wnb series the ct common terminals will be approximately 25 vdc above earth ground connected to the green terminal block.

For the wattnode wnc series bacnet modbus and lonworks meters the ct common. Terminal block wiring diagram terminal block wiring diagram free downloads terminal block wiring diagram unique 3 wire microphone wiring. Collection of terminal block wiring diagram. Variety of terminal block wiring diagram.

Be sure to connect the white wire to the phase terminal aligned with the white dot and the black wire to the terminal with the black dot. Connect the ct polarity to one side of the terminals on the shorting block. Once the intended wiring modifications have been completed you will need to remove the shorting screws from the positive ct lead terminals in order to return the meter to proper operation. We stock 46 8 point shorting blocks.

The polarity of each pair of terminals is indicated by a white and black dot on the label. A wiring diagram is a streamlined traditional photographic depiction of an electrical circuit. To learn more please visit the schneider electric faq. If you use a six terminal block just jumper the three.

If you use a 4 terminal block in will connect to the three negative non polarity wires and ground. Click on the image to enlarge and then save it to your computer by right clicking on the image. If you do then wire it just like the diagram shows with the shorting block between the cts and the meter. Auckland hamilton napier new plymouth wellington christchurch.

As much as 4000v on the secondary has been measured on large core cts with an open circuited secondary. This occurs to bias the ct signals to the midpoint between circuit ground 00 vdc and 50 vdc. Demonstration of shorting a ct shorting block for safe wiring modifications. Catalog 3090tb4 for 4 pole and 3090tb6 for 6 pole shorting blocks used with cts.

Ct shorting block provides current transformers potenetial transformers and shorting blocks to industry and utilities companies. The terminals are labeled oa ct ob ct and oc ct. Fuse kits to suit these ct blocks are also available nhp has a full range of cts and energy meters to complement your ct test terminal block. Ct shorting blocks a critical part of current transformer protection.

Each pair of ct wires connects to the appropriate terminal on the black six position screw terminal block. 2voltage circuit wiring 4 mm two types of ct test terminal blocks are available for order.