3 Phase Ct Meter Wiring Diagrams
Be aware that these are general diagrams using standard test switches which may not match some utility standards in their configuration and are for reference only.
3 phase ct meter wiring diagrams. A 240 volt meter is used for 277 480v service. Today we are going to show that how to wire and install a 3 phase kwh energy meter three phase or poly phase 3 phase 4 wire digital or analog energy meter from the supply to the main distribution board. Current transformer installations single ø 2 wire with ct pt single ø 3 wire single ø 3wire or network with 2 wire ct s 3ø 3 wire with ct s pt s. Polyphase circuits a polyphase 3 phase circuit may be.
Showing wiring from a current transformer in a cabinet to the test switch and to the meter. I can also do it without connection with one anther but the main reason behind this is that in real life we do our wiring like above diagram in our main power. 3 phase 4 wire energy meter installation of 3 phase kwh energy meter. 120 208v or 277 480v or meter rated 120 or 240v using line to ground voltage.
Ct current transformer wiring connections for commercial form 9s electric meter installation. 3 wire network 3 wire 4 wire delta or 4 wire wye. Service voltages higher than 480 volts are available only by negotiation with the company. 12 engineering data engineering data meter socket circuit diagrams 176 data subject to change without notice.
3 phase supply standard connection for 230 400v 4 wire ct meter installation and test block pdf 0 27 mb 3 phase supply with 1 controlled phase pdf 0 21 mb 3 phase supply with 2 24 hour phases and one controller phase for distributed generation pdf 0 11 mb. Note the voltage inputs to the meter must be externally fused via a slyde lock fuse and terminal 11 is the neutral tying down the three voltages 2 the ct cables should be kept as short as possible use 2 5mm cable to maintain accuracy 3 cts match the ratio of the meter being fitted eg 200 5 amp meter 200 amp cts. 5s wiring diagram 3 wire delta 3 ph 3 wire 2 pt 2 ct glems would like to thank and acknowledge the use of the following meter connection diagrams from dr. In the above diagram i shown three ammeters current transformers in the above ct wiring diagram i common a wire of all ct s my means that i connect ct one connection with one another.