3 Phase Ct Meter Wiring Diagrams

120 208v or 277 480v or meter rated 120 or 240v using line to ground voltage.

3 phase ct meter wiring diagrams. The company s nominal secondary service voltages are 120 volts single phase 120 240 volts 3 wire single phase 240 volts 3 phase 3 wire 120 240 3 phase 4 wire 120 208 3 phase 4 wire 277 480 volts 3 phase 4 wire. How to wire a three phase kwh energy meter. Service voltages higher than 480 volts are available only by negotiation with the company. 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.

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 wire network 3 wire 4 wire delta or 4 wire wye. 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. A 240 volt meter is used for 277 480v service.

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. 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. 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. 3 phase kwh meter wiring and it s connection diagram as you know that we use two types of electrical appliances regarding it s rated voltage in which some are for single phase and some are required 3 phase just like this we use two types of kwh meter in which one for single phase and 2nd kwh meter 3 phase.

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. Showing wiring from a current transformer in a cabinet to the test switch and to the meter. Polyphase circuits a polyphase 3 phase circuit may be. Ct current transformer wiring connections for commercial form 9s electric meter installation.