The Omnimeter I v.3 can meter nearly any electrical system that is commonly used around the world. It can operate on 50 or 60 Hz, 120 to 480 volts, 1-phase or 3-phase, it is accurate to 0.5%, and can meter up to 5000 amp systems. There is not an electrical system in common use that this meter will not support - except 3 phase 3 wire (no neutral) over 415 volts specifically. Here it is on our website: EKM-Omnimeter I v.3
We have received accuracy certification from the California Department of Weights and Measures for revenue grade metering, also known as California Type Approval. This is an accuracy standard that many other states look to for their revenue grade requirements. Here is the certificate: EKM California Type Approval
The Omnimeters are powered by the system they are metering. kWh data will be retained in the meter, even if it loses power for up to 10 years.
Here is the OmniMeter Spec Sheet.
This meter uses external Current Transformers (CTs) and will not function properly without them. These are sold separately on our website. The CTs measure the electrical current in the wires being measured. Which CTs are right for you will be determined by your type of electrical system, the maximum Amperage of your system, and the diameter of the wires being read. Solid-core CTs are less expensive but are a bit more difficult to install, they require that you disconnect or cut the wires being read and slip the CT over the wire. Split-Core CTs are more expensive but they simply clamp around the wires being read, making them much easier to install.
- Use 1 CT for single phase 2-wire systems (one hot and one neutral, with or without ground).
- Use 2 CTs for a 120/240V three-wire system (two hots and a neutral, with or without ground).
- Use 2 CTs for 3-phase 3-wire systems. (without neutral, up to 415V)
- Use 3 CTs for 3-phase 4-wire systems. (with neutral, up to 480V)
We have CTs that can meter up to 5000 amps in stock. The CT ratio is selectable inside the meter. Here is our selection of Current Transformers.
You can wirelessly bridge the hardwired RS-485 network at any point using our 485Bee wireless mesh. This would be between multiple meters or between a meter and any of the communication converters mentioned above.
How to install an Omnimeter (v.4 in this case but v.3 Omnimeters are installed in a similar way):