Sourced and supplied across Saudi Arabia
This is panel instrumentation rather than test equipment, and it is specified by the hole it goes in and the transformer that feeds it. The cut-out comes first, because panel meters follow standard square sizes and a replacement that is 24 millimetres larger than the aperture means cutting a live board. Then the input: below about 500 volts an instrument is usually connected directly, and above that it works from a voltage transformer, so the VT ratio and its secondary rating have to be stated or the meter reads a fixed multiple of the truth. Two questions decide the rest. Whether one instrument should carry the whole electrical picture — volts, amps, power, power factor, energy and harmonics in a multifunction meter — which is usually cheaper than four separate ones and always cheaper than four holes. And whether the reading needs to leave the panel, which makes the communication protocol part of the specification.
The more of this you send, the closer the first quotation lands.
| Panel cut-out | Standard square size, or the aperture in an existing board |
|---|---|
| Measured voltage | System voltage, and whether it is phase to phase or to neutral |
| Connection | Direct connected, or via a voltage transformer |
| VT ratio | Primary and secondary, where a transformer is used |
| Meter type | Analogue moving iron, digital, or multifunction |
| Additional quantities | Current, power, power factor, energy, frequency, harmonics |
| CT ratio | Where the instrument also measures current |
| Auxiliary supply | Control voltage the instrument runs from |
| Communication | Modbus RTU, TCP, or another protocol the system reads |
| Outputs | Pulse output, analogue retransmission, or alarm relay |
| Accuracy class | What the reading is used for — indication, billing or analysis |
| Quantity | Units per type, and the boards they populate |
Select one and it travels with your enquiry. Not sure? Leave it and describe the application instead.
We source to specification. Send your requirement and we will come back with options, lead time and pricing.