Calibrated current transformer 5000/5 A
Calibrated current transformer for billing metering · ratio 5000:5
One CELSA calibrated current transformer with a ratio of 5000/5 A: Calibrated clip-on current transformers (ALO-E). Accuracy class 0.2, 0.2 S, 0.5 or 0.5 S, rated burden 2.5–15 VA. From €466.03 incl. VAT, with datasheet, direct from the manufacturer.
Frequently asked questions
When do I need a calibrated current transformer?
Whenever energy is billed to third parties based on the measurement (e.g. sub-metering for tenants), legal metrology requires a calibrated transformer together with a MID meter. ALO-E and WALO-E are conformity-assessed; the type is approved by PTB. Calibration and MID →
What does 5000/5 A mean?
With 5000 A in the primary conductor, the transformer delivers 5 A to the meter or measuring device – a ratio of 1000:1. Meters and instruments are set to this CT ratio.
Which accuracy class?
For calibrated current transformers 5000/5 A, the classes 0.2, 0.2 S, 0.5 and 0.5 S are available here. Billing-relevant metering requires class 0.5 or better; for display and monitoring class 1 is usually sufficient. Accuracy class comparison →