Single phase meters with closed I-P links require galvanic isolation for testing. This galvanic isolation is done by a Multi Secondary Voltage Transformer (MSVT). The MSVT has one secondary taping for each single phase meter under test.
The CLOU CL6202-xx can be configured for various secondary tappings. For requests, please indicate the no. of meter positions.
|No. of windings||max. 48|
|Primary voltage||220 V to 240 V|
|Primary frequency||50 Hz or 60 Hz|
|Secondary voltage||220 V to 240 V|
|Range of secondary burden||4 VA to 15 VA|
|Accuracy Error prim / sec||≤ ± 0,1 %|
|Phase Error prim / sec||≤ ± 2′|
|Accuracy Error sec / sec (within burden range)||≤ ± 0.01 %|
|Phase Error sec / sec (within burden range)||≤ ± 1′|
Each secondary tapping is calibrated individually.
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Editor's note: This article was originally published in November 2019 and has been updated for comprehensiveness.