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Frequently Asked Questions about Combining Accessories (751521/751523/751574) with WT Series Digital Power Meters and the PZ4000 Power Analyzer:
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The rated output of the current sensor units and current transducer is 400 mA
(current output). We recommend connecting the current input directly to the current
input terminal, in light of noise and precision considerations.
The primary converted current range values for current input on the power meters
are shown below. Note that the maximum allowable input is 600 A peak in all cases.
WT1600 5 A module: 15/30/75/150/300/750/1500/3000/7500 A
PZ4000 5 A module: 150/300/600/1500/3000/6000/15000 A(The minimum range, if unmodified
to 1/10 range, is 150 A.)
PZ4000 5 A module 1/10-current model:15/30/60/150/300/600/1500 A
WT2000 1/10-current model:150/300/750/1500/3000/4500 A
WT1000 1/10-current model:75/150/300/750/1500/3000 A
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| Add the power meter error to the current sensor unit error or current transducer error.
There are special power meter models adjusted in combination with a current sensor unit. It is also possible to have your existing power meter calibrated in combination with a sensor unit. Ask us for further details. (The commercial frequency measurement accuracy is basically the same as that of the power meter.) In both of these cases, the product is treated as a special-order product. |
Make sure the primary conductor and secondary conductor do not interfere with each other. The secondary conductor may be affected by the primary conductor because it uses a very small current. Make the secondary conductor as short as possible and maintain its distance from the primary conductor, without allowing them to be parallel to each other.
We recommend AWG24 or higher as the secondary conductor material. Twisted-pair may be better than shielded cable for measurement applications such as inverters.
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Accessories for Power Meters and Digital Multimeters |
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