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High AC current: current transformer ratio error (4)
High AC current: current transformer phase displacement (3)
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Your query 'United Kingdom' produced 9 results New search

 
United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
High AC current: current transformer ratio error. Compensated current transformer, 0 to 0.001
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 10E-06
Current comparator bridge
Frequency: 50 Hz to 400 Hz
Primary current: 0.25 A to 100 A
Secondary current: 1 A and 5 A
Approved on 06 August 2013
Internal NMI service identifier: 276,2
Uncertainty table
 
High AC current: current transformer ratio error. Uncompensated current transformer, 0 to 0.01
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 30E-06
Current comparator bridge
Frequency: 50 Hz to 400 Hz
Primary current: 0.25 A to 100 A
Secondary current: 1 A and 5 A
Approved on 06 August 2013
Internal NMI service identifier: 278
Uncertainty table
 
High AC current: current transformer ratio error. Current transformer bridge, 0 to 0.2
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 3E-06
Resistance bridge
Frequency: 50 Hz
Maximum current: 5 A
Approved on 06 August 2013
Internal NMI service identifier: 280
 
High AC current: current transformer phase displacement. Compensated current transformer, 0 µrad to 1000 µrad
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µrad: 10
Current comparator bridge
Frequency: 50 Hz to 400 Hz
Primary current: 0.25 A to 100 A
Secondary current: 1 A and 5 A
Approved on 06 August 2013
Internal NMI service identifier: 281
Uncertainty table
 
High AC current: current transformer phase displacement. Uncompensated current transformer, 0 µrad to 10000 µrad
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µrad: 30
Current comparator bridge
Frequency: 50 Hz to 400 Hz
Primary current: 0.25 A to 100 A
Secondary current: 1 A and 5 A
Approved on 06 August 2013
Internal NMI service identifier: 283
Uncertainty table
 
High AC current: current transformer phase displacement. Current transformer bridge, 0 µrad to 10000 µrad
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µrad: 3
Resistance bridge
Frequency: 50 Hz
Maximum current: 5 A
Approved on 06 August 2013
Internal NMI service identifier: 285
 
High AC current: current transformer ratio error. Current transformer, 0 to 0.01
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 10E-06 to 100E-06
Current comparator bridge
Frequency range: 50 Hz to 60 Hz
Primary current range: above 100 A to 10 kA
Secondary current: 1 A or 5 A
Approved on 06 August 2013
Internal NMI service identifier: 297
Uncertainty table
 
High AC current: ratio: phase displacement. Current transformer, 0 µrad to 10000 µrad
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µrad: 10 to 70
Current comparator bridge
Frequency range: 50 Hz to 60 Hz
Primary current range: above 100 A to 10 kA
Secondary current: 1 A or 5 A
Approved on 06 August 2013
Internal NMI service identifier: 303
Uncertainty table
 
High AC current: RMS value. Current transducer, 0.1 kA to 10 kA
Relative expanded uncertainty (k = 2, level of confidence 95 %) in mA/A: 0.5
Comparison using calibrated current transformer, resistor and 2 DVMs
Frequency: 50 Hz
Approved on 07 February 2019
Internal NMI service identifier: 296,2