YOKOGAWA wt3000 - Input Section

12-2 IM 760301-01E
Item Specifications
Continuous maximum Voltage input terminals: 1000Vrms
common mode voltage Current input terminals*: 1000 Vrms (maximum allowable voltage that can be measured)
(50/60 Hz) 600 Vrms (rating voltage of EN61010-2-030)
External current sensor input connector: 600 Vrms
Influence from common When 1000 Vrms is applied with the voltage input terminals shorted and current input terminals open.
• 50/60Hz: ±0.01% of range or less.
• Up to 200 kHz (reference value)
Voltage: ±3/range × f% of range or 3%, whichever is less, or less
Direct current input and external current sensor input: ±(maximum range/range) × 0.001 × f%
of range or less
Except, 0.01% or greater. The unit of frequency f is kHz. The maximum range in an equation
is 30 A or 10 V.
Line filter Select OFF, 500 Hz, 5.5 kHz, or 50 kHz.
Frequency filter Select On or Off.
A/D converter Simultaneous conversion of voltage and current inputs. Resolution: 16 bits. Conversion rate
(sampling interval): Approx. 5 µ s. For the measurement functions of harmonic measurement, see
chapter 7 in the Expansion Function User’s Manual IM760301-51E .
Range switching Can be set for each element.
Auto range function Range Increase
• When U or I exceeds 110% of the rated range
• When the peak value of the input signal exceeds approximately 330% of the rated range
(approximately 660% when the crest factor is set to 6)
Range decrease
When U or I is less than or equal to 30% of the rated range and Upk or Ipk is less than or equal
to 300% of the lower range (approximately 600% when the crest factor is set to 6)
Rated voltage to ground Voltage input terminals: 1000V
Current input terminals*: 1000 V (maximum allowable voltage that can be measured)
600 V (rating voltage of EN61010-2-030)
External current sensor input connector: 600 V
* Do not touch the inside of the external current sensor input BNC connector.
12.2 Display
Item Specifications
Display 8.4” color TFT LCD monitor
Display resolution of the entire screen
*
640 (H) × 480 (V) dots
Display resolution of the waveform display 501 (H) × 432 (V) dots
Display update interval See section 12.5.
* The LCD screen may contain 0.02% defects with respect to the total number of pixels.
12.1 Input Section/12.2 Display