Chapter 6 Specifications; Input - YOKOGAWA WT1800 User Manual

Chapter 6 Specifications
6.1

Input

Item
Input terminal type
Input format
Measurement range
Input impedance
Instantaneous maximum
allowable input
(within 20 ms)
Instantaneous maximum
allowable input
(within 1 s)
Continuous maximum
allowable input
Continuous maximum
common-mode voltage
(50/60 Hz)
IM WT1801-03EN
Specifications
Voltage
Plug-in terminal (safety terminal)
Current
• Direct input: large binding post
• External current sensor input: isolated BNC connector
Voltage
Floating input through resistive voltage divider
Current
Floating input through shunt
Voltage
Crest factor 3: 1.5 V, 3 V, 6 V, 10 V, 15 V, 30 V, 60 V, 100 V, 150 V, 300 V, 600 V, 1000 V
Crest factor 6: 0.75 V, 1.5 V, 3 V, 5 V, 7.5 V, 15 V, 30 V, 50 V, 75 V, 150 V, 300 V, 500 V
Current
• Direct input
50 A input elements
Crest factor 3: 1 A, 2 A, 5 A, 10 A, 20 A, 50 A
Crest factor 6: 500 mA, 1 A, 2.5 A, 5 A, 10 A, 25 A
5 A input elements
Crest factor 3: 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 500 mA, 1 A, 2 A, 5 A
Crest factor 6: 5 mA, 10 mA, 25 mA, 50 mA, 100 mA, 250 mA, 500 mA, 1 A, 2.5 A
• External current sensor input
Crest factor 3: 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V, 5 V, 10 V
Crest factor 6: 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1 V, 2.5 V, 5 V
Voltage
Input resistance: Approx. 2 MΩ; input capacitance: Approx. 10 pF
Current
• Direct input
50 A input element: approx. 2 mΩ + approx. 0.07 μH
5 A input element: approx. 100 mΩ + approx. 0.07 μH
• External current sensor input: approx. 1 MΩ
Voltage
Peak value of 4 kV or rms value of 2 kV, whichever is less.
Current
• Direct input (50 A input element): peak value of 450 A or rms value of 300 A, whichever is less
• Direct input (5 A input element): peak value of 30 A or rms value of 15 A, whichever is less
• External current sensor input: peak value less than or equal to 10 times the range
Voltage
Peak value of 3 kV or rms value of 1.5 kV, whichever is less
Current
• Direct input (50 A input element): peak value of 150 A or rms value of 55 A, whichever is less
• Direct input (5 A input element): peak value of 10 A or rms value of 7 A, whichever is less
• External current sensor input: peak value less than or equal to 10 times the range
Voltage
Peak value of 2 kV or rms value of 1.1 kV, whichever is less
If the frequency of the input voltage exceeds 100 kHz, (1200 − f) Vrms or less
f is the frequency of the input voltage in units of kHz.
Current
• Direct input (50 A input element): peak value of 150 A or rms value of 55 A, whichever is less
• Direct input (5 A input element): peak value of 10 A or rms value of 7 A, whichever is less
• External current sensor input: peak value less than or equal to 5 times the range
Voltage input terminals: 1000 Vrms
Current input terminals
*
with /EX1 to /EX6 option : 1000 Vrms (maximum allowable voltage that can be measured)
600 Vrms (rating voltage of EN61010-2-030)
without /EX1 to /EX6 option: 1000 Vrms
External current sensor input connector: 600 Vrms
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3
4
5
6
App
Index
6-1