Dewetron DEWE3-PA8, Техническое справочное руководство

Страница: 28 / 44

28
MAIN SYSTEM
138
TRION3-1810M-POWER-4
Input impedance DC: ±0.03 % of reading ±0.03 % of range
2)
Isolation (earth) resistance 0.5 Hz to 1 kHz: ±0.04 % of reading
Connector 1 kHz to 5 kHz: ±0.2 % of reading
5 kHz to 10 kHz: ±0.5 % of reading
10 kHz to 50 kHz: ±(0.5 % + 0.05 % * f) of reading
Infl uence of power factor Add 0.01 % × f/50 × √(1/PF²-1)
1)
voltage and current channel have a minimum input of 1 % of range, otherwise individual uncertainty have to be calculated
2)
add 0.03 % of range with no zero level
Additional specifi cations
Typical channel to channel phase mismatch
(Voltage-Voltage, Current-Current, Voltage-Current)
<250 ns (0.1° @ 1 kHz, 0.005° @ 50 Hz)
Typical board-to-board phase mismatch
same board type <250 ns (0.1° @ 1 kHz, 0.005° @ 50 Hz)
diff erent board type ±1 Sample or 0.2° @ 1 kHz (whichever is higher)
Low pass fi lter (-3 dB, digital and analog combined) 100 Hz to 1 MHz freely programmable or OFF
Filter order & characteristics 2
nd
, 4
th
, 6
th
, 8
th
Bessel or Butterworth
Filter delay compensation up to 15 μ s the group delay of the selected fi lter will be automatically
compensated. This works for:
2
nd
order fi lter 15 kHz to 1 MHz
4
th
order fi lter 30 kHz to 1 MHz
6
th
order fi lter 60 kHz to 1 MHz
Typical Signal-to-noise ratio, Spurious free SNR, Eff ective number of Bits
1)
Voltage input 2000 V 20 A module 2 A module 1 A module 0.2 A module Clamp input module 10 V
SNR SFDR
2)
ENOB
3)
SNR SFDR
2)
ENOB
3)
SNR SFDR
2)
ENOB
3)
SNR SFDR
2)
ENOB
3)
SNR SFDR
2)
ENOB
3)
SNR SFDR
2)
ENOB
3)
Sample rate [dB] [dB] [Bit] [dB] [dB] [Bit] [dB] [dB] [Bit] [dB] [dB] [Bit] [dB] [dB] [Bit] [dB] [dB] [Bit]
0.1 kS/s 129 142 21.1 105 137 17.2 110 128 18.1 134 149 22.0 106 124 17.3 129 146 21.1
1 kS/s 126 139 20.6 100 130 16.3 94 118 15.4 128 149 21.0 90 115 14.7 119 131 19.5
10 kS/s 121 136 19.8 99 127 16.1 93 117 15.1 119 144 19.5 89 112 14.4 109 124 17.8
100 kS/s 113 135 18.5 94 123 15.4 93 116 15.1 109 137 17.8 88 112 14.3 99 119 16.2
1000 kS/s 103 128 16.9 88 112 14.3 92 116 15.0 99 134 16.2 86 109 13.9 94 115 15.3
2000 kS/s 85 106 13.8 87 110 14.2 92 116 15.0 98 130 16.0 86 109 13.9 92 114 15.0
1)
LP Filter in auto mode
2)
SFDR excluding harmonics
3)
ENOB calculated from SNR
continued from previous page ...