Voltage, Current And Active Power Measurements - Teledyne Everywhereyoulook T3PM1100 User Manual

When the line filter is
turned ON
Temperature coefficient
Accuracy when the crest
factor is set to 6 or 6A
Accuracy of apparent
power S
Accuracy of reactive power
Q
Accuracy of power factor λ
Accuracy of phase
difference Φ
Accuracy when the crest
factor is set to 6 or 6A
Accuracy changes caused
by data update interval
* f is the frequency of input signal in kHz

Voltage, Current and Active Power Measurements

Item
Measurement method
Crest factor
Wiring system
Range select
Auto range
(power reading ) × [(power reading error%) + (power
range %) × (power range / indicated apparent power
value) + {tanΦ × (influence when λ=o)%}]
45 ~ 66 Hz
< 45 Hz
Same as the temperature coefficient for voltage and
current
Accuracy obtained by doubling the measurement
range error for the accuracy when the crest factor is
set to 3
voltage accuracy + current accuracy
accuracy of apparent power + (√1.0004 - λ2) - (√1 -
λ2) ×100 %
± [(λ-λ/1.0002)+丨 cosø-cos{ø+sin-1 (influence from
the power factor when λ = 0%/100)}丨] ±1 digit
when voltage and current are at the measurement
range rated input
± [丨 ø-cos-1(λ/1.0002)丨+ sin-1 (influence from the
power factor when λ = 0 % / 100)] ± 1 digit when
voltage and current are at the measurement range
rated input
Accuracy obtained by doubling the measurement
range error for the accuracy when the crest factor is
set to 3
When the data update interval is 100 ms, and Auto,
add 0.05% of reading to the 0.1 Hz to 1 kHz
accuracy.
Specifications
Digital sampling method
3 or 6 (6A)
Single-phase , two-wire(1 P2 W)
Select manual or auto ranging
Auto-range increase
The range is upped when any of the following
conditions is met.
Add 0.3 % of reading
Add 1 % of reading
APPENDIX
203