Accuracy and Stability Data for
RADIAN RD-2x Standards
Specifications
Function
Voltage
Current
Power/Energy77, 8
Phase Angle
Reading
30V to 630V4,5
1mA < 20 mA
Stability
Accuracy (ppm)3
TCAL1 + 5°C
2
20mA to 200A
1mA < 20 mA2
20mA to 200A
0° to 360°
Current
Power/Energy7
Phase Angle
1mA < 20 mA
20mA to 200A
1mA < 20 mA2
20mA to 200A
0° to 360°
Temperature
Coefficient6
(ppm/°C)
RD-20
RD-21
RD-22
RD-23
RD-20
𝑝𝑝𝑚 𝑀𝑜𝑛𝑡ℎ𝑠
RD-21
RD-22
RD-23
200
30
100
50
8
42
2
30
2.5
280
140
30
70
12
63
3
50
2.5
400
200
50
100
16
84
4
80
5
0.012°
0.003°
0.006°
0.003°
Cal Unc.
(ppm)
Temperature
Coefficient6
(ppm/°C)
Notes:
1
- TCAL = 23°C
Specifications
2 - 20mA/Reading
(ppm)
Functionx Accuracy specification
Reading
Accuracy (ppm)3
3 - Includes variables of Stability, Power Factor, and Traceability Uncertainty. For 1> 1 second Test
TCAL + 5°C
4 - 30Vac … 60Vac Accuracy, Voltage accuracy * (60V/test voltage)
5 - Maximum 525V at 50Hz
RD-20
RD-21
RD-23
6 - Maximum -20°C … +70°C for RD-20 and RD-21, Maximum -20°C …+40°C for RD-23
4,5
200
50
30V
to 630V
7 - Values Voltage
for Power Factor > 0.5. For
Power
Factor < 0.5, (1.0 PF
Accuracy)/2*PF100
2
Cal Unc.
(ppm)
Stability
RD-20
𝑝𝑝𝑚 𝑀𝑜𝑛𝑡ℎ𝑠
RD-21
RD-23
8
4
2
30
2.5
280
140
70
12
6
3
50
2.5
400
200
100
16
8
4
80
5
0.012°
0.006°
0.003°
Notes:
Notes:
TCAL ==23°C
11 -- TCAL
23°C
20mA/Reading x Accuracy
specification
(ppm)(ppm)
22 -- 20mA/Reading
x Accuracy
specification
Includes variables
of of
Stability,
Power
Factor,
and Traceability
Uncertainty.
For > 1 second
33 -- Includes
variables
Stability,
Power
Factor,
and Traceability
Uncertainty.
For > 1Test
second Test
30Vac …
Voltage
accuracy
* (60V/test
voltage)
44 -- 30Vac
... 60Vac
60VacAccuracy,
Accuracy,
Voltage
accuracy
* (60V/test
voltage)
Maximum 525V
50Hz
55 -- Maximum
525Vatat
50Hz
Maximum -20°C
forfor
RD-20
and and
RD-21,
Maximum
-20°C …+40°C
RD-23for RD-23 and RD-22
66 -- Maximum
-20°C… ...+70°C
+70°C
RD-20
RD-21,
maximum
-20°C ...for+40°C
Values for
> 0.5.
ForFor
Power
Factor
< 0.5,
Accuracy)/2*PF
77 -- Values
forPower
PowerFactor
Factor
≥ 0.5.
Power
Factor
< (1.0
0.5, PF
(1.0
PF Accuracy)/2*PF
8 - Per unit uncertainty captured in the 17025 calibration report
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