Công tơ mẫu RD-31 3 Pha cấp chính xác +/- 0.02

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Xuất xứ: EU
Model: RD-31
Cấp chính xác: +/- 0.02
Hãng Radian Research

General 
Operating Range:
Current: 0.001 to 120 Amp, (200 Amp optional)
Voltage: 30 to 630 Vac (60Hz), 30 to 525 Vac (50Hz)
Aux Power: 60 to 630 V (autoranging)
Frequency: 45 Hz to 65 Hz
PF Accuracy

Power Factor

RD-30

RD-31

RD-33

> 0.5

0.04 %

0.02 %

0.01 %

 0.5

0.04 %/2PF

0.02 %/2PF

0.01 %/2PF

Harmonic Analysis: < 64th (bandwidth 10000 Hz)
Dimensions: 5″(127 mm), 17.5″ (444.5 mm), 6.25″ (158.7 mm)
Weight: 16 lbs (7.2 kg), Shipping weight 28 lbs (12.6 kg)

Environment:.

Operating & Storage Temp: -20°C to +70°C

Humidity: 0 % to 95 % non condensing

Vibration: All non destructive

Safety:

Hi-Pot: 2.3 kVrms, 60 Hz for 60 seconds

Surge: IEEE 472 and ANSI 37.90

Fused: Potential and Auxiliary Input
Warm-up: 15 seconds

 

Interface
Display: Touch screen, color back lit LCD
Communications: Serial Port: RS -232

Sensor Port: Lemo type

Clamp Probe Port: 3 CT Inputs (optional Clamps from Radian)
Inputs 1,2 & 3: BNC Display gate: 150 Ohm pull up to 5 V, clamped at 5.7 V

BNC Gate rate: 200 nS pulse width minimum, maximum 20 Hz repetition rate.
Outputs 1, 2 & 3:
(default = 0.00001 Wh/pulse)
Programmable KH value
Open collector, clamped at 27 V
Max 2.1 MHz (200nS pulse width minimum)
Selectable Watt Hours, VAR Hours, VA Hours

Current Inputs: 6 mm (<120 Amp), 8 mm (<200 Amp option)

Aux & Potential Inputs: 4 mm

 

Specifications 

Function 

Reading

Accuracy (ppm)3
TCAL1 ± 5°C

Stability
Square Root

Cal Unc.
(ppm)

Temperature Coefficient6 (ppm/°C)

RD-30

RD-31

RD-33

RD-30

RD-31

RD-33

Voltage

30 V to 630 V5

200

100

50

8

4

2

30

2.5

Current 

1 mA … 10 mA2

280

140

70

12

6

3

50

2.5

10 mA … 200 A

Power/Energy 3,4

1 mA … 10 mA2

400

200

100

16

8

4

80

5

10 mA … 200 A

Power Factor

> 0.5

0.04 %

0.02 %

0.01 %

 0.5

0.04%/2PF

0.02%/2PF

0.01%/2PF

Phase angle

0° … 360°

0.012°

0.006°

0.003°

 

RD-BR1 CT Burden & Ratio Analysis Specifications
Input Power

RD Standard connection (Allows 60-600V at Site)

Measurement Inputs Primary CT Current: 0.1 – 3000 Amperes, 50 or 60 Hz (using probes)
Secondary CT Current: 0.01 – 20 Amperes, 50 or 60 Hz
CT Primary Probe Input Voltage: 3V RMS Max (using RR-CTA1)
Probe Scales: 10mV/A
Accuracy Dependent on RD standard & clamp-on probe selected
CT Burden Testing CT Burden Value: 0.1, 0.2, 0.5, 1.0,4.0 & 8.0 Ohms
Resistive Element Tolerance: +/- 1%
Insertion Burden: +/- 0.04 Ohms