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  RD-30 Dytronic Three-Phase Reference Standard
 
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RD-33



Features



Measurement

The RD-21 registers both forward and reverse energy flow and provides voltage, current, power and energy (Active, Reactive, Apparent) information. The Harmonic Analysis option makes the analysis of customer load through the 50th harmonic order while the built-in comparator option provides for automatic calculation of test results for meters and standards being tested.



Meter and Standard Testing

The compact design of the RD-21 makes it an ideal reference standard for testing applications where optimal accuracy is required.



Analog Sense

The RD-21’s Optional analog sense feature enables testing transducers and energy meters that provide an analog output from zero to 2 mA.



Intuitive User Interface

The RD-21’s LCD and five button keypad provides a direct interface to the end user while the RS-232 port, utilized with the applicable software, allows for remote PC control and configuration of the RD-21.



Overview



Product Highlights

The Radian RD-21 Single-phase Electricity Reference Standard is one of the most versatile reference instruments ever. The RD-21 has a guaranteed accuracy of 0.02%. This guaranteed accuracy specification includes the variables of stability, power factor, traceability uncertainty and test system errors.



The RD-21 utilizes Radian’s new Dytronic measurement technology consisting of a Radian designed Integrating Analog to Digital Signal Converter. Unlike off-the-shelf A/D Converters used in other instruments, Radian’s A/D Converter is specifically designed and optimized for power and energy measurement. This unique design makes the RD-21 absolutely unsurpassed in its ability to accurately measure “real world” waveforms. The RD-21’s A/D Converter is combined with Radian’s renowned electronically compensated voltage and current input transformers and a hermetically sealed reference set to provide the highest degree of accuracy, stability and versatility offered in a portable single-phase standard.



Measurements

The RD-21 is a four quadrant  single-phase, simultaneous measuring instrument that registers both forward and reverse energy flow and provides voltage, current, power and energy (Active, Reactive, Apparent) information. The Harmonic Analysis option makes available the analysis of customer load though the 50th harmonic order while the Built-in Comparator option provides for the automatic calculation of test results for the meters and standards being tested.



Meter and Standard Testing

The compact design of the RD-21 makes it an ideal reference standard for field testing applications where optimal accuracy is required.  The RD-21 can be used with a controlled current source to test revenue meters and reference standards. In field applications the RD-21 can perform a single-phase meter accuracy test using existing service load. Pickups to sense meter disk rotation or calibration pulses of infrared, visible light, or KYZ signal plug directly into the standard. The RD-21 is ideal for testing high end energy meters found in power plants, substations, inter-tie points and at large utility customer accounts. The RD-21 may serve as a secondary standard to test portable field standards or standards within meter test benches.  The RD-21 is also ideal to be integrated as the reference standard within a meter test bench.



Intuitive User Interface

The RD-21’s LCD and five-button keypad provides a direct interface to the end user while the RD-21’s RS-232 port, utilized with the applicable software, allows for remote PC control and configuration of the RD-21. Utilizing the five-button keypad and observing the LCD, the user is able to scroll through the various measurement functions of the RD-21 and toggle between the different menu screens.  The amount of measurement information and the number of menu screens viewable is determined by the model number of the RD-21.



Technical Data



Package Contents

• RD-21 Standard
• RD-2x and RD-3x Manual CD
• RD-2x and RD-3x Getting Started Guide



OPERATING RANGE

• Current (Autoranging)
• .02 to 67 amps per input (three input option)
• .02 to 75 amps per input (three input extended range option)
• .02 to 120 amps per input (one input option)
• Input voltage: 30 to 600 volts (Autoranging)
• Auxiliary power input: 60 to 600 volts (Autoranging)
• Frequency: 45 to 65 Hz
• Phase Angle: 0 to 360° or -180 to 180°
• Power Factor: -1 to 1
• Temperature: –20° to +70°C (-4° to +158°F)
• Humidity: 0% to 95% non-condensing
• Shock and vibration: Any that is not destructive



PHYSICAL DESCRIPTION

• Weight: 2.5 kg (5.5 lbs); 3.6 kg (8lbs) shipping weight
• Size 190.5 mm (7.5") H x 139.7 mm (5.5") D excluding strap
• Backlit LCD, 4 line by 16 character
• Current inputs: 6mm jacks
• Potential and Aux power inputs: 4mm Banana type jacks
• BNC connector (port 1) used for input/gating
• BNC connector (port 2) used for pulse outputs
• BNC connector (port 3) used for three phase SYNC or analog sense
• 5 membrane button keypad: UP/DOWN/ESC-RESET/ENTER/MODE
• 8 pin RJ-45 jack for RS-232 communication
• Pickup input for direct interface to RR-DS, RR-1H, or RR-KYZ
• Clamp-on CT input for optional clamp-on current transformer



TEST AND CALIBRATION

• 50 or 60 Hz calibration can be provided
• Re-calibration interval: 365 days
• Warm up time: 30 seconds



ACCURACY

Guaranteed accuracy specification includes stability, traceability uncertainty, power factor, and test system errors.



Guaranteed Accuracy: ±0.02%


Temperature Influence outside normal operating temperature range per °C: ±0.0005%For Power Factors of 100% and 50% output for Whrs, VARhrs, VAhrs there is no impact on accuracy. For Power Factor of <0.5 (PF between - 60° and -90°) then Guaranteed Case Accuracy is ± 0.02%/PF.



PROTECTION

• Isolation: Complete: Input/output/power/case/control
• Dielectric withstand: 2.3 kVrms, 60Hz, 60 seconds
• Surge withstand: IEEE 472 and ANSI 37.90
• Fuses: #34.3117 for potential and auxiliary power



INPUTS (Port 1)

• Display Gate:BNC with 150 ohms pull up to 5 volts, clamped at 5.7 volts
• Gate Rate:200 nS pulse width minimum, maximum 20 Hz repetition rate



OUTPUTS (Port 2)

• Type: BNC, Open collector, clamped at 27 volts (50mA max)
• Frequency: Max 2.1 MHz (200 nS pulse width minimum)
• Metrics: Selectable, i.e. Watt hours, VAR hours, VA Hours, etc.
• Pulse value: Programmable (0.00001 Wh/pulse Default)



QUALITY

Meets all applicable ANSI and IEC specifications
• Radian Research’s calibration procedures are in compliance with
  MIL-STD-45662A and ANSI/NCSL Z540-1-1994
• Radian Research’s primary transfer standards are traceable to NIST
• Radian Research’s quality system is ISO-9001-2000 certified
• Warranty: Two years parts and labor


17025 Accredited Certificate option available



RD-21 Models


 
MODEL MEASUREMENT FUNCTIONS
RD-21-112 Dytronic Portable Standard, 0.02% Accuracy, Built-In Comparator, Three 67Amp Current Inputs (200Amp Single Phase), Whrs, Volts, Amps, VARhrs
   
RD-21-232 Dytronic Portable Standard, 0.02% Accuracy, Built-In Comparator, Harmonic Analysis, Three 67Amp Current Inputs (200Amp Single Phase), Whrs, Volts, Amps, VARhrs, VAhrs, Qhrs, Watts, VARs, VA, Phase Angle, Power Factor, Frequency
   
RD-21-332 Dytronic Portable Standard, 0.02% Accuracy, Built-In Comparator, Current Clamp Input, Harmonic Analysis, Three 67Amp Current Inputs (200Amp Single Phase), Whrs, Volts, Amps, VARhrs, VAhrs, Qhrs, Watts, VARs, VA, Phase Angle, Power Factor, Frequency, Vhr, Ahr, V2hr, A2hr, Min & Max Measurements: All Indicating Functions
   
RD-21-372 Dytronic Portable Standard, 0.02% Accuracy, Built-In Comparator, Current Clamp Input, Harmonic Analysis, Analog Sense, Three 67Amp Current Inputs (200Amp Single Phase), Whrs, Volts, Amps, VARhrs, VAhrs, Qhrs, Watts, VARs, VA, Phase Angle, Power Factor, Frequency, Vhr, Ahr, V2hr, A2hr, Min & Max Measurements: All Indicating Functions
   
RD-21-433 Dytronic Portable Standard, 0.02% Accuracy, Built-In Comparator, Current Clamp Input, Harmonic Analysis, Three 75Amp Current Inputs (225Amp Single Phase), Whrs, Volts, Amps, VARhrs, VAhrs, Qhrs, Watts, VARs, VA, Phase Angle, Power Factor, Frequency, Vhr, Ahr, V2hr, A2hr, Min & Max Measurements: All Indicating Functions, AVG Response: VAhrs, VA, Volt, Vhrs, Amps, Ahrs
 


Accessories




RD-BR1
CT Burden & Ratio Analysis Module

RM-111
Automated Comparator

RR-PCSuite
Testing and Analysis PC Software

RR-1H
Optical Pickup

RR-KYZ
Pulse Input Adapter with 4-Pin plug

RR-DS
Disk Sensor

Cables and Leads

 

Current Probes

 

IRDS
Sensor

RR-Kit
Software for Custom Application Development

Soft Transit Case
For RD Standards and Accessories
2x Hard Case Hard Transit Case
For RD Standards and Accessories

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