S3-RD,N3-RD REACTIVE POWER(VAR) TRANSDUCER
Quick Overview
S3-RD-1: 1φ2W, Accuracy: ± 0.2% RO； N3-RD-1: 1φ2W, Accuracy: ± 0.5% RO. S3-RD-3 3φ3W, Accuracy: ± 0.2% RO； S3-RD-3 3φ3W, Accuracy: ± 0.5% RO S3-RD-3A 3φ4W, Accuracy: ± 0.2% RO； S3-RD-3A 3φ4W,Accuracy: ± 0.5% RO
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1.FEATURES
◆Excellent long term stability (4 ~ 20mA, 500 W )
◆Precision measurement even for unbalance system
◆Precision measurement even for distorted wave
◆High impulse & surge protection (5KV)
◆The case can be mounted on a 35mm rail which complies with DIN 46277
2.DESCRIPTION
Model:
S3-RD-1: 1φ2W, Accuracy: ± 0.2% RO; N3-RD-1: 1φ2W, Accuracy: ± 0.5% RO.
S3-RD-3 3φ3W, Accuracy: ± 0.2% RO; S3-RD-3 3φ3W, Accuracy: ± 0.5% RO
S3-RD-3A 3φ4W, Accuracy: ± 0.2% RO; S3-RD-3A 3φ4W,Accuracy: ± 0.5% RO
A wide range of transducers to measure all forms of reactive power, in both balanced and unbalanced, single or 3 phase system. They utilize the well prove "time division multiplication" method of measuring instantaneous power over a wide range of input waveforms. The circuit diagram shown measured voltage is modulated by circuit of an oscillator. Square wave pulses from a multi-vibrator circuit, with a mark - space ratio varied by the measured voltage and amplitued by the measured current, are fed to an integrator an output amplification circuit. The dc signal produced is then directly proportional to power input - Vars.
3.SPECIFICATION：
3.1INPUT：
Input Range | Max. Input Over Capability | |||
Circuit | Amp. | Voltage | Basic Var | |
Single Phase | 5 A | 110V (120V) | ± 0.5KVar | Ampere: 3 x rated continuous 10 x rated 10 sec. 50 x rated 1 sec.
Voltage: 2 x rated continuous |
220V (240V) | ± 1KVar | |||
3-Phase 3-Wire |
5 A | 110V (120V) | ± 1KVar | |
220V (240V) | ± 2KVar | |||
3-Phase 4-Wire | 5 A | 190V/110V (208/120V) | ± 1.5KVar | |
380V/220V (416/240V) | ± 3KVar:3.2 | |||
3.2 OUTPUT:
DC Output Range | Load Resistance | Output Resistance | Output Ripple | Response Time |
-1 ~ 0 ~ 1V | 1K | ≤0.05W | ≤ 0.5% RO. (Peak) | ≤400mS. 0 ~ 99% |
-5 ~ 0 ~ 5V | ||||
1 ~ 3 ~ 5V | ||||
0 ~ 5 ~ 10V | ||||
-1 ~ 0 ~ 1mA | 0 ~ 10K | 20MW | ||
-10 ~ 0 ~ 10mA | 0 ~ 1K |
5MW | ||
0 ~10 ~ 20mA | 0~500 W | |||
4 ~12 ~ 20mA |
4.Specification:
Aux. power supply | AC 110V ± 15%, 50/60HZ AC 220V ± 15%, 50/60HZ DC24V, 48V, 110V, ± 15% |
Power consumption | -2.5VA, ≤DC 3W |
Power effect | ≤0.1% RO |
Waveform effect | ≤0.2% RO. at distortion factor 30%( PCIR) |
Output load effect | ≤0.05% RO. |
Magnetic field strength | -0.2% RO., 400A/M |
Span adjustment range | 5%RO |
Zero adjustment range | 1%RO |
Operating temperature range | 0 ~ 60℃ |
Operating temperature range | 0 ~ 60℃ |
Storage temperature range | -10 ~ 70℃ |
Temperature coefficient | - 100PPM from 0 to 60℃ ≤ 60PPM, 25。C ± 10℃ |
Max. relative humidity | 95% |
Isolation | Input/output/power/case |
Insulation resistance | 100M W, DC 500V |
Dielectric withstand voltage | Between input/output/power/case (IEC 414, 688,ANSI, C37) AC 2.6KV, 60HZ, 1 min. |
Impulse withstand test | 5KV, 1.2 X 50μS (IEC 255-4, ANSI C37 90a) Common mode & differential mod |
Performance | Designed to comply with IEC688 |
Safety requirements | IEC 414, BS5458 |
1. Model:
S3-RD-1 : 1φ2W reactive power transducer, accuracy : 0.2% RO
S3-RD-1S : 1φ2W reactive power transducer, accuracy : 0.2% RO, (dual output)
S3-RD-3 : 3φ3W reactive power transducer, accuracy : 0.2% RO
S3-RD-3S : 3φ3W reactive power transducer, accuracy : 0.2% RO (dual output)
S3-RD-3A : 3φ4W reactive power transducer, accuracy : 0.2% RO
S3-RD-3AS: 3φ4W reactive power transducer, accuracy : 0.2% RO (dual output)
N3-RD-1 : 1φ2W reactive power transducer, accuracy : 0.5% RO
N3-RD-1S : 1φ2W reactive power transducer, accuracy : 0.5% RO, (dual output)
N3-RD-3 : 3φ3W reactive power transducer, accuracy : 0.5% RO
N3-RD-3S : 3φ3W reactive power transducer, accuracy : 0.5% RO (dual output)
N3-RD-3A : 3φ4W reactive power transducer, accuracy : 0.5% RO
N3-RD-3AS: 3φ4W reactive power transducer, accuracy : 0.5% RO (dual output)
2.Order form:
3. Example of model and parameter filling:
(1) N3-RD-3-555A4BY
0.5%RO, 3φ3W reactive power transducer (cross-phase)
Input nominal current: 5A; input nominal voltage: 100V;
Nominal input power 4: 866W;
Input signal frequency: 50±5Hz;
Output range: 4~12~20mA;
Correspondence -866~0~866Var
Auxiliary power supply: AC220V. Need to measure the reverse power.
(2) S3-RD-3T-155V2BY
0.2%RO,3φ3W reactive power transducer (phase shift method)
Input nominal current: 1A; input nominal voltage: 100V;
Nominal input power 4:170W;
Input signal frequency: 50±5Hz;
Output range: -5~0~5V;
Correspond to -170~0~170Var
Auxiliary power supply: AC220V. Need to measure the reverse power.
(3) S3-RD-3AT-565A4BN
0.5%RO 3φ4W reactive power transducer (phase shift)
Input nominal current: 5A; input nominal voltage: 57.7V;
Nominal input power 4: 866W;
Input signal frequency: 50±5Hz;
Output range: 4~20mA;
Corresponding 0~866Var
Auxiliary power supply: AC220V. There is no need to measure reverse power.
Note:
1 system: T mark, measured by phase shift method; no T mark, measured by cross-phase method.
The output of the 2 dual output channels is 1 (+) and 2 (-) terminals.
3 The value in the output range () is the value specified when the forward and reverse power are output. For reactive power measurement: when the negative value is output, it means that the capacitive impedance of the system is the largest; when the positive value is output, it means that the inductive impedance of the system is the largest.
4 calibration of system power see the previous active power note: 2 items.
5 If the user needs other special calibration, please indicate the parameter value in the contract.
