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S3-RD,N3-RD REACTIVE POWER(VAR) TRANSDUCER

Power transducer S3,N3 series power 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

5.Trminal Connection
5.1 S3-RD-1N3, -RD-1 (1φ2W):

5.2 S3-RD-3, N3-RD-3 (3φ3W)


6.THE OUTSIDE DIMENSION (UNIT:mm)

7.PANEL MOUNTING HOLES (UNIT:mm)

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.

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