1. 1 5A 200A 6600V HOW TO DETERMINE LIE WATTAGE... WATT The standard voltage rating is 110V, the standard current rating is 5A, the transducer range is 1000W for 100% input with the standard specifications for 3phase watt transducers. Since the transducer input, 110V and 5A,is already transformed by PT and CT one the power line, the actual line wattage must be multiplied by the rate of transformation. W = PT Ratio x CT Ratio x 1000W (INPUT RANGE) [example] PT ratio:6600V/110V = 60 CT ratio:200A/5A = 40 W = 60 x 40 x 1000W = 2400kW The line wattage rating is then 0 to 2400kW. WATT RANGE _ W =  3 EI cos  where E = 110V (rating) I = 5A (rating) When the cos  equals 1, W will be given as 952.62. Considefing the operational function of E value, the watt range is 0 to 1000. OUTPUT LOAD 1 2 3 5A 110V SOURCE WATT TRANSDUCER 1000W PT CT ? 110v WATTHOUR A standard 3-phase watt transducer accepts the input 110V, 5A and 1000W range.When the watthour is 1pulse/1Wh, mode is open collector or Dry-contact or Voltage pulse.  Wh pulse range = WATT standard range pulse/1hour [example] 3-phase INPUT range 110V,5A and 1000W range, pulse range = 1000pulse/1hour WATTHOUR PULSE RATIO 1 pulse ratio = PT ratio x CT ratio x Wh [example] PT ratio:3300V/110V = 30 CT ratio:200A/5A = 40 1 pulse = 30 (PT ratio) x 40 (CT ratio) x Wh = 1200Wh TERMINOLOGY  APPARENT POWER(VA) REACTIVE POWER (Var) ACTIVE POWER (W)  = Phase angle between current and voltage POWER The general term “ power ” means the “ active ” power, and in more strict terms, the “ power ” includes also the “ apparent ” power and the “ reactive ” power. APPARENT POWER The power value calculated by simple multiplication of the rated voltage by the rated current. ACTIVE POWER The power value to be converted into any energy form at the load. Unit is W (watt). The W is given with the equation : W = El cos  (3-phase) The cos  equals the power factor, cosine of the phase angle between voltage and current, therefore the equation is also given as: W = Voltage  Current  Power Factor WATT RATIO A standard 3-phase watt transducer accepts the input 110V, 5A and 1000W range.When the watt ratio with these conditions is given as 1, the acceptable Watt Ratio will be 0.5 to 1.2. W = PT Ratio x CT Ratio x 500 to 1200W [example] PT ratio:6600V/110V = 60 CT ratio:200A/5A = 40

2. 2 RIPPLE AC factor existing in a transmitter output. Represented as peak-to-peak value or as RMS value. REACTIVE POWER The power value which is not converted into energy. When the load has a greater inductive factor, more current is required for creating the same active power value. Unit is Var (volt-ampere reactive). The Var is given with the equation: Var = El sin  INPUT BURDEN The power value consumed at transformers at the primany side. Unit = VA = voltage rating  current rating OVERLOAD CAPACITY The rush current value, generated at start-up of a motor, allowable to the transmitter. ■ HOW TO REPRESENT ALTERNATING POWER... An instantaneous value I alternating current/voltage varies according to time. In the other part, a peak value is not able to include effects by waveform distortion, while a simple average value calculation equals zero. The following are examples for re presenting alternating current/voltage. PEAK VALUE The maximum value in the waveform. PEAK-TO-PEAK VALUE The absolute value between the positive peak value and the negative peak value. RMS(root-mean-square) VALUE The square root of the average of the squares of the instantan  eous value. This AC power are able to generate the same heat (energy) as the same DC power value. AVERAGE VALUE (in alternating current) The average of absolute value. Ripple is represented with “peak-to-peak” value or “r.m.s” value  Ripple DC Factor AverageRMS Peak-to-Peak Peak WAVEFORM TYPERMSMADRMS/MADCREST FACTOR Sinusoidal Waveform Square Waveform or DC Triangular Waveform Vm 0.707 Vm Vm 2  0.637 Vm Vm  = 1.111 2 1  = 1.156 = 1.414 1 = 1.732 RMS SENSING & AVERAGE SENSING Vm 0 0 0 The crest factor indicated in the above in the above table is given from the peak value divided by RMS value. It means the r.m.s value is stable in any waveforms. The ratio value [RMS/MAD] in sinusoidal waveform equals 1.111, Therefore by multiplying the average value by 1.111, an accu  rate output is given in average sensing, while there will be a significant difference in other type of waveforms such like a thyristor output.

3. 3 INPUT & OUTPUT ■ INPUT input : 0-1A AC or 0-5A AC Operational range : 0-120% Permissible over range : 1000% for 5 seconds 200% for 20 seconds 120% continuously Frequency : 60 or 50Hz Input loss : 0.5VA or less MODEL & SUFFIX CODE SELECTION HDA MODEL ■ INPUT ■ OUTPUT ■ MODE ORDERING INFORMATION Specify code number and variables * Code number : HDA-input/output/mode ex : HDA-2AR * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H75 D113mm Weight : HD POWER TRANSDUCER SERIES AMPERE TRANSDUCER MODEL HDA -

4. 4 CONNECTION DIAGRAM OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5 M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span LOAD resistance DIMENSION & INSTRUCTIONS ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span Ω LOAD resistance

5. 5 INPUT & OUTPUT ■ INPUT input : 0-1A AC or 0-5A AC 3PHASE 3CT Operational range : 0-120% Permissible over range : 1000% for 5 seconds 200% for 20 seconds 120% continuously Frequency : 50/60Hz Input loss : 0.5VA or less HD3A MODEL ■ INPUT ■ OUTPUT ■ MODE ORDERING INFORMATION Specify code number and variables * Code number : HD3A-input/output/mode ex : HD3A-2AR * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100M Ω or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA (DC 24V) Size : W75 H150 D113mm Weight : The CT transducer Model HD3A converts afternating Current form a CT into a DC output. The input is sensed in R.M.S * No load adjustments requrired HD POWER TRANSDUCER SERIES 3 PHASE AMPERE TRANSDUCER MODEL HD3A - MODEL & SUFFIX CODE SELECTION

6. 6 CONNECTION DIAGRAM OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5 M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span LOAD resistance DIMENSION & INSTRUCTIONS ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance

7. 7 INPUT & OUTPUT ■ INPUT input : AC 0-150V or AC 0-300V or AC 0-500V Operational range : 0-120% Permissible over range : 1000% for 5 seconds 200% for 20 seconds 120% continuously Frequency : 50/60Hz Input loss : 0.5VA or less HDV MODEL ■ INPUT ■ MODE ■ OUTPUT ORDERING INFORMATION Specify code number and variables * Code number : HDV-input/output/mode ex : HDV-2AR * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H75 D113mm Weight : The PT transducer Model HDV converts afternating Voltage form a PT into a DC output. The input is sensed in R.M.S * No load adjustments requrired HD POWER TRANSDUCER SERIES VOLTAGE TRANSDUCER MODEL HDV - MODEL & SUFFIX CODE SELECTION

8. 8 CONNECTION DIAGRAM OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5 M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span LOAD resistance DIMENSION & INSTRUCTIONS ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance

9. 9 INPUT & OUTPUT ■ INPUT input : AC 0-150V or AC 0-300V or AC 0-500V 3PHASE Operational range : 0-120% Permissible over range : 1000% for 5 seconds 200% for 20 seconds 120% continuously Frequency : 50/60Hz Input loss : 0.5VA or less HD3V MODEL ■ INPUT ■ MODE ■ OUTPUT ORDERING INFORMATION Specify code number and variables * Code number : HD3V-input/output/mode ex : HD3V-2AR * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : The PT transducer Model HD3V converts afternating Voltage form a PT into a DC output. The input is sensed in R.M.S * No load adjustments requrired HD POWER TRANSDUCER SERIES 3 PHASE VOLTAGE TRANSDUCER MODEL HD3V - MODEL & SUFFIX CODE SELECTION

10. 10 CONNECTION DIAGRAM OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5 M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span LOAD resistance DEMENSION & INSTRUCTIONS ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance

11. 11 INPUT & OUTPUT ■ INPUT * Voltage Side ( PT side ) Operational range : 0-110% Permissible over range : 150% for 10 seconds 120% continuously * Current Side ( CT side ) Operational range : 0-120% Permissible over range : 1000% for 5 seconds 150% for 10 seconds 120% continuously Frequency : 60 or 50Hz HDW MODEL ■ PHASE & WIRE ■ VOLTAGE & AMPERE ORDERING INFORMATION Specify code number and variables * Code number : HDW-input/output/mode ex : HDW-4AA * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : The Watt transducer Model HDW provides a DC output proportional to AC active power. * Little ropple : stable output * Input - output isolated ■ OUTPUT MODEL & SUFFIX CODE SELECTION HD POWER TRANSDUCER SERIES WATT TRANSDUCER MODEL HDW - 1P2W 3P3W 3P4W

12. 12 ■ INPUT RANGE 1-PHASE/2-WIRE1-PHASE/3-WIRE 3-PHASE/3-WIRE3-PHASE/4-WIRE HOW TO DETERMINE WATTAGE RANGE Measuring Wattage(W) = PT ratio  CT ratio  STANDARD RANGE[W] Check that the required calibration range is within the available range in the table, specify this range when ordering. [example] 3-phase/3-wire, PT 3300/110V, CT 250/5A Measuring wattage = 3300/110  250/5  1000w = 150KW ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12k Ω 0-5mA 0-2400 Ω DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10k Ω or more 1 Ω or less 0-100mV 100k Ω or more 0-1V 1k Ω or more 0-10V 10k Ω or more 0-5V 1-5V 5k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA

13. 13 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS

14. 14 HDWH MODEL ■ PHASE & WIRE ■ VOLTAGE & AMPERE ORDERING INFORMATION Specify code number and variables * Code number : HDWH-phase/wire-voltage/ampere -Pulse mode-pulse range ex : HDWH-4AA1 * special output range : code O Pulse range : 0 - 10Hz GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) The Watthour transducer Model HDWH provides a PULSE prop- ortional to AC active power. * Little ropple : stable output * Input - output isolated * Frequency output available for totalizing ■ OUTPUT * PULSE MODE * PULSE RANGE HD POWER TRANSDUCER SERIES WATTHOUR TRANSDUCER MODEL HDWH - MODEL & SUFFIX CODE SELECTION 1P2W 3P3W 3P4W

15. 15 ■ INPUT RANGE INPUT & OUTPUT ■ INPUT * Voltage Side ( PT side ) Operational range : 0-110% Permissible over range : 150% for 10 seconds 120% continuously * Current Side ( CT side ) Operational range : 0-120% Permissible over range : 1000% for 5 seconds 150% for 10 seconds 120% continuously Frequency : 60 or 50Hz INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : 1-PHASE/2-WIRE1-PHASE/3-WIRE 3-PHASE/3-WIRE3-PHASE/4-WIRE ■ HOW TO DETERMINE PULSE WATTHOUR PULSE RATIO RANGE 1 pulse ratio = PT ratio x CT ratio [example] 3-phase / 3-wire 110V. 5A PT : 3300V/110V CT : 250A/5A 1 pulse ratio = 30 (PT ratio) x 50 (CT ratio) x Wh = 1500Wh Measuring Wattage Calibration Range [W] = PT ratio x CT ratio Check that the required calibration range is within the available range in the table WATTHOUR PULSE RANGE  pulse ratio = Calibration WATT range / 1hour [example] 3-phase / 3-wire 110V. 5A. 1000W pulse range = 1000 pulse / 1hour

16. 16 CONNECTION DIAGRAM DEMENSION & INSTRUCTIONS * MODE A. Open collector B. relay contact C. Voltage pulse Min 1 V DC 100mA Relay Capacity High + 15V 5mA Max 20V DC 100mA 100V, 0.1 A Low 0V * ON duration : 250 msec. [ min, 50msec., max. wattinput range/1hour  1/2 sec * Frequency range : 0 - 2,777Hz ■ OUTPUT

17. 17 INPUT & OUTPUT ■ INPUT * Voltage Side ( PT side ) Operational range : 0-110% Permissible over range : 150% for 10 seconds 120% continuously * Current Side ( CT side ) Operational range : 0-120% Permissible over range : 1000% for 5 seconds 150% for 10 seconds 120% continuously Frequency : 60 or 50Hz HDWWH MODEL ■ PHASE & WIRE ■ VOLTAGE & AMPERE ORDERING INFORMATION Specify code number and variables * Code number : HDWWH-phase/wire-voltage/ampere -Analog output-pulse mode-pulse range ex : HDWWH-4AAA1 * special output range : code 0 A = -10~20mA, V = -10~12V Pulse range : 0 - 10Hz GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : The W&Watthour transducer Model HDWWH provides a DC signal output and PULSE proportional to AC active power * Little ropple : stable output * Input - output isolated * Frequency output available for totalizing ■ OUTPUT * PULSE OUTPUT * PULSE MODE * PULSE RANGE * ANALOG OUTPUT HD POWER TRANSDUCER SERIES W&WATTHOUR TRANSDUCER MODEL HDWWH - MODEL & SUFFIX CODE SELECTION Adjustments : zero and span  5% Over-range output = 0-120% 1P2W 3P3W 3P4W

18. 18 ■ INPUT RANGE 1-PHASE/2-WIRE1-PHASE/3-WIRE 3-PHASE/3-WIRE 3-PHASE/4-WIRE  pulse ratio = Calibration WATT range / 1hour [example] 3-phase / 3-wire 110V. 5A. 1000W pulse range = 1000 pulse / 1hour ■ HOW TO DETERMINE PULSE WATTHOUR PULSE RATIO RANGE Measuring Wattage Calibration Range [W] = PT ratio x CT ratio Check that the required calibration range is within the available range in the table WATTHOUR PULSE RANGE 1 pulse ratio = PT ratio x CT ratio x Wh [example] 3-phase / 3-wire 110V. 5A PT : 3300V/110V CT : 250A/5A 1 pulse ratio = 30 (PT ratio) x 50 (CT ratio) x Wh = 1500Wh ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12k Ω 0-5mA 0-2400 Ω DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10k Ω or more 1 Ω or less 0-100mV 100k Ω or more 0-1V 1k Ω or more 0-10V 10k Ω or more 0-5V 1-5V 5k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA HOW TO DETERMINE WATTAGE RANGE Measuring Wattage(W) = PT ratio  CT ratio  STANDARD RANGE[W] Check that the required calibration range is within the available range in the table, specify this range when ordering. [example] 3-phase/3-wire, PT 3300/110V, CT 250/5A Measuring wattage = 3300/110  250/5  1000w = 150KW

19. 19 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS * MODE A. Open collector B. Relay contact C. Voltage pulse Min 1 V DC 100mA Relay Capacity High + 15V 5mA Max 20V DC 100mA 100V, 0.1 A Low 0V * ON duration : 250 msec. [ min, 50msec., max. wattinput range/1hour  1/2 sec * Frequency range : 0 - 2,777Hz ■ OUTPUT

20. 20 INPUT & OUTPUT ■ INPUT * Voltage Side ( PT side ) Operational range : 0-110% Permissible over range : 150% for 10 seconds 120% continuously * Current Side ( CT side ) Operational range : 0-120% Permissible over range : 1000% for 5 seconds 150% for 10 seconds 120% continuously Frequency : 60 or 50Hz ■ output Calibration polarity * Negative in LEAD * Positive in LAG HDK MODEL ■ PHASE & WIRE ■ VOLTAGE & AMPERE ORDERING INFORMATION Specify code number and variables * Code number : HDK-phase/wire-voltage/ampere-output ex : HDK-4AA * polarity 선택사양시 GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : The VAR transducer Model HDK provides a DC output proportional to AC reactive power. * Little ropple : stable output * Input - output isolated ■ OUTPUT HD POWER TRANSDUCER SERIES Var TRANSDUCER MODEL HDK - MODEL & SUFFIX CODE SELECTION 1P2W 3P3W 3P4W

21. 21 ■ INPUT RANGE 1-PHASE/2-WIRE1-PHASE/3-WIRE 3-PHASE/3-WIRE3-PHASE/4-WIRE HOW TO DETERMINE Var RANGE Measuring Var Value(Var) = PT ratio  CT ratio  STANDARD RANGE[Var] Check that the required calibration range is within the available range in the table, specify this range when ordering. [example] 3-phase/3-wire, PT 3300/110V, CT 250/5A Measuring Var Value = 3300/110  250/5   500Var =  75KVar ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12k Ω 0-5mA 0-2400 Ω DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10k Ω or more 1 Ω or less 0-100mV 100k Ω or more 0-1V 1k Ω or more 0-10V 10k Ω or more 0-5V 1-5V 5k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA

22. 22 CONNECTION DIAGRAM DEMENSION & INSTRUCTIONS

23. 23 HDKH MODEL ■ PHASE & WIRE ■ VOLTAGE & AMPERE ORDERING INFORMATION Specify code number and variables * Code number : HDKH-phase/wire-voltage/ampere- POLARITY -Pulse mode-pulse range ex : HDKH-4APA1 * special output range : code O Pulse range : 0 - 10Hz GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) The Varhour transducer Model HDKH provides a PULSE prop- ortional to AC reactive power. * Little ropple : stable output * Input - output isolated * Frequency output available for totalizing ■ OUTPUT * PULSE MODE * PULSE RANGE HD POWER TRANSDUCER SERIES VarHOUR TRANSDUCER MODEL HDKH - MODEL & SUFFIX CODE SELECTION ■ Var POLARTIY 1P2W 3P3W 3P4W

24. 24 ■ INPUT RANGE INPUT & OUTPUT ■ INPUT * Voltage Side ( PT side ) Operational range : 0-110% Permissible over range : 150% for 10 seconds 120% continuously * Current Side ( CT side ) Operational range : 0-120% Permissible over range : 1000% for 5 seconds 150% for 10 seconds 120% continuously Frequency : 60 or 50Hz INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : 1-PHASE/2-WIRE1-PHASE/3-WIRE 3-PHASE/3-WIRE3-PHASE/4-WIRE ■ HOW TO DETERMINE PULSE VarHOUR PULSE RATIO RANGE 1 pulse ratio = PT ratio x CT ratio [example] 3-phase / 3-wire 110V. 5A PT : 3300V/110V CT : 250A/5A 1 pulse ratio = 30 (PT ratio) x 50 (CT ratio) x Varh = 1500Varh Measuring Var Calibration Range [Var] = PT ratio x CT ratio Check that the required calibration range is within the available range in the table VarHOUR PULSE RANGE  pulse ratio = Calibration Var range / 1hour [example] 3-phase / 3-wire 110V. 5A. 1000Var pulse range = 1000 pulse / 1hour

25. 25 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS * MODE A. Open collector B. Relay contact C. Voltage pulse Min 1 V DC 100mA Relay Capacity High + 15V 5mA Max 20V DC 100mA 100V, 0.1 A Low 0V * ON duration : 250 msec. [ min, 50msec., max. wattinput range/1hour  1/2 sec * Frequency range : 0 - 2,777Hz ■ OUTPUT

26. 26 INPUT & OUTPUT ■ INPUT * Voltage Side ( PT side ) Operational range : 0-110% Permissible over range : 150% for 10 seconds 120% continuously * Current Side ( CT side ) Operational range : 0-120% Permissible over range : 1000% for 5 seconds 150% for 10 seconds 120% continuously Frequency : 60 or 50Hz HDKKH MODEL ■ PHASE & WIRE ■ VOLTAGE & AMPERE ORDERING INFORMATION Specify code number and variables * Code number : HDKKH-phase/wire-voltage/ampere -POLARITY-analog output-pulse mode-pulse range ex : HDKKH-4AAAA1 * special output range : code O A = -10~20mA, V = -10~12V Pulse range : 0 - 10Hz GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H150 D113mm Weight : The Var&Varhour transducer Model HDKKH provides a DC signal output and PULSE proportional to AC reactive power * Little ropple : stable output * Input - output isolated * Frequency output available for totalizing ■ OUTPUT * PULSE RANGE * ANALOG OUTPUT HD POWER TRANSDUCER SERIES Var&VarHOUR TRANSDUCER MODEL HDKKH - MODEL & SUFFIX CODE SELECTION Adjustments : zero and span  5% Over-range output = 0-120% * PULSE OUTPUT * PULSE MODE ■ Var POLARTIY : Availability as Var hour mode 1P2W 3P3W 3P4W

27. 27 ■ INPUT RANGE 1-PHASE/2-WIRE1-PHASE/3-WIRE 3-PHASE/3-WIRE 3-PHASE/4-WIRE  pulse ratio = Calibration Var range / 1hour [example] 3-phase / 3-wire 110V. 5A. 1000Var pulse range = 1000 pulse / 1hour ■ HOW TO DETERMINE PULSE VarHOUR PULSE RATIO RANGE Measuring Var Calibration Range [Var] = PT ratio x CT ratio Check that the required calibration range is within the available range in the table VarHOUR PULSE RANGE 1 pulse ratio = PT ratio x CT ratio x Varh [example] 3-phase / 3-wire 110V. 5A PT : 3300V/110V CT : 250A/5A 1 pulse ratio = 30 (PT ratio) x 50 (CT ratio) x Varh = 1500Varh ■ OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5Mohm or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12k Ω 0-5mA 0-2400 Ω DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10k Ω or more 1 Ω or less 0-100mV 100k Ω or more 0-1V 1k Ω or more 0-10V 10k Ω or more 0-5V 1-5V 5k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance (ohm) E = full-scale output (V) I = 1 mA HOW TO DETERMINE Var RANGE Measuring Var Value(Var) = PT ratio  CT ratio  STANDARD RANGE[Var] Check that the required calibration range is within the available range in the table, specify this range when ordering. [example] 3-phase/3-wire, PT 3300/110V, CT 250/5A Measuring Var Value = 3300/110  250/5  1000Var = 150KVar

28. 28 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS * MODE A. Open collector B. Relay contact C. Voltage pulse Min 1 V DC 100mA Relay Capacity High + 15V 5mA Max 20V DC 100mA 100V, 0.1 A Low 0V * ON duration : 250 msec. [ min, 50msec., max. wattinput range/1hour  1/2 sec * Frequency range : 0 - 2,777Hz ■ OUTPUT

29. 29 INPUT & OUTPUT ■ INPUT * Input range : (0.5)LEAD - 1 - 0.5 (log) # Voltage Size ( PT Size ) Operational range : 85-110% Permissible over range : 150% 10 seconds 120% continuously Input loss : 0.5VA # Current Size ( CT Size ) Operational range : 10-120% Permissible over range : 1000% 3 seconds 200% 15 seconds 120% continuously Input loss : 0.5VA HDPF MODEL phase/wire ■ Output polarity ■ Analog output ORDERING INFORMATION Specify code number and variables * Code number : HDPF-input/output/mode ex : HDPF-4AAP * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span 5% Over-range output = 0-120% PERFORMANCE Accuracy : 2 % at input 1 - 0.866; balanced load 4 % at input 0.866 - 0.5; balanced load Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.5% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%), 50/60Hz,2VA Size : W75 H150 D113mm Weight : The Power factor transducer Model HDPF calculates power factor and a proportional DC signal *Little ripple : stable output *Input - output isolated *Unvalance Value voltage/ampere MODEL & SUFFIX CODE SELECTION HD POWER TRANSDUCER SERIES POWER FACTOR TRANSDUCER MODEL HDPF - ■ INPUT

30. 30 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5 MΩ or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 kΩ 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 kΩ or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA ■OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 tions of span LOAD resistance DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 tions of span

31. 31 INPUT & OUTPUT ■ INPUT input : 55-65Hz or 45-55Hz or 45-65Hz Permissible over range : 110 120% for continuously Frequency : 50/60Hz Input loss : 0.5VA or less HDF MODEL ■ INPUT ■ OUTPUT ORDERING INFORMATION Specify code number and variables * Code number : HDF-input/output ex : HDF-1A * special output range : code O A = 0-20mA V = 0-12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H75 D113mm Weight : The Frequency transducer Model HDF provides a precision DC output proportional to deviation(+5Hz) from center frequency (50Hz or 60Hz) * Little ripple : stable output MODEL & SUFFIX CODE SELECTION HD POWER TRANSDUCER SERIES FREQUENCY TRANSDUCER MODEL HDF -

32. 32 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5Mohm or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA ■OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span

33. 33 HDH MODEL ■ INPUT ■ OUTPUT ■ MODE ORDERING INFORMATION Specify code number and variables * Code number : HDH-input/output/mode ex : HDH-2AR * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H75 D113mm Weight : The Vo-transducer Model HDH convers alternatiog voltage from a PT input a DC output This TD of the rectifier type has apoint for memory of maximum instantaneous value of the transient voltage of current during the short circuit or ground fault on the transim- ossion and distribution lines MODEL & SUFFIX CODE SELECTION HD POWER TRANSDUCER SERIES VOLT-DEMAND TRANSDUCER MODEL HDH - INPUT & OUTPUT ■ INPUT input : AC 0-150V or AC 0-300V or AC 0-500V Operational range : 0-120% Permissible over range : 1000% for 5 seconds 200% for 20 seconds 120% continuously Frequency : 50/60Hz Input loss : 0.5VA or less

34. 34 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5Mohm or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA ■OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 Times of span

35. 35 INPUT & OUTPUT HDD MODEL ■ INPUT ■ OUTPUT ORDERING INFORMATION Specify code number and variables * Code number : HDD-input/output/mode ex : HDD-1A Output2 : Availability as output1 : None * special output range : A = -10~20mA V = -10~12V GENERAL SPECIFICATIONS Construction : DIN housings Terminal access on front face Housing materiel : plastic(black) Wiring : 3.0M screw terminals Isolation : AC input/DC output/power Adjustments : zero and span  5% Over-range output = 0-120% PERFORMANCE Accuracy : 0.1% or 0.25% Temp.coefficient : 0.03%/C Insulation resistance : 100Mohm or more with 500V DC Response time : 0.4sec(400ms) Line Voltage effect : 0.1% with 10% change Ripple : 0.25% p-p max. (100/120Hz) Dielectric strength : 2000V AC 1minute input/output/power Surge withstand Voltage : 1.2/50  sec,  5KV (INPUT to OUTPUT to GROUND) INSTALLATION Operating temperature : -5 to +55C Operating humidity : 20-80%RH(non-condensing) Mounting : Wall or DIN rail Power supply : AC 110V or 220V (-15/+10%) 50/60Hz,2VA Size : W75 H75 D113mm Weight : The DC Isolated Converter Model HDD is an isolated signal transmitter featuring fast response time 0.4 seconds * isolated mode : ohotocoupier MODEL & SUFFIX CODE SELECTION HD POWER TRANSDUCER SERIES DC TRANSDUCER MODEL HDD - DC Current : shunt resistor attached to input terminals (0.5W) Input resistance : For resistance values other than listed below, specify when ordering. Input Input Resistance 4 - 20mA : 250 (  ) (100  for orders) 2 - 10mA : 500 1 - 5mA : 1000 0 - 20mA : 50 0 - 16mA : 62.5 0 - 10mA : 100 0 - 1mA : 1000 10 - 50mA : 100 0 - 10  A : 1000 0 - 100  A : 1000 -1 - +1mA : 1000 -10 - +10mA : 100

36. 36 CONNECTION DIAGRAM DIMENSION & INSTRUCTIONS OUTPUT LOAD RESISTANCE IMPEDANCE 4-20mA 0-600 Ω 5M Ω or more 0-20mA 0-600 Ω 0-16mA 0-750 Ω 0-10mA 0-1200 Ω 0-1mA 0-12 k Ω 0-5mA 0-2400 Ω OUTPUT LOAD RESISTANCE IMPEDANCE 0-10mV 10 k Ω or more 1 Ω or less 0-100mV 100 k Ω or more 0-1V 1 k Ω or more 0-10V 10 k Ω or more 0-5V 1-5V 5 k Ω or more 10 Ω 100 Ω * for other ranges within 0-12V, use equation R = E/I where : R = load resistance ( Ω ) E = full-scale output (V) I = 1 mA ■OUTPUT DC Current : 0-20mA DC Minimum span : 1mA zero bias : max. 1.5 Times of span LOAD resistance DC Voltage : 0-12V DC Minimum span : 5mV zero bias : max. 1.5 t Times of span