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Item Voltage V

15/30/60/150/300/600V

Input resistance: Approx. 2 MΩ, Input capacitance:

Approx. 13 pF

Peak voltage of 2.8 kV or rms of 2.0 kV, whichever is less

Peak voltage of 2.0 kV or rms of 1.5 kV, whichever is less

Peak voltage of 1.5 kV or rms of 1.0 kV, whichever is less

600 Vrms (with the output connector protective cover used) CAT II, 400 Vrms (with the output connector protective cover removed) CAT II

With voltage input terminals short and current input terminals open, 50/60 Hz, -80 dB or more (±0.01% of range or less)

Reference value: 50 kHz max., ±{(maximum range rating)/(range rating) × 0.001 × 1% of rng} or less (voltage range, 0.5 A to 20 A current range)

±{(maximum range rating)/(range rating) × 0.0002 × 1% of rng} or less (WT200, 5 mA to 200 mA range)

0.01% or more. The unit of "f" is kHz.

Binding posts

Simultaneous conversion of voltage and current inputs, Resolution: 12 bits, Maximum conversion rate: Approx. 26 µs (at approx. 38 kHz)

Range can be selected manually, automatically, or by communication control.

Range up: When the measured value exceeds 110% of the rated range or the peak value exceeds approximately 300% of the rated range

Range down: When the measured value becomes less than 30% of the rated range and the peak value is less than approximately 300% of the subordinate range

One of the following modes can be set (manually or by communication control): RMS: True RMS measurements for both voltage and current;

V MEAN: Rectified mean calibrated to an RMS sine wave measurement for voltage, and true RMS measurement for current; DC: Mean value measurement for both voltage and current

Resistance voltage divider

Current A

Shunt input

Direct input: 5/10/20/50/100/200 mA (for WT200 only)

0.5/1/2/5/10/20 A (for WT200/WT130)

External input (optional): 2.5/5/10 V or 50/100/200 mV

Direct input: Approx. 6 mΩ + approx. 0.1 µH (0.5 to 20 A, WT200/WT130),Approx. 500 mΩ (5 mA to

200 mA, WT200) External input: 2.5/5/10 V - approx. 100 kΩ or 50/100/200 mV - approx. 20 kΩ

0.5 to 20 A (WT200/WT130): Peak current of 450 A or rms of 300 A, whichever is less

5 to 200 mA (WT200): Peak current of 150 A or rms of 100 A, whichever is less

For external input, the peak value is equal to or less than 10 times range.

0.5 to 20 A (WT200/WT130): Peak current of 150 A or rms of 40 A, whichever is less

5 to 200 mA (WT200): Peak current of 30 A or rms of 20 A, whichever is less

For external input, the peak value is equal to or less than 10 times range.

0.5 to 20 A (WT200/WT130):

Peak current of 100 A or rms of 25 A, whichever is less (WT200)

Peak current of 100 A or rms of 30 A, whichever is less (WT130)

5 to 200 mA (WT200): Peak current of 30 A or rms of 20 A, whichever is less

For external input, the peak value is equal to or less than 5 times range.

Direct input: Large binding posts, External input: Safety terminals

Input circuit type

Rated inputs (range)

Equipment loss (input resistance)

Instantaneous maximum allowable

input for one cycle, 20 ms

Instantaneous maximum allowable

input for 1 sec.

Continuous maximum allowable input

Continuous maximum common-mode

voltage (at 50/60 Hz input)

Common-mode rejection ratio at 600 Vrms

between input terminal and case

Input terminals

A/D conversion

Range switching

Automatic range switching

Measurement mode switching

Floating input

Input

Notes: Direct input and external sensor input of current cannot be used simultaneously. When the input is switched for use, note that the ± terminals are shared.

Specifications

Item Voltage/current

DC:

10Hz % f , 45Hz :

45Hz % f % 66Hz :

66Hz , f % 1kHz :

1kHz , f % 10kHz :

10kHz , f % 20kHz

Reference value

20kHz

, f %

50kHz :

*DC: ±0.2% of range is added if the 0.5/1 A range is selected (WT130 only)

For the input range of 10% to 110%, the above specified accuracy is valid. For the input range of 110% to 130%, the above specified reading accuracy increased by 0.5 times is added to the accuracy.

The above specified reading accuracy increased by 0.5 times is added to the accuracy (within 3 months after calibration).

±0.03% of range/°C at 5 to 18°C and 28 to 40°C

4 times/s

± (0.2 % of rdg + 0.2 % of rng)

± (0.3 % of rdg + 0.2 % of rng)

± (0.15 % of rdg + 0.1 % of rng)

± (0.3 % of rdg + 0.2 % of rng)

± (0.2 % of rdg + 0.3 % of rng)

± {(0.05 × )% of rdg}

± (0.5 % of rdg + 0.5 % of rng)

± [{0.15 × (f-10)}% of rdg]

± (0.5 % of rdg + 0.5 % of rng)

± [{0.15 × (f-10)}% of rdg]

Active power

DC:

10Hz % f , 45Hz :

45Hz % f % 66Hz :

66Hz , f % 1kHz :

1kHz , f ^ 10kHz :

10kHz , f % 20kHz :

Reference value

20kHz

, f % 50kHz :

*DC: ±0.2% of range is added if the 0.5/1 A range is selected (WT130 only)

cosϕ = 0

45 Hz % f % 66 Hz: Add ±0.25% of range to display accuracy.

Reference data (50 kHz max.): ±{(0.23 + 0.4 x f)% of rng}

1 > cosϕ > 0

Add the value of the influence of cosϕ = 0 times tanϕ to display accuracy.

Note that ϕ represents the phase angle between voltage and current.

± (0.3 % of rdg + 0.3 % of rng)

± (0.5 % of rdg + 0.3 % of rng)

± (0.2 % of rdg + 0.1 % of rng)(WT200)

± (0.25 % of rdg + 0.1 % of rng)(WT130)

± (0.5 % of rdg + 0.3 % of rng)

± (0.3 % of rdg + 0.5 % of rng)

± {(0.08 × f)% of rdg}

± (0.8 % of rdg + 0.8 % of rng)

± [{0.19 × (f-10)}% of rdg]

± (0.8 % of rdg + 0.8 % of rng)

± [{0.25 × (f-10)}% of rdg]

Method

Frequency range

Crest factor

Display accuracy

Accuracy

(within 3 months after calibration)

Conditions:

Temperature: 23 ± 5°C

Humidity: 30 to 75% R.H.

Supply voltage: 100 V ± 5%

Input waveform: Sine wave

Common-mode voltage: 0 V DC

Filter: ON at 200 Hz or less

Scaling: OFF

After CAL is performed, accuracy is

assured by YOKOGAWA calibration

system.

Note: The unit of "f" in accuracy

expressions is kHz.

Effect of power factor

Note: The unit of "f" in accuracy

expressions is kHz.

Effective input range

Accuracy (

within 12 months after calibration

)

Temperature coefficient

Display update rate

Digital sampling method and summation averaging method

DC, 10 Hz to 50 kHz

"3" at rated input

Measurement Functions

Note: "rdg" means reading and "rng" means range.

Communication

Either GP-IB or RS-232-C is selected.

GP-IB

Electrical and mechanical specifications: IEEE Std. 488-1978 (JIS C 1901-1987)

Functional specifications: SH1, AH1, T5, L4, SR1, RL1, PR0, DC1, DT1, C0

Protocol: IEEE Std. 488.2-1987

Code used: ISO (ASCII) code

Address: 0 to 30 talker/listener addresses are settable.

RS-232-C

Transmission mode: Start-stop synchronization

Baud rate: 75, 150, 300, 600, 1200, 2400, 4800, 9600 bps

Frequency Measurement

Input: One of V1, V2, V3, A1, A2, and A3 is selected.

Operating principle: Reciprocal counting method

Frequency range: 10 Hz to 50 kHz

Accuracy: ±(0.1% of rdg + 1 digit)

Minimum input is more than 30% of rated range.

When an input frequency is less than 200 Hz, FILTER must be ON to obtain the speci-

fied accuracy.

Minimum input frequency is more than 20% of frequency measurement range.

Summary of content (4 pages)

PAGE 1
Specifications Input Item Current A Voltage V Floating input Input circuit type Resistance voltage divider Rated inputs (range) Shunt input 15/30/60/150/300/600V Direct input: 5/10/20/50/100/200 mA (for WT200 only) 0.5/1/2/5/10/20 A (for WT200/WT130) External input (optional): 2.5/5/10 V or 50/100/200 mV Equipment loss (input resistance) Input resistance: Approx. 2 MΩ, Input capacitance: Approx. 13 pF Direct input: Approx. 6 mΩ + approx. 0.1 µH (0.5 to 20 A, WT200/WT130),Approx.
PAGE 2
Active power (W) 1-phase 2-wire Apparent power (VA) VA=V × A W 1-phase Wi 3-wire i=1, 3 Reactive (var) var i i=1, 3 = (VA i)2 – Wi2 i=1, 3 Σ VA =W1+W3 =VA 1+VA 3 Σ var Computation =var1+var3 3-phase Wi 3-wire i=1, 3 (twopowerΣ W meter method) =W1+W3 3-phase 3-wire (threepowermeter method) Wi i=1, 2, 3 (Note that W2 does not have physical meaning.
PAGE 3
External Input (Optional) Harmonic Analysis Function (Optional) Either /EX1 or /EX2 can be selected as a voltage-output-type current sensor. /EX1: 2.5/5/10 V /EX2: 50/100/200 mV Specifications: See the “Input” item. Method: Comparator Output (Optional) Output method: Normally open and normally closed relay contact outputs (in pairs) Number of output channels and channel setup: 4 (settable for each channel) Contact capacity: 24 V/0.5 A D/A output (4 channels): See the “D/A Converter (Optional)” item.
PAGE 4
Related Products ■ WT2010/WT2030 Digital Power Meter ■ Enhanced power meter, incorporating a total harmonic analysis function conforming to the IEC standard. General-purpose mid-class models suitable for a wide range of applications ● Outstanding performance: 0.03%/DC, 2 Hz to 500 kHz ● High accuracy: 0.08% (45 to 66 Hz) ● Total harmonic current/Flicker conforming to IEC1000-3-2 and -3 can be measured. ● Frequency response: DC, 0.5 Hz to 300 kHz ● High accuracy: 0.