The WT300E's wide range of functions and enhanced
Accuracy with fast display and update rate:
The WT300E series with the fast display update rate of 100ms, offer's engineers a short tact time in their testing procedures. The basic accuracy for all input ranges is 0.1%
Simultaneous Measurement:
U/I/P/Freq/Integ(+/-)/Harmonics components/ THD with max. 100ms cycle.
In addition to standard power measurements, the WT300E series measures all DC and AC parameters. Additionally, the WT300E series can measure harmonics and perform integration simultaneously without changing the measurement mode. The accompanying WTViewerFreePlus software can monitor and save the 200 parameters used.
The auto-range function is used to select or change the ranges automatically, within specified ranges. This results in shorter range changing times, allowing more efficient testing.
Auto Ranging Function For Integration Measurement
Typically, when power meters operate in an integration mode to measure power consumption and standby power, the measuring ranges need to be fixed. However, if the level of the input exceeds the maximum of the selected range, the test will need to be repeated. The WT300E Series has a high-speed automatic ranging capability in integration mode, which removes the need to repeat any test.
Bandwidth: DC and 0.1Hz to 100 kHz (WT310EH is up to 20 kHz for 40A).
Direct Input: Maximum direct input of up to 600V and 20A, or 40A
High-speed data update (up to 10 readings per second.).
Enhancement points from the WT310/WT330
Changed points from the WT210/WT230
WT300E Series | WT300 Series | WT210/WT230 | ||
Basic power measurement accuracy (50/60 Hz) | 0.1% of reading + 0.05% of range | 0.1% of reading+0.1% of range | 0.1% of reading+0.1% of range | |
Influence of power factor | When power factor (λ)= 0 (S: apparent power) ±0.1% of S for 45 Hz ≤ f ≤ 66 Hz | When power factor (λ)= 0 (S: apparent power) ±0.2% of S for 45 Hz ≤ f ≤ 66 Hz | When power factor (λ)= 0 (S: apparent power) ±0.2% of S for 45 Hz ≤ f ≤ 66 Hz | |
Frequency bandwidth | DC, 0.1 Hz to 100 kHz (WT310EH DC, 0.1 Hz to 20 kHz) | DC, 0.5 Hz to 100 kHz (WT310H DC, 0.1 Hz to 20 kHz) | DC, 0.5 Hz to 100 kHz | |
Direct input current range | WT310E: 12 ranges/5 mA to 20 A, WT310EH: 6 ranges/1 to 40 A WT332E/WT333E: 6 ranges/0.5 to 20A | WT310: 12 ranges/5 mA to 20 A, WT310HC: 6 ranges/1 to 40 A WT332/WT333: 6 ranges/0.5 to 20A | WT210: 12 ranges/5 mA to 20 A, WT230-2ch/WT230-3ch: 6 ranges/0.5 to 20A | |
External current input | EX1:2.5/5/10[V] EX2:50m / 100m / 200m / 500m / 1 / 2[V](OP) | EX1:2.5/5/10[V] EX2:50m / 100m / 200m / 500m / 1 / 2[V](OP) | EX1: 2.5/5/10[V] EX2:50m / 100m / 200m / 500m / 1 / 2[V](OP) | |
Expansion of effective input range for voltage & current (CF=6A) | 2% to 260%*1 | No | No | |
Expansion of maximum displaying value for voltage & current (CF=6A) | 2% to 260%*2 | No | No | |
Simultaneous measurement of RMS, Voltage MEAN & DC | Yes*3 | Yes*3 | No | |
Frequency measurement | 2 channels (voltage & current) | 2 channels (voltage & current) | Selected voltage or current (one) | |
Number of display item | 4 items | 4 items | 3 items | |
Sampling rate | Approximately 100 kS/s | Approximately 100 kS/s | Approximately 50 kS/s | |
Data update rate | 100m/250m/500m/1/2/5/10/20 sec, Auto | 100m/250m/500m/1/2/5 sec | 100m/250m/500m/1/2/5 sec | |
Harmonic measurement | Yes (OP/G5) | Yes (OP/G5) | Yes (OP/HRM) | |
THD calculation maximum order setting | Yes (OP, 1 to 50th) | Yes (OP, 1 to 50th) | No | |
Auto ranging of integration | Yes | Yes | No | |
Communication Interface | USB | Yes | Yes | No |
GP-IB | Yes GP-IB or RS-232 | Yes GP-IB or RS-232 | No | |
RS-232 | Yes GP-IB or RS-232 | Yes GP-IB or RS-232 | Yes (OP) GP-IB or RS-232C | |
Ethernet | Yes (OP) | Yes (OP) | Yes (OP) GP-IB or RS-232C | |
Modbus/TCP (Ethernet) | Yes (OP,/C7) | No | No | |
IEEE standard for GP-IB | IEEE488.2 | IEEE488.2 | IEEE488.1 or IEEE488.2 | |
Comparator function | Yes | Yes | Yes | |
Viewer software (setting & data capturing) | Free (included) | Free (included) | Free (download) |
*1: WT310EH input range is 2% to 260% (20 A range only up to 200%)
*2: WT310EH input range is 2% to 280% (20 A range only up to 220%)
*3: Simultaneous, mode independent measurement using the WTViewerFreePlus PC software.
*: A command compatible mode for the previous WT200 series is available. (IEEE488.2 only) In that mode, the WT300E series and WT300 series works identically to a WT200 series except for the Store (and recall operation) and the Compare functions.
*: Modbus/TCP communication requires /C7 Ethernet option.
Yokogawa WT332E power meter, 2-phase, current range from 0.25A to 20A depending on CF.
Yokogawa WT332E power meter, 3-phase, current range from 0.25A to 20A depending on CF.
Yokogawa WT332E power meter, 3-phase, current range from 10mA to 40A depending on CF.