Atec Yokogawa-WT3000 - Manual (Page 18)

18
Precision Power Analyzer WT3000
Voltage Fluctuation/Flicker Measurement (/FL optional)
• Normal Flicker Measurement Mode
Item Specifications
Measurement Items dc Relative steady-state voltage change
(Measurement Functions) dmax Maximum relative voltage change
d(t) The time during which the relative voltage change during a
voltage fluctuation period exceeds the threshold level
The maximum value within a observation period is displayed for the
items above.
Pst
Short-term flicker value
Plt Long-term flicker value
One observation period 30 min to 15 s
Observation period count
1 to 99
• Measurement of dmax Caused by Manual Switching Mode
Item Specifications
Measurement dmax Maximum relative voltage change
(Measurement Functions)
One observation period 1 minute
Observation period count
24
Averaging Average of 22 measured dmax values excluding the maximum and
minimum values among 24 values
• Items Common to Measurement Modes
Item Specifications
Target voltage/frequency 230 V/ 50 Hz or 120 V/60 Hz
Measured item All installed elements
Measured source input Voltage (current measurement function not available)
Flicker scale 0.01 to 6400P.U. (20%) divided logarithmically into 1024 levels.
Display update 2 s (dc, dmax, and d(t))
For every completion of a observation period (Pst)
Communication output dc. dmax, d(t), Pst, Plt, instantaneous flicker sensation (IFS), and
cumulative probability function (CPF)
Printer output Screen image
External storage output Screen image
Accuracy
dc, dmax: 4% (at dmax = 4%)
Pst:
± 5% (at Pst = 1)
Conditions for the accuracy above
• Ambient temperature: 23
± 1 ° C
• Line filter: OFF
• Input voltage range
220V to 250V at the 300V measuring range (50Hz)
110V to 130V at the 150V measuring range (60Hz)
Cycle-by-cycle measurement (/CC optional)
Synch source Select an external source of U1, I1, U2, I2, U3, I3,
U4, or I4.
(the above parameters are measured continuously
for each cycle of the one sync source signal)
Number of measurements 10-3000
Timeout time 0, 1-3600 seconds (set in units of seconds), 0(approximately
24 hours)
Synch source frequency range 1 Hz to 1000 Hz (for U and I)
0.1 Hz to 1000Hz (for external sync source)
Accuracy U, I, P: Add [(0.3+2*f) % of reading+ ((0.05+0.05*f)
% of range] to the accuracy for normal
measurement. For external sensor input,
Add (100+100*f) uV to the accuracy.
Freq Add [(0.3+2*f)% of reading to the accuracy
for normal measurement.
*f is kHz
GP-IB Interface
Use one of the following by NATIONAL INSTRUMENTS:
• AT-GPIB
• PCI-GPIB and PCI-GPIB+
• PCMCIA-GPIB and PCMCIA-GPIB+
Use driver NI-488.2M version 1.60 or later.
Conforms electrically and mechanically to IEEE St’d 488-1978
(JIS C 1901-1987).
Functional specification SH1, AH1, T6, L4, SR1, RL1, PP0,
DC1, DT1, and C0.
Conforms to protocol IEEE St’d 488.2-1987.
Encoding ISO (ASCII)
Mode Addressable mode
Address 0–30
Clear remote mode Remote mode can be cleared using the LOCAL key (except
during Local Lockout).
Ethernet Communications (/C7 Optional)
Number of communication ports 1
Connector type
RJ-45 connector
Electrical and mechanical specifications Conforms to IEEE 802.3.
Transmission system Ethernet 100BASE—TX/10BASE-T
Transmission rate 10 Mbps/100Mbps
Protocol TCP/IP
Supported Services FTP server,FTP client (network drive),LPR client (network
printer), SMTP client (mail transmission), Web server, DHCP,
DNS, Remote control
Connector Type RJ-45connector
Serial (RS-232) Interface (/C2 Optional) * Select USBport (PC) or RS-232
Connector type 9-pin D-Sub (plug)
Electrical specifications Conforms with EIA-574 (EIA-232 (RS-232) standard for 9-pin)
Connection type Point-to-point
Communication mode Full duplex
Synchronization method Start-stop synchronization
Baud rate Select from the following.
1200,2400,4800,9600,19200 bps
USB port(PC) (/C12 Optional) * Select USBport (PC) or RS-232
Connector Type B connector (receptacle)
Electrical and Mechanical Specifications Conforms to USB Rev.1.1
Speed Max. 12 Mbps
Number of Ports 1
Supported service Remote control
Supported Systems Models with standard USB ports that run Windows 2000 or
Windows XP with USB port as a standard. (A separate device
driver is required for connecting to a PC.)
USB port(Peripheral) (/C5 Optional)
Connector Type A connector (receptacle)
Electrical and Mechanical Specifications Conforms to USB Rev.1.1
Speed Max. 12 Mbps
Number of Ports 2
Supported keyboards 104 keyboard (US) and 109 keyboard (Japanese) conforming
to USB HID Class Ver.1.1devices
Supported USB memory devices USB (USB memory) flash memory
Power supply 5 V, 500 mA (per port)
However, device whose maximum current consumption
exceeds 100 mA cannot be connected simultaneously to the
two ports.
External I/O
I/O Section for Master/Slave Synchronization Signals
Connector type
BNC connector: Both slave and master
External Clock Input Section
Connector type
BNC connector
Input level TTL
Inputting the synchronization source as the Ext Clk of normal measurement.
Frequency range
Same as the measurement range for frequency measurement.
Input waveform 50% duty ratio square wave
Inputting the PLL source as the Ext Clk of harmonic measurement.
Frequency range
10 Hz to 2.5 kHz
Input waveform 50% duty ratio square wave
Inputting the external sampling clock (Smp Clk) of wide bandwidth harmonic measurement.
Frequency range
3000 times the frequency of 0.1 Hz to 66 Hz
Input waveform 50% duty ratio square wave
For Triggers
Minimum pulse width
1 µ s
Trigger delay time Within (1 µ s + 1 sample rate)
PC Card Interface TYPE II (Flash ATA card)
General Specifications
Warm-up time Approximately thirty minutes.
Operating temperature: 5–40 ° C
Operating humidity: 20–80% (when printer not used), 35 to 80% RH (when printer
is used)
(No condensation may be present)
Operating altitude 2000 m or less
Storage environment: -25–60 ° C (no condensation may be present)
Storage humidity: 20 to 80% RH (no condensation)
Rated supply voltage 100–240 VAC
Allowed supply voltage fluctuation range 90–264 VAC
Rated supply frequency 50/60 Hz
Allowed supply frequency fluctuation 48 to 63 Hz
Maximum power consumption 150 VA (when using built-in printer)
Weight
Approximately 15 kg (including main unit, 4 input elements,
and options)
Battery backup Setup information and internal clock are backed up with the
lithium battery
*Warning for Class A instruments
This is a Class A instrument based on Emission standards EN61326-1 and EN55011, and is
designed for an industrial environment.
Operation of this equipment in a residential area may cause radio interference, in which
case users will be responsible for any interference which they cause.