PW9100A-3
www.hioki.com/
HIOKI PW9100C961-00
PW9100A-4
AC/DC CURRENT BOX
Instruction Manual
Dec. 2021 Edition 1
PW9100C961-00 21-12H
Warranty
Malfunctions occurring under conditions of normal use in conformity
with the Instruction Manual and Product Precautionary Markings will
be repaired free of charge. This warranty is valid for a period of three
(3) years from the date of purchase. Please contact the distributor
from which you purchased the product for further information on
warranty provisions.
Troubleshooting
If the device seems to be malfunctioning, contact your authorized
Hioki distributor or reseller. Attach a description of the malfunction
when sending the device for repair.
Inspection Before Use
Check the device for any damage that may have occurred during
storage or shipping before use. If you nd any damage to the device,
please contact your authorized Hioki distributor or reseller for repair.
EN
Introduction
Thank you for choosing the Hioki PW9100A-3, PW9100A-4 AC/DC
Current Box. To ensure your ability to get the most out of this device
over the long term, please read this manual carefully and keep it
available for future reference.
Carefully read the separate document entitled “Operating
Precautions” before use.
Overview
This device measures AC and DC currents of up to 50 A with a high
degree of precision. Thanks to its excellent frequency characteristics
(amplitude and phase) and temperature characteristics (sensitivity
and oset), it can be used not only for current measurement, but
also for high-precision power measurement.
Precautions for Use
Device installation
To keep the device from becoming hot, leave at least 20 mm of
space between it and any surrounding objects.
Operating environment: See the power analyzer’s instruction
manual.
DANGER
• To prevent an electrical shock and bodily injury,
do not touch any input terminals on the VT (PT),
CT or the device when they are in operation.
• Do not use the device to measure circuits that
exceed its ratings or specications. Damage to
the device or overheating can cause bodily injury.
• To prevent an electric shock, do not remove the
device's case. The internal components of the
device carry high voltages and may become very
hot during operation.
• Connect the device to the secondary side of a
distribution panel. If a short-circuit occurs on
the secondary side of the distribution panel, the
panel will interrupt the short-circuit current. Do
not connect the device to the primary side of the
distribution panel because an unrestricted current
ow can damage the device and facilities if a
short-circuit occurs.
To prevent an electric shock, use crimp contacts
•
that cover live wires with insulation.
WARNING
To prevent an electric shock and short-circuit,
•
shut o the power to the line to be measured
before connecting the device.
• The device’s current input terminals may become
hot when measuring a large current. Exercise care
during measurement and when disconnecting
wires.
• Connect measurement lines to current input
terminals securely. If a terminal is loose, the
contact resistance will increase, resulting in
overheating, equipment burnout, or re.
This device complies with EN 61326 Class A. This device may
cause interference if used in residential areas. Such use must
be avoided unless the user takes special measures to reduce
electromagnetic emissions to prevent interference to the reception
of radio and television broadcasts.
Part Names
Front panel
Rear panel
Ax channel number
sticker here.
PW9100A-4 (4-channel model)
Current input terminals
Model
and
The rst four digits of the 9-digit
number indicate the year (its last
two digits only) and the month of
manufacture. Do not remove this
sticker as the number is important.
Output cables
The PW9100A-3 is a
3-channel model with
CH A, CH B, and CH C.
serial number
Making Measurements
Turn o the power analyzer.
1
Ax the channel number stickers corresponding to
2
the power analyzer channels.
Remove the safety covers.
3
Connect the output cables to the power analyzer’s
4
current sensor input connectors.
Connect the measurement cables to the device’s
5
current input terminals.
Reattach the safety covers.
6
To prevent contact with the current input terminals,
7
secure the output cables for channels not being
used with a tie band.
Connect the measurement cables to the
8
measurement lines.
For more information about how to connect the device, refer
to the power analyzer’s instruction manual or the [Connection]
screen. If referring to the wiring diagram for a current sensor
or current probe, change the sensor in the wiring diagram so
that the connection is as follows:
Power Analyzer
Load
When using a sensor When using the PW9100A
To ensure accurate measurement, do not connect output
cables and measurement cables in parallel.
Apply the included color labels to the output cables
9
Power supply
and wires as necessary so that channels and
connections can be identied.
Turn on the power analyzer and start measurement.
10
The device will be recognized as a 50 A rated current sensor
at each connected power analyzer channel. The voltage
must be measured in order to perform power measurement.
For more information about connections and power analyzer
settings and precautions, refer to the instruction manual for
the power analyzer being used.
LoadPower supply
Safety cover
GND
PW9100A
Connection diagram
Power Analyzer (rear of the PW8001)
Power o
1
Power on
10
Output cables
2
4
8
7
Crimp contacts
Width: 17 mm or less
Must accept M6 screw.
Insulated type
Tightening torque: 2.5 Nm to 3 Nm
Measurement cables
5
Load
Example current measurement
connection: 3P3W3M
Front
Rear
Power supply
Line A
Line B
Line C
9
3
6
Example connections when using 8 channels
Power Analyzer (rear of the PW8001)
PW9100A-4 PW9100A-4
Choosing the connection method
Example: When using the device and PW8001 (U7005) with a 1P2W
connection
Depending on the input level, the power analyzer’s instrument loss
may aect measured values. Choose the connection method that
has the lower instrument loss at the inputs connected to the load
side from the two possibilities shown below.
(1) Connecting the power
analyzer’s voltage input
terminals to the load side
Loss = (Input voltage [V])2 / 4 [MΩ]
L
Voltage-side input
Power
supply
N
Power including loss is measured
by means of the voltage input
terminal’s input resistance.
resistance
Current-side
input resistance
±
1.5 m
Ω
I
4 M
U
Load
Ω
±
(2) Connecting the device’s
current input terminals to
the load side
Loss = (Input current [A])2 × 1.5 [mΩ]
L
U
Power
supply
N
Power including loss is measured
by means of the current input
terminal’s input resistance.
Voltage-side input
resistance
4 M
Ω
Current-side
input resistance
± ±
1.5 m
Load
I
Ω
Specications
HIOKI PW9100C961-00
Accuracy
Reading (displayed value): Indicates the value displayed by the instrument. Limit values
for reading errors are expressed in percent of the reading (“% of reading” or “% rdg”).
Range: Indicates the instrument’s range. Limit values for range errors are expressed as
a percentage of the range.
Full scale (rated current): Indicates the rated current. Limit values for full-scale errors are
expressed as a percentage of full scale (“% of full scale” or “% f.s.”).
Operating
environment
Operating
temperature and
humidity range
Storage
temperature and
humidity range
Dust resistance and water resistance
Standards Safety: EN 61010
Power supply Supplied from PW8001, PW6001, PW3390, CT9555, CT9556
Interface Dedicated interface (ME15W)
Dimensions Approx. 430W
Output cable length Approx. 80 cm
Weight PW9100A-3: Approx. 3.7 kg (130.5 oz.)
Product warranty
duration
Accessories
Options CT9901 Conversion Cable
Memory function Sensor information can be read for products with memory function
Input and measurement method
Rated primary
current
Number of input
channels
Maximum input
current
Output voltage 2 V/50 A
Maximum output
voltage
Maximum rated
line-to-ground
voltage
Measurement
terminals
Input resistance
(50 Hz/60 Hz)
Input capacitance Between measurement terminals and case (secondary side), 40
Output resistance 50
Accuracy
guarantee
conditions
10
Indoor use, pollution degree 2,
altitude up to 2000 m (6562 ft.)
0
C to 40°C (32°F to 104°F)
°
80% RH or less (non-condensing)
−10
C to 50°C (14°F to 122°F)
°
80% RH or less (non-condensing)
IP20 (EN 60529)
EMC: EN 61326 Class A
or CT9557
Rated supply voltage:
Maximum rated current:
50 A/55 Hz measurement with
88H × 260D mm
(16.93″W
PW9100A-4: Approx. 4.3 kg (151.7 oz.)
3 years
Channel number stickers, colored labels (for channel identication),
Instruction Manual, and Operating Precautions (0990A907)
CT9902 Extension Cable (5 m)
support. Applicable product: PW8001
Isolated input, DCCT input
50 A AC/DC
PW9100A-3: 3 channels, PW9100A-4: 4 channels
Not exceeding derating curve (See Figure 1.)
However, a current of up to
allowable for up to 20 ms.
Approx.
1000 V (Measurement category II), 600 V (Measurement
category III), Anticipated transient overvoltage 6000 V
Terminal block (with safety cover): M6 screws
Proper torque: 2.5 Nm to 3 Nm
1.5 m
pF or less, dened at 100 kHz
×
3.46″H × 10.24″D)
×
12 V
±
or less
Ω
11 V to ±13 V (Tracking)
±
400 mA per channel or less (during
±
12 V power supply)
±
200 A peak (design value) is
±
Ω ±2 Ω
Accuracy guarantee duration: 1 year
Accuracy guarantee duration after adjustment made by Hioki:
1 year
Accuracy guarantee temperature and humidity range:
23
C (73°F ±9°F), 80% RH or less
°C ±5°
Warm-up time: at least 30 min
Sine wave inputted, connected with measuring instrument with
an input resistance of 0.9 M
line-to-ground voltage: 0 V
Accuracy guarantee range
Derating
to 1.1 MΩ
Ω
Figure 1. Frequency Derating (at 0°C to 40°C)
Measurement accuracy
Frequency
DC 0.02% + 0.007% –
DC < f < 30 Hz 0.1% + 0.02%
30 Hz ≤ f < 45 Hz 0.1% + 0.02%
45 Hz ≤ f ≤ 65 Hz 0.02% + 0.005%
65 Hz < f ≤ 500 Hz 0.1% + 0.01%
500 Hz < f ≤ 1 kHz 0.1% + 0.01%
1 kHz < f ≤ 5 kHz 0.5% + 0.02%
5 kHz < f ≤ 20 kHz 1% + 0.02%
20 kHz < f ≤ 50 kHz 1% + 0.02%
50 kHz < f ≤ 100 kHz 2% + 0.05%
100 kHz < f ≤ 300 kHz 5% + 0.05%
300 kHz < f ≤ 700 kHz 5% + 0.05%
700 kHz < f ≤ 1 MHz 10% + 0.05%
Frequency band 3.5 MHz (−3 dB Typical) –
±
• The variable f in accuracy equations is expressed in kHz.
• Amplitude accuracy and phase accuracy are dened within the accuracy
guarantee range shown in Figure 1, “Frequency Derating.” However, design
values are given for DC < f < 10 Hz.
• Add ±0.01% of reading to amplitude accuracy when input is 100% of full
scale to 110% of full scale.
• When using the CT9902 Extension Cable (5 m), add the accuracy shown in
the table below. Measurement bandwidth: 2 MHz (±3 dB typical)
• Accuracy is not dened when 2 or more CT9902 are connected together.
Frequency
DC ≤ f ≤ 10 kHz 0.015% None added
10 kHz < f ≤ 50 kHz 0.015%
50 kHz < f ≤ 300 kHz 0.015%
300 kHz < f ≤ 700 kHz 2%
700 kHz < f ≤ 1 MHz 4%
Output noise 300 μV rms or less (≤1 MHz)
Eects of
temperature
Eects of
magnetization
Common mode
rejection ratio
(CMRR)
Eects of radiated radio-frequency electromagnetic eld
Eects of external
magnetic eld
Within the range of 0
Amplitude sensitivity:
Oset voltage:
Phase:
0.01°/°C
±
5 mA or less (input equivalent, after ±
50 Hz/60 Hz: 120 dB or more
100 kHz: 120 dB or more
(Eect on output voltage / common-mode voltage)
0.5% of full scale or less at 10 V/m
10 mA or less (under a magnetic eld of 400 A/m DC or
±
400 A/m with 50 Hz/60 Hz)
Amplitude
(% of reading +% of full scale)
Amplitude
(% of reading)
±
C to 18°C or 28°C to 40°C
°
20 ppm of reading/°C
±
1 ppm of full scale/°C
±
(0.05 × f)
±
(0.06 × f)
±
(0.06 × f)
±
(0.07 × f)
±
(0.07 × f)
±
Phase
(0.02 × f)
±
(0.03 × f)
±
(0.03 × f)
±
(0.03 × f)
±
50 A is input)
Phase
±
±
±
±
±
±
Connectable products
1. PW8001 Power Analyzer
U7001 Combined accuracy
U7001 accuracy + sensor accuracy (consider sensor rating for full scale
error).
Additional components should be added to the accuracy depending on
the power analyzer and sensor specications.
U7005 Combined accuracy
Frequency
DC 0.04% + 0.037% 0.04% + 0.037%
45 Hz ≤ f ≤ 65 Hz 0.03% + 0.025% 0.03% + 0.025%
Bands other than
DC and
45 Hz ≤ f ≤ 65 Hz
• For other measurement parameters, U7005 accuracy + PW9100A
accuracy (consider sensor rating for full scale error).
• For the 1 A range or the 2 A range, add ±0.12% of full scale of the
measurement range set on the U7005.
• Additional components should be added to the accuracy depending on the
power analyzer and sensor specications.
Current Power
(% of reading + % of range)
±
U7005 accuracy + PW9100A accuracy
(Consider sensor rating for full scale error.)
0.3
°
0.1
°
0.1
°
0.12
°
0.5
°
0.5
°
±1°
°
°
°
°
°
°
°
°
°
Phase
U7005
accuracy
+
PW9100A
accuracy
2. PW6001 Power Analyzer
Combined accuracy
Frequency
DC 0.04% + 0.037% 0.04% + 0.057%
45 Hz ≤ f ≤ 65 Hz 0.04% + 0.025% 0.04% + 0.035%
Bands other than
DC and
45 Hz ≤ f ≤ 65 Hz
• For other measurement parameters, PW6001 accuracy + PW9100A
accuracy (consider sensor rating for full scale error).
• For the 1 A range or the 2 A range, add ±0.12% of full scale of the
measurement range set on the PW6001.
• Additional components should be added to the accuracy depending on the
power analyzer and sensor specications.
Current Power
(% of reading + % of full scale)
±
(full scale = PW6001 Range)
PW6001 accuracy + PW9100A accuracy
(Consider sensor rating for full scale error.)
Phase
PW6001
accuracy
+
PW9100A
accuracy
3. PW3390 Power Analyzer
Combined accuracy
Frequency
DC 0.07% + 0.077% 0.07% + 0.077%
45 Hz ≤ f ≤ 65 Hz 0.06% + 0.055% 0.06% + 0.055%
Bands other than
DC and
45 Hz ≤ f ≤ 65 Hz
• For other measurement parameters, PW3390 accuracy + PW9100A
accuracy (consider sensor rating for full scale error).
• For the 1 A range or the 2 A range, add ±0.12% of full scale of the
measurement range set on the PW3390.
• Additional components should be added to the accuracy depending on the
power analyzer and sensor specications.
Current Power
(% of reading + % of full scale)
±
(full scale = PW3390 Range)
PW3390 accuracy + PW9100A accuracy
(Consider sensor rating for full scale error.)
Phase
PW3390
accuracy
+
PW9100A
accuracy
4. CT9555, CT9556, or CT9557 Sensor Unit
Combined accuracy
• For the CT9555, use the sensor accuracy. For the CT9556/CT9557, add
0.01% of reading to the sensor accuracy (when the output coaxial cable is
±
1.6 m or less in length).
• Additional components should be added to the accuracy depending on the
connected device and sensor specications.
Phase Compensation Values
Enter the following compensation values (characteristic values)
when performing phase compensation on the PW6001 or PW3390.
300 kHz, −2.80° (PW9100A-3, PW9100A-4
The 300 kHz phase measured value noted in the test report can be
used as the phase compensation value. In theory, using this value
will allow more accurate measurement than is possible when using
the representative value.
There’s no need to enter compensation values for the PW8001 as
that instrument reads sensor information from memory and performs
compensation automatically.
To use the phase compensation function when using the CT9902,
it is necessary to obtain calibration data for the combination of the
device and the CT9902.
common)
Characteristics
Frequency characteristics (Typical)
(compensated)
CMRR (Typical)
Rack Installation
You can remove the screws from the rear of the
instrument and attach rack-mounting hardware.
The rack-mounting hardware shown at the right is
available on a special-order basis in both EIA and JIS
variants. For more information, please contact your
authorized Hioki distributor or reseller.
External dimensions
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