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Power Quality Measurement Standards |
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Conformance
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IEC 61999-1-4 Class 1, IEC
61000-4-30 Class A or B depending on measurement function,
IEEE519, IEEE1159, IEEE1459 |
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Clock/calendar |
Leap years, 24-hour clock |
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Real-time clock accuracy |
not more than ±1 sec/day |
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Internal memory capacity
for data |
at least 1 GB |
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Maximum recording period |
at least 31 days |
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Measurement time control |
automatic |
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Maximum number of events |
limited only by the size of
the internal memory |
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Power requirements |
100V to 240V rms ±10%,
47-63Hz, 40W |
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Operating time during
interruptions (internal UPS operation) |
5 minutes per interruption, 60
minutes total operating time without recharging |
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Dimensions |
215mm x 310mm x 35mm (8.5" x
12.2" x 3.5") |
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weight |
6.3kg (14lb) |
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Input |
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Measurement types
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One Phase plus
Neutral, One Phase IT No Neutral, One Phase Split Phase,
Three Phase Wye, Three Phase Delta, Three Phase IT, Three
Phase High Leg, Three Phase Open Leg, 2 Element Delta,
21/2 Element Wye. |
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Voltage Input channels |
4 AC/DC |
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Current Input channels |
5 channels |
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Voltage
channels
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Input resistance: 2MΩ
Input capacitance: <20pF |
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Current
input characteristics
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2V rms= full scale, 1MΩ
input impedance for ferro CT's, low impedance for
Flexi-CT's |
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Measuring
method
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Simultaneous
digital sampling of voltage and current. Digital PLL
synchronized sampling, internal frequency references used
during voltage drops. |
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Synchronization and Sampling |
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PLL
synchronization source
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The PLL synchronizes to the
A-N voltage for Wye power types, and to the A-B voltage
for Delta power types. All listed power types can be
characterized as either Wye or Delta. |
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PLL lock range |
42.5 to 69Hz |
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Sampling
frequency
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Voltage and
current: 2.56 samples/cycle inter-harmonics per
IEC61000-4-7: 2 560points/10 cycles (50Hz), 3072 points/12
cycles (60Hz) Transient Voltage: 5MHz |
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A/D resolution:
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Voltage and current: 24 bits
Transient voltage: 14 bits |
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Voltage and Current Measurements |
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AC voltage range |
1000V rms ±10% over range |
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DC voltage range |
±1000V rms +10% over range |
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Voltage crest factor |
3 or less |
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Current measurement range |
Depends on current probe used |
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Current crest factor |
4 or less |
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RMS Voltage Measurement |
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Measurement type
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True rms
calculated continuously: every cycle, every 1/2 cycle, and
every 10 or 12 cycles at 50 or 60Hz respectively, as
required by IEC 61000-4-30. |
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Measurement uncertainty
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AC: ±0.2% of reading ±0.1% of
full scale, above 50V rms.
DC: ±0.5% of reading ±0.2% of full scale, above 50V dc. |
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RMS Current Measurement |
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Measurement type
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True rms
calculated continuously: every cycle, every 1/2 cycle, and
every 10 or 12 cycles at 50 or 60Hz respectively, as
required by standards. |
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Transient Voltage (Impulse) |
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Measurement type |
Waveshape sampling |
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Full scale |
8000 Volts peak |
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Sample resolution |
200nS |
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Measurement uncertainty
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±5% of reading ±20 V (test
parameters: 1000 V DC,
1000V rms, 100 kHz) |
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Voltage Swells (RMS swell) |
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Measurement type
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True rms (one
cycle calculation by overlapping each half cycle - voltage
between lines is measured for 3P3W lines and phase voltage
is measured for 3P4W lines). |
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Displayed data |
Amplitude and duration of
swell |
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Measurement |
Same as rms voltage |
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Voltage Dip (RMS sag) |
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Measurement type
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True rms (one
cycle calculation by overlapping each half cycle - voltage
between lines is measured for 3P3W lines and phase voltage
is measured for 3P4W lines). |
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Displayed data |
Amplitude and duration of dip
or interruption |
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Measurement |
Same as rms voltage |
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Voltage Dropout (interruption) |
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Measurement type |
Same as voltage dip |
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LAN Interface |
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Connector |
RJ-45 |
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Speed and type |
10/100 Base-T, auto MDIX |
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Communications protocol |
TCP/IP over Ethernet |
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Wireless Controller Interface |
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Connection |
wireless (2.4 GHz radio) |
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Speed |
up to 700 kbit/second |
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Communication protocol |
Bluetooth SPP |
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Power Measurement |
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Measurement type
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True rms calculated
continuously: every cycle, and every 10 or 12 cycles at 50
or 60Hz respectively, as required by standards. |
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Frequency Measurement |
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Measurement range |
42.5 to 69 Hz |
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Measurement source |
Same as PLL synchronization
source |
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Measurement accuracy |
±10MHz (10 to 110% of range,
with sine wave). |
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Power Factor |
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Measurement range |
0.000 to 1.000 |
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Measure accuracy |
±1 digit from the calculation
of each measured value (±3 digits for total) |
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Displacement Power Factor |
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Measurement method
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Calculated from the phase
difference between voltage fundamental and current
fundamental |
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Measurement range |
-1000 (leading) to +1000
(lagging) |
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Measurement accuracy |
±0.5% of reading ±2% of full
scale ±1 digit |
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Voltage Unbalance and Phase Sequence |
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Measurement method
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Positive sequence voltage
divided by negative sequence voltage, per IEC 61000-4-30 |
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Harmonic Voltage and Current |
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Analysis window |
Rectangular |
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Analysis order |
1st to 50th order |
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Measurement accuracy |
Voltage/Current 1st to 0th orders: ±0.5% of reading ±0.2%
of full scale, 2nd 1st to 50th orders: ±1% of reading
±0.3% of full scale (current sensor accuracy must be
included for current and power) |
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Measurement method |
IEC 61000-4-7 |
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Inter-harmonic Voltage and Current
(intermediate harmonics) |
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Analysis window |
Rectangular |
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Analysis orders |
1.5 to 49.5th order |
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Measurement method |
IEC 61000-4-7 |
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Environmental Specifications |
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Operating environment |
Indoors or in covered area
outdoors, up to 2000m altitude |
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Storage temperature |
-20°C
to 50°C |
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Operating temperature |
0°C
to 40°C |
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Humidity |
80% RH maximum non-condensing |
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Electrical Safety |
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EMC
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EN 61326-1: 1997+A1: 1998
Class A
EN 61000-3-2: 1995+A2: 1998
EN 61000-3-3: 1995 |
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Safety
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EN 61010-1-2nd
Edition: 2000
Voltage input unit: Contamination Level 2, Overvoltage
Category 1000V CAT III, 600V CAT IV (anticipated
overvoltage: 8000V) |
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Maximum Rated Working Voltage |
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Voltage terminals |
1100 volts rms |
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Voltage durability |
5550 Vrms AC
for 1 minute, between voltage input terminals, voltage
input terminals and current probes, and voltage input
terminals and case (50/60Hz, 1mA sense current). |
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Enclosure protection |
IP30 (per EN60529 |
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