User's Manual
1750
Operators Manual
52
Reactive Power
Accuracy............................................................± 0.2% reading ± 0.1% full scale + current sensor accuracy
Power Factor
Measurement Range..........................................-1.000 (leading) to 0.000 to +1.000 (lagging)
Measurement Accuracy......................................± 1 digit from the calculation of each measured value (±3 digits for
total)
Displacement Power Factor
Measurement Method ........................................Calculated from the phase difference between voltage fundamental
and current fundamental
Measurement Range..........................................- 1.000 (leading) to 0.000 to + 1.000 (lagging)
Measurement Accuracy......................................± 0.5% reading ± 2% full scale ± 1 digit
Voltage Unbalance and Phase Sequence
Measurement Method ........................................Positive sequence voltage divided by negative sequence voltage, per
IEC 61000-4-30
Harmonic Voltage and Current
Analysis Window................................................rectangular
Analysis Order ...................................................1st to 50th order
Measurement Accuracy......................................Voltage / Current: 1st to 20th orders: ± 0.5% reading ± 0.2% full scale
21st to 50th orders: ± 1% reading ± 0.3% full scale
(current sensor accuracy must be included for current and power)
Measurement Method ........................................IEC 61000-4-7
Inter-harmonic Voltage and Current (Intermediate Harmonics)
Analysis Window................................................rectangular
Analysis Orders..................................................0.5 to 49.5th order
Measurement Method ........................................IEC 61000-4-7
External Interface Specifications
LAN Interface
Connector ..........................................................RJ-45
Speed and Type.................................................10/100Base-T, auto MDIX
Communications Protocol ..................................TCP/IP over Ethernet
Wireless Controller Interface
Connection.........................................................wireless (2.4 GHz radio)
Speed ................................................................up to 700 kbit/second
Communications Protocol ..................................Bluetooth SPP
Environmental and Safety Specifications
Operating Environment ......................................indoors or in covered area outdoors, up to 2000 m altitude
Storage Temperature and Humidity....................-20 °C to 50 °C, 80 % rh max, non-condensing
Operating Temperature and Humidity ................0 °C to 40 °C, 80 % rh max, non-condensing
Maximum Rated Working Voltage
Voltage Terminals ............................................1100 V rms
Voltage Durability...............................................5550 V rms ac for 1 minute, between voltage input terminals, voltage
input terminals and current probes, and voltage input terminals and
case (50/60 Hz, 1 mA sense current)
Enclosure Protection..........................................IP30 (per EN 60529)
Standards Conformance
EMC...................................................................EN 61326-1:1997+A1:1998 Class A
EN 61000-3-2:1995+A1:1998+A2:1998
EN 61000-3-3:1995
Safety ................................................................EN 61010-1:1993+A2:1995
Voltage input unit: Contamination Level 2
Overvoltage Category 1000 V CAT III, 600 V CAT IV (anticipated
overvoltage: 8000 V)