EM 6400 User Manual v03.02. – d12
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3.1.1.1.Accuracy
Table 2.5: Accuracy Table
Class 1.0 (standard) and Class 0.5 (ordering option)
Accuracy
Measurement
Class 1.0 Class 0.5
Voltage LN, per phase 1.0 0.5
Voltage LL, per phase 1.0 0.5
Voltage LN, avg 1.0 0.5
Voltage LL, avg 1.0 0.5
Amp, per phase 1.0 0.5
Amp, avg 1.0 0.5
Amp, phase angle per phase 2º 1º
Frequency 0.1 0.1
Real power, (kW) per phase & total 1.0 0.5
Reactive power, (kVAR) per phase & total 2.0 1.0
Apparent power, (kVA) per phase & total 1.0 0.5
Active energy, (kWh) import/export 1.0 0.5
Reactive energy, (kVARh) (Ind / Cap) 2.0 1.0
Apparent energy, (kVAh) 1.0 0.5
• Note 1: Additional error of 0.05 % of full scale for meter input current below 100 mA.
• Note 2: PF error limit is same as W error limit in %.
3.1.2.Auxiliary Power Supply
The meter needs a single-phase ac or dc control supply to power its internal electronics.
Auxiliary power supply range: 44 to 300V ac dc.
Burden (load) < 3 VA (auxiliary supply)
3.1.3.Front Panel Display
• Brilliant 3 lines 4 digit (digit height 14.2 mm) per line, patented high readability alpha
numeric LED display with auto scaling capability for Kilo, Mega, Giga.
• The display provides the user access to all phase Voltages (phase to neutral and phase to
phase), Currents (per phase and total), Watts, VARs, VA, Power Factor, Frequency and
kWh, kVAh and kVARh.
• The EM 6400 displays total volts, amps and frequency simultaneously.
• Load bar graph for the indication of the consumption in terms of %A avg.
• Easy setup through keys located on the faceplate for common configuration parameters.
• Password protection on setup parameters.
3.1.4.Installation & Input Ratings
• Auto-ranging voltage inputs should allow direct connection up to 347 VLN /600 VLL ac
systems (no PTs required up to 600 VLL phase to phase).
• Supports (field configurable) direct 4-Wire Star (Wye), 3-Wire Star (Wye), 3- Wire Delta
configurations and single phase via Star (Wye) Phase 1.
• 3-phase voltage and current inputs
o Volts: 48 to 347 Vac Phase–Neutral, 80 to 600 Vac Phase-Phase,
Overload – Continuous 600 VLL with full accuracy, 750 VLL Max, Hz. 50 / 60
o Amps: 20 mA to 6 A, Overload: 10 A continuous, 50 A for 3 seconds
o Field configurable for 5 A or 1 A secondary CTs
o Burden (Load): Less than 0.2 VA per Volt / Ampere input
o Frequency: 50 / 60 Hz 45 to 65 Hz