CEWE Elite 440-488 | Multi-line three-phase panel meter -Đồng hồ đa năng 3P 1-5A 0.5S RS485

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Đồng hồ đa năng CEWE Elite 440-488 | Multi-line three-phase panel meter

(3P 1-5A 0.5S RS485)

MFM with high accuracy, configurability and easy integration

Elite 440 is a multi-line three-phase digital panel meter for accurate and reliable measurement of electrical parameters (voltage, current, power, frequency, etc.) for industrial and commercial applications. It has a large multi-line backlit LCD display which enables four parameters to be displayed at the same time. Modbus communication capability allows easy integration with energy monitoring systems. Expansion modules can be fitted for enhanced system integration (pulse inputs/outputs or analogue output and ethernet).
 

Application

- Commercial and industrial sub-metering and Energy Management System (EMS) applications
- Building management and monitoring systems (BMS)
- High, medium and low-voltage switchgear panels
- Control and relay panels
- Power Control Centre (PCC) panels
- Motor Control Centre (MCC) panels
- Relaying and control outputs
- Plant automation and monitoring system (SCADA/DAS)
 

Benefits

- Easy interface with external devices through built-in Modbus (RS-485/Ethernet)
- Detachable connectors for easy installation
- Diagnostics assistance on display
- Suitable for star or delta connections and for low or highvoltage applications
- Cost-effective online monitoring
- Field-configurable CT/PT primary and secondary values using push-buttons
 

Feature

- Large four-line seven-digit display (9.7 H x 5 W mm) with quadrant identification section and bar graph for instantaneous power-level indication
- High accuracy: Class 0.2s, 0.5s, 1.0
- Average THD measurement for voltage, current and power, up to 31st harmonic
- Measurement selection (star or delta/3P4W or 3P3W)
- Modbus communication via RS-485 port/ethernet
- True root-mean squared (RMS) metering
- Calibration LED for accuracy test on site
- Wide and configurable current range 1-2A and 5-10A
- Wide-range auxiliary power supply, suitable for highvoltage or low-voltage installations
- Maximum demand recording
- Midnight snapshot (values) for selected energy registers
- Scroll-lock and 'Favourites Page' display support
- Expansion capability via add on modules for analogue outputs or pulse inputs/outputs and ethernet
- Password protection for setup mode
- Ethernet gateway module for easy integration of multiple meters connected over RS485 network

- P-N voltage
- Average P-N voltage
- P-P voltage
- Average P-P voltage
- Line current (L1, L2, L3 and average)
- Active/ reactive current
- Frequency
- Power factor
- Average power factor
- Active power
- Total active power
- Reactive power
- Total reactive power
- Apparent power
- Total apparent power
- Active total import/ export energy
- Reactive import (Q1+Q2)/ export (Q3+Q4) energy
- Apparent import/ export energy
- Cumulative MD
- Phase angle
- Power on/ off hours
- Load on/ off hours
- Feeder interruptions count (when aux is also off)
- Min/ max values
- THD votage
- THD current
- THD power
- RPM with freq and Vunb and Iunb
- Modbus on RS 485

Note:
Ethernet (add on) module is available for all Elite 440 models as single meter module or gateway
Additional modules (two pulse input & output or four analogue outputs) can be available in Elite 443 to Elite 448
# Optional software config view is available for reading and configuration
 

Connection diagram

In case of CT/PT operated meter, ensure that meter is connected on secondary side of instrument transformer.


In case of 3Ø3W, VN is replaced by V2 .


SHORT CTs BEFORE OPENING CURRENT TERMINALS
 

Mechanical dimensions

Meter without module


I/O module


Ethernet module


Meter with module
 

Technical specifications

Electrical
Connection type Voltage range:
Common product for HT3/HT4/LT4 application

Measurement voltage range
57.7 V (100V) - 240 V (415 V) AC 3 phase 4 wire (3 phase 3 wire)
Tolerance -30% to +20% of Vn

Aux power supply range
80 - 300 V AC/DC or 24 - 60 V DC (variant)

Current range
Available 1-2A and 5-10 A in single variant (field configurable)

Main frequency
50/60Hz with ±5%

Accuracy
Class 0.2s, 0.5s, 1.0

Burden
Aux burden: 3.5 VA; 8VA when all modules connected.
Current ckt burden: 1 A - 0.05VA per phase, 5 A - 0.25 VA per phase.
Voltage ckt burden: 0.15 VA per phase.

Short time over current
20 x Imax for 1 sec., 10 x Imax for 3 sec., 7 x Imax for 10 sec.

Compliance
Standards*
IEC62052-11, IEC62053-21, IEC62053-23, IEC62053-22, IEC61010, IEC62053-31

Mechanical
Dimensions (WXHXD)
96 x 96 x 65 mm (w/o module); 96 x 96 x 110 mm (with module)
Cut out size 92 x 92 mm

Weight
0.5 kg (approx)

Enclosure
FRPC

Terminals
Combicon connector

Max conductor size
2.5 mm2

Environmental
Ingress protection
IP 54 (front fascia); IP20 (at terminals)

Insulation
4 kV RMS 50 Hz, 1 minute

Impulse withstand
6 kV

Temperature
-20 °C to +60 °C (operating)
-25 °C to +80 °C (storage)

Humidity
95% non-condensing

Features
Favourite page
On/Off

CT/VT primary
Configurable in field through keypad

Communication
RS485 Modbus half duplex (default) and data will be available in floating point format (IEEE754)

Baud rate
From 1200-38400 bps (Default 9600 bps)

Load survey
40 days for 6 parameters @ 30 minutes integration period
Options for 15 or 60-minute integration period.

Modules
2 Digital pulse input and output (single module)
Input supports voltage range of 8-40VDC with pulse duration of 5 ms for input 1 and 40 ms for input 2. Output are normally open type, voltage rating of 230 V AC @ 100 mA or 48 V DC @ 100 mA with pulse width of 80 ms or 240 ms

Ethernet 1
0/100base-T for Modbus over TCP/IP communication

4 analogue outputs
Analogue output supports current range of 4-20 mA non-isolated with loop impedance
750 Ω, auxiliary supply 20-40V DC @ 100 mA