Table of Contents
Advertisement
EMH metering
GmbH & Co. KG
Neu-Galliner Weg 1 • 19258 Gallin
GERMANY
Tel.
+49 38851 326-0
Fax
+49 38851 326-1129
Email info@emh-metering.com
Web
www.emh-metering.com
Tel.
+49 38851 326-1930 (Technical Support)
Email support@emh-metering.com
NXT4
Polyphase meter for commercial, industrial and
extended domestic applications
EN
Instructions for use
Scope of delivery ............................................................................................... 2
Important information......................................................................................... 2
Target group .................................................................................................. 2
Intended use.................................................................................................. 2
Maintenance and warranty instructions ......................................................... 3
Care and disposal information....................................................................... 3
Basic safety instructions ................................................................................ 4
General description ........................................................................................... 4
Technical data.................................................................................................... 5
Housing, display and control elements .............................................................. 6
Name plate .................................................................................................... 7
LC display ...................................................................................................... 8
Installation and start-up ................................................................................... 10
Mounting the meter ..................................................................................... 10
Connecting the meter .................................................................................. 12
Terminal blocks ............................................................................................ 14
Readout battery (accessory) ....................................................................... 19
Terminal cover ............................................................................................. 19
Abbreviations ................................................................................................... 20
EU Declaration of Conformity .......................................................................... 22
Version: November 2020; Subject to technical changes
NXT4-BIA-E-1.81
Advertisement
Table of Contents
Related Manuals for EMH metering NXT4
Summary of Contents for EMH metering NXT4
-
Page 1: Table Of Contents
EMH metering GmbH & Co. KG Neu-Galliner Weg 1 • 19258 Gallin GERMANY Tel. +49 38851 326-0 +49 38851 326-1129 Email info@emh-metering.com www.emh-metering.com Tel. +49 38851 326-1930 (Technical Support) Email support@emh-metering.com NXT4 Polyphase meter for commercial, industrial and extended domestic applications Instructions for use Scope of delivery .................... -
Page 2: Scope Of Delivery
Scope of delivery Please check the contents of the packing box are complete before starting with the installation and start-up procedure. y 1 NXT4 device y 1 Instructions for use y Accessory (optional): • Readout battery • Path separator If the contents are incomplete or damaged, please contact your supplier. -
Page 3: Maintenance And Warranty Instructions
Maintenance and warranty instructions The device requires zero maintenance. It is not permitted to make any repairs in the event of any damage (e.g. due to transport, storage). If the device is opened, the warranty will be rendered null and void. The same applies where a defect is caused by external factors (e.g. -
Page 4: Basic Safety Instructions
Basic safety instructions Please adhere to the following basic safety instructions: y Read all the enclosed instructions and information. y Observe the warnings on the device and in the documents. y Always be aware of safety issues and hazards when working on the device. -
Page 5: Technical Data
Technical data Voltage, current, frequen- See name plate cy, utilisation category Overvoltage category OVC III (as per EN 62052-31) Rated peak withstand 4 kV (as per EN 62052-31) voltage Input System voltage 58...277 V, 2 each Output Optocoupler MOSFET 58... 240 V AC/DC, 0.1 A Relay 58... -
Page 6: Housing, Display And Control Elements
Housing, display and control elements 1 - Meter cover sealing screw 2 - Reset button, sealable 3 - Call-up button 4 - Optical data interface D0, optical call-up button, left 5 - Test LEDs 6 - Space for transformer plate (for transformer connected meters only) 7 - Terminal cover, sealable 8 - Terminal cover sealing screw 9 - Meter cover, sealable... -
Page 7: Name Plate
Name plate 1 - Registered quadrants 2 - Overvoltage category 3 - Accuracy class 4 - Utilisation category 5 - Recess for test LEDs 6 - Product standard 7 - Assignment of inputs and outputs, interfaces 8 - Information about connection to meter, connection diagram 9 - Temperature class as per EN 60721-3-3 10 - Conformity and certification marking 11 - Safety and application information... -
Page 8: Lc Display
LC display 1. The operation display shows the energy direction that is currently being measured by the meter (supply/draw of active power, inductive/capacitive reactive power). If a load current is flowing through the meter, the energy direction arrow indicates which quadrant is being used for the measurement, e.g.: 1st quadrant +P/+Q 3rd quadrant –P/–Q... - Page 9 6. The additional cursor field displays the operating states for the meter. The arrows indicate whether any manipulation or an installation error was registered or if the power threshold was exceeded. The cursor is active where any manipulation of the terminal cover, meter cover or any magnetic influence is registered.
-
Page 10: Installation And Start-Up
Installation and start-up The meter can be wall-mounted as per DIN 43857-2. The following figures show the relevant dimensions for mounting the meter, depending on the model involved. Mounting the meter a) Meter with short terminal cover Dimensions in mm... - Page 11 b) Meter with long terminal cover Dimensions in mm c) Meter with VARIOMOD NXT meter modem Dimensions in mm...
-
Page 12: Connecting The Meter
Connecting the meter DANGER! Risk of fatal injury in case of contact with live parts! During installation or when replacing the meter, the wires connected to the meter must be de-energised. y Remove the corresponding pre-fuses and store them in a secure location to ensure that no-one else can insert the pre-fuses again without being noticed. - Page 13 DANGER! Risk of fatal injury due to arcing and electric shock! The inputs and outputs for the additional terminal, including the external power supply inputs, are not fuse-protected in the meter. y The inputs/external power supply inputs must be fuse-protected with a pre-fuse of ≤...
-
Page 14: Terminal Blocks
Terminal blocks a) Transformer connected meter DANGER! Risk of fatal injury in case of contact with live parts! y The electrician is responsible for coordination of the rating and line-side properties of the overcurrent protection devices with the maximum rated current. y The transformer connected meter must be fuse-protected in a voltage circuit using a pre-fuse with <... - Page 15 Transformer Main connection Additional connected meters terminals terminals 1, 2, 3, 4, 5, 6, 7, 8, 9, 11 Terminal dimensions 5.3 x 5.5 2.6 x 2.2 W x H (mm) Minimum connection cross sections (mm²) Maximum connection 10.0 cross sections (mm²) Maximum torques (Nm) Screw type Screw with washer...
- Page 16 b) Meter for direct connection at 120 A DANGER! Improper installation endangers life and health, and can lead to malfunctions and material damage! y Use an overcurrent protection device rated for a maximum of 120 A as per the applicable Technical Connection Rules for Power Instal- lations (e.g.
- Page 17 c) Meter for direct connection at 100 A (with 3-phase cut-off device) DANGER! Improper installation endangers life and health, and can lead to malfunctions and material damage! y Use an overcurrent protection device rated for a maximum of 100 A as per the applicable Technical Connection Rules for Power Instal- lations (e.g.
- Page 18 Meter with direct Main connection Additional connection up to 100 A terminals terminals (with 3-phase cut-off 1, 3, 4, 6, 7, 9, 10, 12 device) Terminal dimensions 9.8 x 10.0 2.6 x 2.2 W x H (mm) Minimum connection cross sections (mm²) Maximum connection 35.0 cross sections (mm²)
-
Page 19: Readout Battery (Accessory)
Remove the path separator again when resuming normal operation! Readout battery (accessory) The battery compartment is located in the sealable terminal cover. It can be fitted with a lithium battery (CR 2450, 3 V), which can be replaced when required. CAUTION! Risk of explosion if replaceable battery is not replaced properly! The replaceable battery may only be inserted or removed by qualified... -
Page 20: Abbreviations
Abbreviations Optical interface as per EN 62056-21 Deutsches Institut für Normung e.V. (German Standardisation Institute) European Norm International Electrotechnical Commission Ingress Protection Liquid Crystal Light Emitting Diode OBIS Object Identification System Active power Positive active power (power drawn by customer) Negative active power (power supplied by customer) Reactive power Positive reactive power... -
Page 22: Eu Declaration Of Conformity
EU Declaration of Conformity The current EU Declaration of Conformity is available on the Internet site www.emh-metering.com in the “Products” area for the meter’s product description.
Need help?
Do you have a question about the NXT4 and is the answer not in the manual?
Questions and answers