Data Sheet

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Specification are subject to change without notice GNM3T

DS 221018

• Three phase energy meter

• Class B (kWh) according to EN50470-3

• Accuracy ±0.5% RDG (current/voltage)

• Current measurement via CT

• Backlit LCD display (3x 8-digit) with integrated touch

key-pad

• Energy readout on display: 8 digit

• Variable readout on display: 4 digit

•

Energy measurement: kWh and kvarh;

kWh+ by 2 tariffs; kWh per phase

• System variables: kW, kvar, kVA, VLL, VLN, PF, Hz,

kWdmd, kWdmd peak

• Phase variables: kW, kvar, kVA, VLL, VLN, A, PF

• Auxiliary power supply

• Dimensions: 3-DIN module

• Protection degree (front): IP51

•

Pulse output (GNM3T)

•

RS485 Modbus port (GNM3T-RS485)

•

M-bus port (GNM3T-MBUS)

• Run hour meter

• Neutral current calculation

Product description

Three-phase energy meter with backlit LCD display with integrated touch keypad. Particularly indicated for active

energy metering and for cost allocation (CT connection), with dual tariff management availability. It measures imported

energy (consumption). Housing for DIN-rail mounting, with IP51 front degree protection. The meter is optionally provided

with pulse output

proportional to the active energy being measured, RS485 Modbus port or M-bus port. Available for legal

metrology.

• Digital input (for tariff management

•

Certified according to MID Directive

Energy Management

Energy Meter

Type GNM3T, GNM3T-RS485, GNM3T-MBUS

How to order:

Certified according to MID Directive, Module "B" and Module "D" of Annex II, for legal metrology relevant to

active electrical energy meters (see Annex V, MI003, of MID). Can be used for fiscal (legal) metrology.

Range code

400 VLL AC - 5(6)A

(CT connection)

Power supply

H: auxiliary power sup-

ply 90 to 260V ac/dc

System

3-phase, 3 or 4 wire

MID

GNM3T: Pulse output

GNM3T-RS485: RS485 port

GNM3T-MBUS: M-bus port

Summary of content (9 pages)

PAGE 1
Energy Management Energy Meter Type GNM3T, GNM3T-RS485, GNM3T-MBUS • Three phase energy meter • Class B (kWh) according to EN50470-3 • Accuracy ±0.
PAGE 2
GNM3T Input specifications Rated Inputs Current type Current range Nominal voltage Max CTxVT Accuracy Current Phase-neutral voltage Phase-phase voltage Frequency Active power Power factor Reactive power Energies Active energy Reactive energy Start-up current: Start-up voltage Resolution Current Voltage Power Frequency PF Energies (positive) Energies (negative) Energy additional errors Influence quantities Temperature drift Sampling rate 3-phase loads, CT conn
PAGE 3
GNM3T Digital input specifications Digital inputs Function Free of voltage contact Tariff management (switch between t1-t2) Number of inputs 1 Contact measurement voltage 5 V Input impedance 1kohm Contact resistance ≤1kohm, close contact ≥100kohm, open contact Overload In case a voltage is erroneously applied to the digital input, the input is not damaged up to 30 V ac/dc.
PAGE 4
GNM3T General specifications Operating temperature -25 to +55 °C (-13 to 131° F), indoor, (R.H. from 0 to 90% noncondensing @ 40°C) Storage temperature -30°C to +80°C (-22 to 176° F) (R.H. < 90% non condensing @ 40°C) Overvoltage category Cat.
PAGE 5
GNM3T Power supply specifications Auxiliary power supply H: 90 to 260 V ac/dc Power consumption ≤ 1W, ≤ 10VA Insulation (for 1 minute) between inputs and outputs Measuring input Digital or serial output Digital input - 4 kV 4 kV Measuring input Digital or serial output 4 kV - 0 kV Digital input 4 kV 0 kV - Accuracy (according to EN50470-3 and EN62053-23) kWh, accuracy (RDG) depending on the current kvarh, accuracy (RDG) depending on the current Percentage error limits for class index B
PAGE 6
GNM3T Display pages 1st row 2nd row 3rd row “Full” mode “Easy” mode kWh+ (imported) kW system X X kWh+ (imported) V L-L system X X kWh+ (imported) V L-N system X X kWh+ (imported) PF system X kWh+ (imported) Hz X kvarh+ (imported) Kvar system X kWh+ (imported) kVA system X Note X kWh+ (imported) kWdmd peak kWdmd X kWh (t1) “t1” kW system X X Only relevant to kWh+, with Tariff menu set to ON.
PAGE 7
GNM3T Additional available information on the display Page Display Description Info 1 YEAr (2018) Year of production Info 2 SErIAL n (dddnnnA) Serial number (ddd= day of the year; nnn=progressive number; A= production line, internal use only) Info 3 rEVISIon (A.
PAGE 8
GNM3T Wiring diagrams Fig.1 3-ph, 4-wire, unbalanced load 3-ph, 3-wire, unbalanced load 1 2 3 1 2 3 N 4 5 6 7 8 9 3-CT connection Fig.3 Power supply Digital Input Fig.2 4 5 6 7 8 9 3-CT connection Fig.4 Pulse output Fig.5 Pulse output Fig.6 N/L/+ RS485 Modbus communication port Fig.7 M-Bus communication port Fig.8 Additional instruments with RS485 are connected in parallel. The serial output must only be terminated on the last network device connecting terminals A- and T.
PAGE 9
GNM3T Front panel description 1. Display Backlit LCD display with touch key-pad. 2. LED LED proportional to kWh reading 3. Serial number Area reserved to serial number and MID-relevant data GNM3T 4 1 3 M16 0120 2 3x230/400V 0.