Data Sheet

Three-phase
Multifunction Dual tariff energy meters
Bi-directional, MID certified with M-Bus
integrated interface, single SO output and
backlit LCD display for 3 or 4 wire systems
Type 7E.78.8.400.0312
Direct connection up to 80A, dual tariff
Type 7E.86.8.400.0312
6A direct connection, up to 50 000 A using
current transformer, dual tariff
• Display of total or partial (resettable) energy
consumption: kWh, kVAh or kvarh - for both T1
and T2 tariffs - for the total system or per phase
• Scroll to view the following instantaneous
values: V, A, PF, kW, kVA, kvar, Hz and direction
of power flow
• Fault indication in the event of loss or incorrect
phase sequence
• 8 digit backlit LCD display
• M-Bus integrated communications port
• Programmable*** SO pulse output for remote
energy monitoring according to EN62053-31
• Active power accuracy Class B according to
EN50470-3
• Reactive power accuracy Class 2 according to
EN62053-23
• Protection category II
• Accessories: sealable tamperproof terminal cover
• 35mm rail (EN60715) mount
* Minimum CT ratio: 1:1
Maximum CT ratio: 10 000:1
CT secondary programmable: 1 or 5A
** Default transmission baud rate: 2400 bps
*** SO output can be associate with kWh, kVAh or
kvarh.
7E.78.8.400.0312 7E.86.8.400.0312
• Reference current 5A (80A Maximum)
• M-Bus integrated interface
• Three-phase systems programmable 3 or 4 wire
• Dual tariff
• MID certified
• Reference current 1A (6A Maximum)
• M-Bus integrated interface
• Three-phase systems programmable 3 or 4 wire
• Usable with current transformer*
• Programmable CT secondary*
• Dual tariff
• MID certified
R
T1,T2
=Tariff switching equipment
3 x 230/400 V
AC 50/60 Hz
SO
M-Bus
+24V
R
T1,T2
=Tariff switching equipment
3 x 230/400 V
AC 50/60 Hz
M-Bus
SO
+24V
For outline drawing see page 16
Specification
Reference/Maximum current I
n
/I
max
A 5/80 1/6
Starting current I
st
A 0.02 0.002
Minimum measured current I
min
A 0.25 0.01
Current range (within accuracy class) A 0.5…80 0.05…6
Maximum peak current A 2400 (10ms) 120 (500ms)
Supply (& monitored) voltage U
N
VAC 3 x 230/400…3 x 240/415 3 x 230/400…3 x 240/415
Operating range (0.8…1.2)U
N
(0.8…1.2)U
N
Frequency Hz 50/60 50/60
Power consumption per phase W/VA ≤0.5/7.5 ≤0.5/7.5
CT burden (per phase) VA — 0.04
Display Eight digit counter - backlit LCD display
Max. totalising count/Min. increment kWh 999999.99/0.01 999 999.99/0.01
LED pulses per kWh 1000 10 000
LED pulse length ms 10±0.5 10±0.5
M-bus technical data
Bus system M-Bus M-Bus
Conforms to standard EN13757-1-2-3 EN13757-1-2-3
Baud rate** Baud 300…9600 300…9600
Output specification (SO+/SO–)
Number/Type 1 opto-isolated output 1 opto-isolated output
Voltage range/Maximum current
(conforming to EN62053-31) VDC/mA 3.3…27/1…27 3.3…27/1…27
Pulses per kWh*** Imp/kWh*** 100 See table page 13
Pulse length ms 50 ± 2 50 ± 2
Tariff input - opto-isolated
Voltage range VAC/DC 80…275 80…275
Technical data
Accuracy class B B
Ambient temperature (Within accuracy class) °C –25…+55 –25…+55
Protective class II II
Protection category: Housing/terminals IP50/IP20 IP50/IP20
Approvals (according to type)
V-2018, www.findernet.com
10
E
7E SERIES
Energy meters
7E
SERIES