Datasheet

ENERGYMID
EM2281/EM2289/EM2381/EM2387/EM2389
Energy Meters
2 GMC-I Messtechnik GmbH
Technical Data
Measuring Ranges
Sampling rate 32 per period, continuous
LCD
Type 7-segment characters,
main display: max. 8-place, height: 5.6 mm ,
auxiliary displays 8-place, height: 5 mm
Display range 0 ... 99999999 digits
Refresh rate Approx. 6/s
Rotation / phase Blinks in case of error
Error Message Error display with background illumination
flashing red
Power Supply
Meter parameters and meter readings are retained by an
EEPROM in the event of power failure.
Power Consumption
Electrical Safety
Overload Capacity
EMC
Pulse output
By default, the energy meters are equipped with two pulse or one
bus output as standard equipment (see below). The pulse outputs
are electrically isolated from the measuring circuit by means of an
optocoupler.
Electrical Values
Connection
Type of energy can also be selected with feature V2/V4
The standard setting is active energy import (23) / export (25).
Interfaces
A complete description of the interfaces can be found on the
Internet at www.gossenmetrawatt.com.
Voltage
See order information 100 V … 500 V
Allowable deviation + 15% / - 20%
Current Direct Measurement Transformer
I
ref
5 A 1 A
Starting current 20 mA 2 mA
I
min
0.1 A 0.01 A
I
max
80 A 6 A
Frequency Range
Nominal frequency 50 Hz
Cutoff frequency 45 Hz … 65 Hz
Accuracy
Active energy Class B per DIN EN 50470-3
Reactive energy Class 2 per DIN EN 62053-23
Internal power supply From measuring voltage: 80 to 115% Ur
Voltage path, total including supply: < 2 VA
Per current path
At I
max
< 1 VA (direct)
< 0.2 VA (transformer)
At I
ref
< 0.02 VA (direct)
< 0.005 VA (transformer)
Protection class II per DIN EN 50470
Nominal insulation voltage
Inputs AC 300 V
Output Features V0, V1, V2, V7, V8, V9: DC 50 V (Bus/S∅)
Features V3, V4: AC 230 V (pulse)
Main display
Auxiliary display 1 (active power* in kW or MW)
Auxiliary display 2
(active energy* in kWh or MWh)
(e.g. IN, OUT for import or export)
(M2/M3: reactive energy or power
* EM238x transformer meter: CT and VT are taken into account
(M2/M3: reactive energy* in kVArh or MVArh)
in kVAr(h) oder MVAr(h)*)
In case of error: error code alternates with current display
Power: negative sign for export
Insulation test voltage
Input ↔
output / housing AC 4 kV
Output ↔ housing Features V0, V1, V2, V7, V8, V9: 500 V (Bus/S∅)
Features V3, V4: 4 kV (pulse)
All meters Continuous 1.15 U
r
and I
max
Direct connection 5 times 3 s: U
r
and 100 A (interval: 5 min.)
Direct connection 1 times 1 s: U
r
and 250 A, 10 ms 2400 A
Transformer connection 0.5 s: 20 x I
max
Electromagnetic compatibility per DIN EN 50470-1
Surge voltage 6 kV, 1.2/50 μs 10+/10- surges
Electrostatic discharge 15 kV (DIN EN 61000-4-2)
Electromagnetic fields 30 V / m (DIN EN 61000-4-3) open-circuit
10 V / m (DIN EN 61000-4-3) under load
Burst 4 kV/2 kV (DIN EN 61000-4-4)
Conducted interference 10 V (DIN EN 61000-4-6)
Magnetic field and line frequency 0.5 mT (DIN EN 61000-4-8)
Voltage dips (DIN EN 61000-4-11)
Interference emission EN 55022 class B
Pulse generator constants With direct connection:
1000 pulses per kWh (adjustable with V2/V4)
With transformer connection:
1000 pulses per kWh (adjustable with V2/V4)
Pulse Duration 30 ms (adjustable up to 3 s with feature V2, V4)
Interpulse period > 30 ms
U
ext
Max. 40 V (375 V with feature V3, V4)
Switching current Max. 27 mA (100 mA with feature V3, V4)
R
L
+
24
23 (25)
U
t
External 24 V DC Voltage source
Energy import
I = max. 27 mA
Max. 40 V
R
L
24
23 (25)
U
t
External AC/DC voltage source
Energy import
Max. 375 V
I = max. 100 mA
~
FeaSure
V1 / V2
Feature
V3 / V4
V7 / V8
V9
(export)
(export)