Installation instructions, version 1.02
IEM-DCC-500
09.27.2019
isascale@isabellenhuette.de
http://www.isabellenhuette.de
Page
of 9
IEM-DCC // HIGH-PRECISION ENERGY METER
1. Important information ................................................................................................................................ 1
2. General description / technical data .......................................................................................................... 2
3. Housing ..................................................................................................................................................... 3
4. Display ...................................................................................................................................................... 7
1. Important information
1.1. Safety instructions
The meter may be used only to measure electrical energy and must not be operated outside the
specified technical data (see rating plate).
TOUCHING LIVE PARTS CAN BE FATAL!
The corresponding fuses must therefore be removed and kept so that other persons cannot reinsert
them without being noticed. The usual safety regulations in force at the place of operation must be
observed. The meter may be installed only by appropriately trained specialist staff.
1.2. Maintenance and warranty information
The meter is maintenance-free. In the event of damage (e.g. during transport or storage), the operator
must not undertake any repairs itself.
The same will apply should a defect be attributable to other influences (e.g. lightning, water, fire, extreme
temperatures and weather conditions, improper or negligent use or treatment).
Installation instructions, version 1.02
IEM-DCC-500
09.27.2019
isascale@isabellenhuette.de
http://www.isabellenhuette.de
Page
of 9
2. General description / technical data
The IEM-DCC-500 is a direct-measurement one-directional meter with a return stop and without rating
for the measurement of energy. Based on the prototype certification issued by the Physikalisch
Technische Bundesanstalt Braunschweig, Isabellenhütte hereby declares as manufacturer of the IEM-
DCC-500 its compliance with the German law on measurement and calibration (Mess- und Eichgesetz).
In conformity with the requirements of DIN EN 50470-3, the meter satisfies the conditions for inclusion
in measurement precision class A and B in the temperature ranges stipulated therein. The range of uses
of the IEM-DCC-500 is restricted to publicly accessible DC charging stations for electric vehicles. The
basic functional characteristics and performance data are represented in the figure and the tables in the
annex:
Pursuant to DIN EN 50470, the conditions for inclusion in precision classes A/B are satisfied under the
following parameters (I
tr
= 12 A):
Parameter
Value
Current
[A]
I
st
= Starting current (start of measurement)
≤ 0.04 I
tr
0.48
I
min
= Minimum current rating (minimum value for compliance with precision class
I
min
<I<I
tr
*)
≤ 0.5 I
tr
6
I
ref
= reference current
= 10 I
tr
120
I
max
= threshold current rating (maximum value for compliance with precision
class)
≥ 50 I
tr
600
*I
tr
= transition current Value above which the precision class is maintained for I
tr
<I<I
max
Parameter
Values range
Unit
Impulse constant IR test LED
10,000
Pulses
Current rating (in operation)
500**
A
Threshold current rating
*
600**
A
Measurement voltage (in operation)
1,000**
V
Measurement voltage (max. range)
1,200**
V
Supply voltage (in operation)
10 .. 48
V
Supply voltage (max. range)
-10 .. 60
V
*
The maximum permissible temperature may not be exceeded during operation.
** Please note that the meter in question is a unidirectional energy meter with a return stop
Interface
Speed
Completion
Max. number of units
RS-485
9600 bit/s
124Ω
2
Parameter
Values range
Unit
Operating range terminal busbar IEM-DCC-500
-25° .. 105°
C
Operating range terminal customer-provided connection
max. 60°*
C
Limit for storage and transport
-40° .. 75°
C
Air humidity
max. 95
%**
Housing with terminal cover fitted
30
IP
Installation environment for IEM-DCC-500 charging station manufacturer
51
IP
Product weight IEM-DCC-500
1,420
g
* The customer-provided connection should take the form of a heat sink (can be executed using cooled charging cables).
**non-condensing, pursuant to IEC 62052-11, EN 50470-1 and IEC 60068-2-30