janitza UMG96L User manual

Peak value Minimum value
L1-N / L1-L2
L2-N / L2-L3
L3-N / L3-L1
Programming mode
Sum measurement
Phase to phase
Password
Voltage transformer
Current transformer
Key 1 Key 2
Mean value
Supply
Dok Nr. 1.031.015.7
Universal Measuring Device
UMG96L
Operating Instructions
Brief instructions see last page

Page 2
All rights reserved. No part of this manual may
be reproduced or duplicated without the written
permission of the author. Any contraventions
are punishable and will be prosecuted with all
legal means.
No liability can be taken for the faultless condi-
tion of the manual or damage caused by the
use of it. As failures cannot be avoided com-
pletely, we shall be very grateful for any advice.
We are anxious to remove all failures as soon
as possible. The mentioned software and hard-
ware descriptions are registered trademarks in
the most cases and are subject to the regula-
tions by law.All registered trademarks are prop-
erty of the corresponding companies and are
fully recognized by us.
Issue Note
13.01.04 First Edition.
15.04.04 Measurement uncertainly.
27.03.06 Page 10/12 marking voltage
measurement.
11.01.07 Page 9, Abb.5, 6 and 8 been
cancelled.
12.04.07 Storage temperature -25°C.
Table of contents
The meaning of symbols 3
Hints for the user 3
Receipt control 3
Contents of delivery 3
Hints for maintenance 4
Service 4
Product description 5
Intended use 5
Functional description 5
Installation 6
Mounting place 6
Measuring and operating voltage 6
Current measurement 7
Sum current measurement 7
Connecting options 8
Putting into service 10
Installation 10
Attach measuring and operating voltage 10
Connect measuring current 11
Check phase assignment 11
Check current direction 11
Check measurement 11
Check phase power 11
Check sum power 11
Elimination of errors 12
Error messages 13
Usage and indication 14
Indication mode 14
Programming mode 14
Key functions 15
Table, measured value indication 16
Current transformer 18
Voltage transformer 19
Averaging times 20
Measured value indication 21
Measured value rotation time 21
Measured value selection 22
Delete minimum and maximum values 23
Delete energy 23
Working hours counter 24
LCD contrast 24
Software Release 25
User password 25
Uncertainty of measurement 26
Configuration data 28
Declaration of conformity 29
Safety guidelines 29
Test voltage 29
EMC requirements 29
Technical data 30
Ambient conditions 30
Measurement 30
Connectable cables 30
Dimensions 31
Connection example 31
Brief instructions 32
Change current transformer ratio 32
Call up measured values 32

Page 3

Beware of dangerous electrical voltage.
This symbol shall warn you about possi-
ble danger, which can occur during instal-
lation, putting into service and usage.
The meaning of symbols
The symbols, which are used in this manual,
have the following meaning:
Ꮨ
Hints for the user
This device may be inserted and used by quali-
fied personnel only according to the safety
regulations. Please follow the legal and safety
regulations for the corresponding application
while using the device.
Qualified personnel are persons, who are famil-
iar with installation, mounting, putting into serv-
ice and operation of the product and have quali-
fications according to their occupation, for ex-
ample:
- Education or instruction resp. the right to
switch on or off, ground or characterize current
circuits or devices according to the standards
of safety techniques.
- Education or instruction in care and use of
safety equipment according to the standard
safety techniques.
Attention!
If the device is not used according to this
manual, a safe use cannot be granted,
and the instrument might cause danger.
ᏘAttention!
If a UMG 96L is installed in panels of
metal, the panel must be earthed.
Receipt control
In order to ensure a perfect and safe use of the
device, a proper transport, expert storage, erec-
tion and mounting and careful usage and main-
tenance is required. In case that a safe opera-
tion can no longer be granted, the device has
to be put out of service and has to be protected
against unintentional putting into service.
A safe operation can no longer be assumed, if
the device
• shows visible damage,
• does not work in spite of intact net supply,
• has been exposed to disadvantageous condi-
tions for a longer time (e.g. storage beyond al-
lowed climate without adaption to the room cli-
mate, dew etc.) or transport use (e.g. falling
from great height, even without visible dam-
age).
Please test the contents of delivery for comple-
tion, before starting the installation of the de-
vice.
Contents of delivery
1 pc. UMG96L,
2 pcs. fixing brackets,
1 pc. manual.
As an option, a seal with part no. 29.01.907 can
be delivered.
All delivered options and versions are listed on
the delivery papers.
This manual also describes options,
which have not been delivered and do
not belong to the contents of delivery.


Page 4
Service
If there are questions, which are not described
in this manual, please contact us directly.
For an efficient handling we need the following
information:
- Description of device (see type plate),
- Serial digit (see type plate),
- Software Release,
- Measuring and operating voltage and
- detailed description of error.
Hints for maintenance
Before delivery the device is tested in various
safety checks and marked with a seal. If the
device is opened, these checks must be re-
peated.
For instruments, which are opened outside the
manufacturing works, no warranty is granted
whatsoever.
Repairing and calibration
Repairing and calibration work can be carried
out in the manufacturing works only.
Front foil
The cleaning of the front foil has to be effected
with a soft cloth using a common cleansing
agent. Acid or acidic agents are not allowed for
cleaning.
Waste management
The UMG96L can be disposed and recycled as
electronical waste according to the legal regu-
lations.

Page 5
Functional description
The electronical three phase measurement
system determines and digitalizes the effective
values of voltages and currents in 50/60 Hz net-
works.
The operating voltage for operation of UMG96L
is generated by the measuring voltage L1-N. A
random test measurement is carried out each
second at all current and voltage inputs. Meas-
uring signal interruptions, which last longer than
one second are safely recognized.
For each random test one period is scanned.
From those sampled values the microproces-
sor calculates the electric quantities. These
measured values are indicated within the pro-
grammable display. The energy as well as the
minimum and maximum values are stored
every 15 minutes whereas the programmed
data are stored immedately is a none volatile
memory (EEPROM).
The scanning frequency for all measuring in-
puts is calculated from the net frequency of
phase 1. At a net frequency of 50Hz the scan-
ning frequency is 2,5kHz and for 60Hz it is
3,0kHz.
Diagr. Generation of the operating voltage from
measurement voltage.
Product description
Intended use
The UMG96L is suitable for fix mounting and
the measurement of voltage, current, power
etc. in low voltage switchgear. The measure-
ment is designed for 3 phase systems with neu-
tral conductor (TN and TT-mains).
The UMG96L is suitable for mounting in fix and
weather protected panels. Conducting panels
must be earthed.
Due to the high resistance against interference,
the UMG 96L is suitable for continous and un-
supervised operation.
As the UMG96L receives its power from phase
L1 of the measuring voltage, at least phase L1
and the neutral conductor N must be con-
nected.
The attached voltage must be within the range
of the measuring and operation voltage shown
on type plate.
Either ../5A or ../1A current transformers can be
connected to the current measuring inputs.
The connection of the measuring and operat-
ing voltage is carried out on the back side of
the UMG96L via all-insulated spring power
clamps.
The measuring and operating voltages must be
connected to the UMG 96L via a separation
(switch or power switch) and an overcurrent
protection fuse (2-10A) in the building installa-
tion. The separation (switch or power switch)
must be near the UMG 96L and easily accessi-
ble.
UMG96L
Generation of oper-
ating voltage
L2
L3
N
L1
PE
Voltage measurement
3M
3M
3M

Page 6
Installation
Mounting place
The UMG96L is suitable for a fix insertion into
low and medium voltage switchgear. Any
mounting position is possible.
Measuring and operating voltage
The operating voltage of the UMG96L is gener-
ated by the measuring voltage. The measure-
ment is designed for three phase systems with
neutral conductor (TN and TT mains). The
measuring and operating voltages must be con-
nected to the UMG 96L via a separation (switch
or power switch) and an overcurrent protection
(2-10A) within the building installation.The con-
nection of the measuring and operating
voltages is carried out at the back side of the
UMG 96L via shock protected spring clamps.
230V/400V Standard version
Phase L1 and the neutral conductor N must be
connected, and the attached voltage must be
within the range of the measuring and operat-
ing voltage.
120V/220V Special version
Phase L1 and the neutral conductor N must be
connected, and the attached voltage must be
within the range of the measuring and operat-
ing voltage.
60V/110V Special version
Phase L1 and the neutral conductor N must be
connected, and the attached voltage must be
within the range of the measuring and operat-
ing voltage.
Attention!
Before the device is connected to volta-
ge for the first time, it should be depos-
ited the installation room for at least 2
hours, to create a temperature assimila-
tion and avoid condensation and dew.
Attention!
The limits indicated in the technical data
may not be exceeded, not even while
checking and putting into service of the
UMG 96L.
- The connection wires for the operating volta-
ge leading to the UMG96L must be suitable for
voltages up to 300V against ground.
- The measuring and operating voltage has to
be protected by a fuse, which must be in the
range of 2A to 10A.
- A switch or power switch for the operating vol-
tage must be provided within the building instal-
lation.
- The switch has to be near the instrument and
easily accessible.
- The switch must be marked as separation for
this instrument.
Ꮨ
Ꮨ

Page 7
Sum current measurement
If the current measurement is carried out via
two current transformers, the total transformer
ratio must be set to the UMG96L.
Example: Sum current transformer
A current measurement is carried out via one
current transformer with a ratio of 1000/5A and
another one with a ratio of 200/5A. The sum
measurement is carried out with a sum trans-
former 5+5/5A.
The UMG96L has to be programmed as fol-
lows:
Primary current: 1000A + 200A = 1200A
Secondary current: 5A
Current measurement
The current measurement is carried out via ../
5A or ../1A current transformers. In case that
the current has to be measured by an Ampere-
meter in addition to the UMG96L, the Ampere-
meter has to be connected in series to the
UMG96L.
In mains with voltage up to 300VAC against
ground, currents up to 5A can be connected
and measured directly to the UMG 96L.
Attention!
Current transformers may not be han-
dled in open condition of the secondary,
as the secondary clamps can lead live
voltage.
Attention!
Prior to connecting or exchanging the
UMG 96L, the secondary clamps of the
external current transformers have to be
short circuited.
Diagr. Connection example: UMG96L with
Amperemeter in series.
Ꮨ
Ꮨ
Attention!
The program allows current and voltage
transformer ratio setting only, if the maxi-
mum phase power can reach up to
50.0MW and the sum power can reach a
maximum value of 150.0MW.
L l
K k A
l
k
UMG96L
Verbraucher
Consumer
Einspeisung
Supply Verbraucher 1
Consumer 1 Verbraucher 1
Consumer 1
Einspeisung 1
Supply 1 Einspeisung 1
Supply 1
UMG96L
L l
K k
L l
K k
AK AL
K l
k l
BK Bl
Inaccuracy
The inaccuracy of the current measuring input
is +- 1% of the measuring range (5A). There-
fore, the inaccuracy of the current measure-
ment is +-50mA.
Example: Inaccuracy
With a current transformer 200/5A, the meas-
uring range is 200A. The inaccuracy is +-1% of
200A = +-2A.
Resolution
The maximum resolution of the current meas-
uring inputs is 10mA. The indication changes
in 0.01A steps.
Example: Resolution current transformer 200/
5A
With a current transformer ratio of 200/5A, a
resolution of 10mA*40 = 400mA is effected.
The display changes in 0.4A steps.
Small currents
The minimum working current is 20mA.At short
circuited or open current measurement input,
the UMG 96L can indicate a small current. This
current is within the range of the allowed meas-
urement inaccuracy.


Page 8
Diagr.: Connection example 4
Measurement with three voltage transformers
and two current transformers.
Connecting options
Diagr.: Connection example 1
Four wire measurement with three current
transformers
Diagr: Connection example 2. Four wire meas-
urement with two current transformers.
Diagr.: Connection example 3
Measurement with three voltage transformers
and three current transformers.
UMG96L
Voltage Measure-
ment
see type plate
Current
measurement
0,02 .. 5A
L1L2 L3 N
Verbraucher
Consumer
kl
kl
../5(1)A
../5(1)A
L1
L2
L3
PEN
1k 1l 2k 2l 3k 3l
1234 5678910
UMG96L
Voltage Measure-
ment
see type plate
Current
measurement
0,02 .. 5A
L1L2 L3 N
Verbraucher
Consumer
kl
klkl
../5(1)A
../5(1)A
../5(1)A
L1
L2
L3
PEN
1k 1l 2k 2l 3k 3l
1234 5678910
xx
UMG96L
Voltage Measure-
ment
see type plate
Current
measurement
0,02 .. 5A
L1L2 L3 N
uu u
UUU
x
XXX
Verbraucher
Consumer
kl
klkl
../5(1)A
../5(1)A
../5(1)A
L1
L2
L3
PEN
1k 1l 2k 2l 3k 3l
1234 5678910
xx
UMG96L
Voltage Measure-
ment
see type plate
Current
measurement
0,02 .. 5A
L1L2 L3 N
uu u
UUU
x
XXX
Verbraucher
Consumer
kl
kl
../5(1)A
../5(1)A
L1
L2
L3
PEN
1k 1l 2k 2l 3k 3l
1234 5678910

Page 9
Diagr.: Connection example 7
Measurement in IT networks via three current
transformers.
Verbraucher
Consumer
kl
klkl
../5(1)A
../5(1)A
../5(1)A
L1
L2
L3
N
UMG96L
Voltage Measure-
ment
see type plate
Current
measurement
0,02 .. 5A
L1L2 L3 N 1k 1l 2k 2l 3k 3l
1234 5678910
PE

Page 10
Putting into service
The putting into service of the UMG 96L should
be carried out as follows:
Installation
The UMG96L is designed for mounting in low
voltage distributions, which contain overvoltage
in measurement category III. The UMG96L is
suitable for installation in fixed and weather
proof panels. Conducting panels must be
earthed. Any mounting position is possible. For
mounting on front panels or doors, the deliv-
ered fixing brackets have to be used.
Program current and voltage transformers
When the device leaves the manufacturer, a
current transformer of 5/5A is set.
The set voltage transformer ratio has to be
changed only, if a voltage transformer is con-
nected.
When connecting voltage transformers, please
observe the allowed measuring and operating
voltage stated on type plate!
Attach measuring and operating voltage
The allowed measuring and operating voltage
of UMG 96L is indicated on the type plate.
Ꮨ
The connection wires for measuring voltage
leading to the UMG96L must be suitable for
voltages up to 300V against ground and 520V
phase to phase.
After connecting the stated measuring and op-
erating voltage to the UMG 96L, all segments
of the display appear. After approx. two sec-
onds, the UMG 96L switches to the first meas-
ured value indication.
In case that no indication appears, please
check, if the attached operating voltage is
within the rated voltage range.
Attention!
Mesuring and operating voltage, which
do not correspond to the indication on
the type plate, can lead to malfunction
and damage of the instrument.
Strommessung/Current Measurement
k l L2 L3L1 k l
k l
57 10896
Spannungsmessung
Voltage Measurement
21
L1
4
N
3
L3 L2
UMG96L 45-65Hz IP20 2,5VA Made in Germany
S V J M A D E
P

2-
10A
Diagr. Side view 42 6
90
96
Fixing brack-
ets
123
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
123
Panel max. 6

Page 11
Check measurement
Provided that all voltage and current inputs are
connected correctly, the phase and sum power
is calculated and displayed correctly.
Check phase power
In case that a current transformer is assigned
to the wrong outer conductor, the correspond-
ing power is measured and indicated incor-
rectly.
The assignment of the outer conductor and cur-
rent transformer is correct, if no voltage is
measured between the outer conductor and the
primary of the corresponding current trans-
former.
To ensure that the outer conductor at the volta-
ge input is assigned to the right current trans-
former, please short circuit the secondary of the
corresponding current transformer. The appar-
ent power of this phase at UMG 96L must be
indicated by zero.
If the apparent power is indicated correctly, but
the real power has a „-“ sign, the current trans-
former clamps are interchanged, or power is
supplied to the energy supplier.
Check sum power
Provided that all voltage, current and power in
the corresponding phase is indicated correctly,
the sum power must be displayed correctly by
UMG 96L either.
For verification, the sum power measured by
UMG96L should be compared to the energy
stated by the real and reactive energy counters
of the supplier.
Connect measuring current
The UMG96L is designed for the connection of
../1A and ../5A current transformers. With the
current inputs, only alternating current but no
direct current can be measured.
Check current direction
Short circuit two current transformers on the
secondary. The real power in the connected
phase has to be:
Positive (+) for consumption of real power and
negative (-) for supply of real power (power sta-
tion service).
In case that no real power is indicated, the as-
signment of voltages and currents may be
wrong.
Check phase assignment
The assignment of the outer conductors to the
current transformer is correct, if a current trans-
former is short circuited on the secondary, and
the indicated current in the corresponding
phase decreases to a value at the UMG96L,
which corresponds to the secondary current
plus tolerance.
Attention!
Current transformers may not be han-
dled in open condition, as there might be
live voltage at the secondaries.
Please connect the current inputs one after the
other, and compare the indicated current of the
display with the actual current. Please note,
that the current transformer ratio is set to 5/5A
and has to be adapted to the existing current
transformers.
In case that the current transformer is short
circuited on the secondary, the indicated cur-
rent at the corresponding conductor at UMG
96L has to decrease to a value, that corre-
sponds to the secondary current plus tolerance.
The current indicated by UMG 96L, has to con-
form to the input current, under consideration
of the current transformer and tolerance.
Ꮨ
Strommessung/Current Measurement
k l
L2 L3L1 k l
k l
57 10896
Spannungsmessung
Voltage Measurement
21
L1
4
N
3
L3 L2
UMG96L 45-65Hz IP20 2,5VA Made in Germany
S V J M A D E
P

2-
10A

Page 12
Elimination of errors
Error
Display dark.
Measured value can-
not be called up.
No current indication.
Current too small.
Current incorrect.
Voltage L-N incor-
rect.
Voltage L-L too small
/ too high.
Reason
Prefuse released.
Device defective.
The indication has been de-
leted from measured value se-
lection.
Corresponding voltage is not
connected.
Current measurement in wrong
phase
Current measurement in wrong
phase
Current transformer pro-
grammed incorrectly.
Measuring range exceeded.
The current peak at measuring
input was exceeded caused by
harmonic waves.
The current at measuring input
was below measuring range.
Measurement in wrong phase.
Voltage transformer ratio pro-
grammed incorrectly.
Phase conductors inter-
changed.
N not connected.
Voltage transformer ratio pro-
grammed incorrectly.
Elimination
Insert fuse.
Send the device to the producer for repair.
Add the required measured value indica-
tion to the measured value selection.
Connect corresponding voltage.
Check and correct connection.
Check and correct connection.
Read ratio of current transformer and pro-
gram accordingly.
Insert a current transformer with a higher
ratio.
Insert a current transformer with a higher
ratio.
Attention! Please ensure, that the meas-
uring inputs are not overloaded.
Insert a current transformer with a smaller
ratio.
Check and correct connection.
Check and correct connection.
Read the voltage transformer ratio at the
voltage transformer and program accord-
ingly.
Check and correct connection.
Check and correct connection.
Read voltage transformer ratio at the vol-
tage transformer and program accord-
ingly.

Page 13
Error
Phase shift ind/cap.
Programmed data
get lost.
Real power too small
/ too high.
Real power supply /
consumption inter-
changed.
„Err“ in display.
The device does not
operate in spite of
the above.
Reason
Current path is assigned to the
wrong voltage path.
The device was exposed to
electro magnetical distur-
bance, which was higher than
those mentioned in the techni-
cal data.
Current transformer ratio is
programmed incorrectly.
Current path is assigned to the
wrong voltage path.
At least one current trans-
former connection is inter-
changed.
Current path is assigned to the
wrong voltage path.
See „error messages“
Device defective.
Elimination
Check and correct connection.
Improve external protection measures
such as protection, filtering, earthing and
local separation.
Read current transformer ratio and pro-
gram accordingly.
Check and correct connection.
Check and correct connection.
Check and correct connection.
Please send the device back to the pro-
ducer with a detailed description of the
error.
Error messages
While exceeding an allowed measured value
range, the UMG 96L indicates the error mes-
sage „Err“.
An exceeding of a measured value range
arises, if at least one of the three existing cur-
rent or voltage inputs or the frequency is out of
the specified measuring range.
The symbols "V", "A" and „Hz“ indicate, which
measured value is out of range.
The phase is marked by the arrows upwards in
which the exceeding occured.
Attention!
Voltage and current beyond the specifi-
cations may destroy the device.
Exceeding of measuring
range in phase L1/L2/L3
A = Current path
V = Voltage path
Hz = Frequency
L1
L2
L3
Hz
VA

Page 14
Usage and indication
The usage of the UMG96L is carried out via the
keys one and two. Measured values and pro-
gramming data are indicated on the liquid crys-
tal display. You must distinguish between
Indication mode and
Programming mode.
By entering a password, you can avoid uninten-
tional change of programming data.
Indication mode
In indication mode please scroll through the
programmed measured value indications by
using the keys 1 and 2. When the device is de-
livered, you can call up all measured values
shown in table 1. For each measured value in-
dication, up to three measured values are indi-
cated. The measured value rotation allows to
indicate all selected measured values on an al-
ternate basis with a selectable changing time.
Programming mode
In programming mode the settings, which are
necessary for the operation of the UMG96L,
can be indicated and changed. Pressing the
keys 1 and 2 simultaneously for about 1 sec-
ond, you reach programming mode via the
password indication. If no user password is pro-
grammed, you reach the first programming
menu directly. The programming mode is
marked with the text „PRG“ in the display.
With key 2 you can shift between the program-
ming menues.
If you are in the programming mode and no
keys are pressed for 60 seconds, or you press
the keys 1 or 2 simultaneously for approx. 1
second, you return to the indication mode.
Programming mode
Key 2
Key1
12
cap
cos
ind ϕϕ
ϕϕ
ϕ
cap
cos
ind ϕϕ
ϕϕ
ϕ
cap
cos
ind ϕϕ
ϕϕ
ϕ
L1
L2
L3
Hz
S
CT VT
K1
K2
L-L
PRG
MkWh
MkVArh
Programming menus:
- Current transformer,
- Voltage transformer,
- Averaging times,
Measured value indications
- Changing time,
- Measured value selection,
- Measured value rotation,
- Delete minimum and peak values,
- Delete energy,
- LCD contrast,
- Software Release,
- User pasword.

Page 15
Key functions
2
1
2
2
1
simultaneous
long short
1
simultaneous
long
short
Measured
values
Program-
ming menu
Measured
values
Measured
values Measured
values
Program-
ming menu
2
1Confirm selection
short digit +1
long digit -1
Program-
ming menu
2short value *10
(decimal point to the
right)
long value /10
(decimal point to the left)
Indication mode Password Programming mode
ScrollProgramming Change mode
2
long
short
Program-
ming menu
2
flashing

Page 16
Measured values
L1 Apparent power
L2 Apparent power
L3 Apparent power
Mean values
L1 Apparent power
L2 Apparent power
L3 Apparent power
Measured value
sum
real power
Mean value
sum
real power
Measured value
sum
apparent power
Mean value
sum
apparent power
Maximum value
(Consumption)
sum
real power, mean
Maximum value
(Consumption)
sum
real power meas.
Maximum values
L1 Apparent power
L2 Apparent power
L3 Apparent power
Maximum value
sum meas. value
apparent power
Maximum values
L1-N Voltage
L2-N Voltage
L3-N Voltage
Minimum values
L1-N Voltage
L2-N Voltage
L3-N Voltage
Maximum values
L1 Real power
L2 Real power
L3 Real power
Minimum values
L1 Real power
L2 Real power
L3 Real power
Measured values
L1-L2 Voltage
L2-L3 Voltage
L3-L1 Voltage
Table, measured value indication
Mean values
L1 Current
L2 Current
L3 Current
Maximum values
L1 Current
L2 Current
L3 Current
Max. values
L1 Curr. mean val.
L2 Curr. mean val.
L3 Curr. mean val.
Measured values
L1-N Voltage
L2-N Voltage
L3-N Voltage
Measured values
L1 Current
L2 Current
L3 Current
Measured value
ΣCurrent in N
Measured values
L1 Real power
L2 Real power
L3 Real power
Mean values
L1 Real power
L2 Real power
L3 Real power
Maximum values
L1 Real power
L2 Real power
L3 Real power
Mean value
ΣCurrent in N
Maximum value
ΣMeasured value
current in N
Maximum values
ΣMean value
current in N

Page 17
Mean values
L1 Reactive power
L2 Reactive power
L3 Reactive power
Measured values
L1 Reactive power
L2 Reactive power
L3 Reactive power
Max. values (ind)
L1 Reac. power
L2 Reac. power
L3 Reac. power
Measured value
Sum
reactive power
Mean value
Sum
reactive power
Max. value (ind)
Sum
reactive power
Measured value
L1 cos(phi)
L2 cos(phi)
L3 cos(phi)
Measured value
Sum
cos(phi)
Measured value
L1 Frequency
Measured value
(Consumption)
Sum
real energy
Measured value
Sum
reactive energy(ind)
Working hours
counter

Page 18
Current transformer
Current transformers with either 1A or 5A sec-
ondary can be connected to the UMG96L.
A transformer ratio of 5A/5A is preset by the
manufacturer. In programming mode the cur-
rent transformer setting is marked by the sym-
bol „CT“.
Programming
In programming mode please scroll to the cur-
rent transformer ratio by pressing key 2. Con-
firm the selection by pressing key 1.
The first digit of the primary current flashes and
can be changed by pressing key 2.
If key 1 pressed again the next digit will be se-
lected and flashes now.
If the entire digit flashes, the decimal point can
be moved.
Press key 2 shortly - The decimal point moves
to the right.
Press key 2 longer - The decimal point moves
to the left.
If no digit flashes anymore, you can shift to the
indication of the voltage transformer.
Primary (5.00kA = 5000A)
Secondary Current
transformer
symbol
PRG
k A
L1
L2
L3 CT
Example: Sum current transformer
A current measurement is carried out via two
current transformers, one with a ratio of 1000/
5A and another transformer with a ratio of 200/
5A. The sum measurement is carried out with
a sum current transformer 5+5/5A.
The UMG96L has to be programmed with the
following values:
Primary current: 1000A + 200A = 1200A
Secondary current: 5A
Attention!
The program allows current and voltage
transformer ratio setting only, if the maxi-
mum phase power can reach up to
50.0MW and the sum power can reach a
maximum value of 150.0MW.

Page 19
Voltage transformer
The phase to phase voltage (L-L) is indicated
on display of the UMG 96L as secondary and
primary voltage. The transformer ratio is calcu-
lated from the programmed primary and sec-
ondary voltage. In programming mode, the vol-
tage transformer settings are marked by the
symbol „VT“.
The standard version is preset by the manufac-
turer with a ratio of 400V/400V.
The secondary voltage is always indicated in
„V“. The corresponding symbol „V“ is not dis-
played.
The primary voltage is indicated in „V“ or „kV“.
The corresponding symbol is displayed in „V“
or „kV“.
Primary voltage
Secondary voltage
Phase to phase
Voltage transformer ratio
PRG
V
L1
L2
L3 VT
L-L

UMG96L Setting range voltage transformer
Version Type plate L-L secondary L-L primary
Standard version 196 .. 255V 400V 100V .. 60kV (400V)
Special version 90 .. 160V 200V, 220V 100V .. 60kV (200V)
Special version 45 .. 80V 100V, 110V 100V .. 60kV (100V)
Secondary voltage is 100V
Primary voltage is 10,0kV
Programming
In programming mode, please scroll to the vol-
tage transformer setting by pressing key 2.
Confirm selection with key 1.
The first digit of the primary voltage flashes and
can be changed by pressing key 2.
If key 1 is pressed again the next digit will be
selected and flashes.
If the entire digit flashes, you can move the
decimal point.
If no digit flashes anymore, you may shift to in-
dication and programming of the outputs by
pressing key 2. Example: Voltage transformer ratio 100V/10kV
PRG
kV
L1
L2
L3 VT
L-L
Attention!
The program allows current and voltage
transformer ratio setting only, if the maxi-
mum phase power can reach up to
50.0MW and the sum power can reach a
maximum value of 150.0MW.

Page 20
Averaging times
A mean value is calculated for the most at the
current and power values. A common averag-
ing time for the current measured values L1,
L2, L3 and N , as well as one for power meas-
ured values, real power, apparent power and re-
active power is programmable.
Presettings:
Averaging time of currents = 900 seconds
Averaging time of power = 900 seconds
The following averaging times are selectable:
5, 10, 30, 60, 300, 480, 900 seconds
Programming of averaging time
Averaging time for real power
In programming mode please scroll to the av-
eraging time for power with key 2. Confirm se-
lection by pressing key 1.
The averaging time flashes and can be
changed by pressing key 2. Confirm changed
averaging time with key 1.
The averaging time stops flashing. The averag-
ing time for power has been programmed.
By using key 2 you can now shift to program-
ming menu „Averaging time for current“.
Averaging time for Currents
In programming menu please scroll to the av-
eraging time for currents. Confirm selection by
pressing key 1.
The averaging time flashes and can be
changed by pressing key 2. Confirm changed
averaging time with key 1. The averaging time
stops flashing. The averaging time for currents
has been programmed. By using key 2 you can
now shift to programming menu „Rotation time“.
Example for the averaging time of current mean
value, here 30 seconds.
Example for the averaging time of real power
mean value, here 900 seconds.
Method of taking the mean
The used exponential method reaches at least
95% of the measured value after the set aver-
aging time.
MEn= MEn-1 + (MA-MEn-1) / N
MEn= indicated mean value
MA = measured value
n = consecutive digit
N = digit of measured values, of witch
mean values shall be built.
L1
L2
L3
S
PRG
W
PRG
MkWh
MkVArh
L1
L2
L3
S
PRG
A