Janitza UMG96L User guide

Universal Measuring Device

L1-N / L1-L2
L2-N / L2-L3
L3-N / L3-L1

UMG96L

Operating Instructions

Brief instructions see last page

Mean value

Programming mode
Sum measurement
Phase to phase

Password
Voltage transformer
Current transformer

Peak value Minimum value

Dok Nr. 1.031.014.0

Supply

Key 1 Key 2

Janitza electronics GmbH

Vor dem Polstück 1
D-35633 Lahnau
Support Tel. [phone]
Fax [phone]
e-mail: [e-mail]
Internet: http://www.janitza.de

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

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 condi­tion of the manual or damage caused by the
use of it. As failures cannot be avoided com­pletely, we shall be very grateful for any advice.
We are anxious to remove all failures as soon
as possible. The mentioned software and hard­ware descriptions are registered trademarks in
the most cases and are subject to the regula­tions by law. All registered trademarks are prop­erty of the corresponding companies and are
fully recognized by us.

Page 2

Issue Note

13.01.2004 First Edition.

The meaning of symbols

Receipt control

The symbols, which are used in this manual,
have the following meaning:

Beware of dangerous electrical voltage.

Ꮨ


Hints for the user

This device may be inserted and used by quali­fied 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 famil­iar with installation, mounting, putting into serv­ice and operation of the product and have quali­fications according to their occupation, for ex­ample:

- 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.

This symbol shall warn you about possi­ble danger, which can occur during instal­lation, putting into service and usage.

In order to ensure a perfect and safe use of the
device, a proper transport, expert storage, erec­tion and mounting and careful usage and main­tenance is required. In case that a safe opera­tion 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 condi­tions for a longer time (e.g. storage beyond al­lowed climate without adaption to the room cli­mate, dew etc.) or transport use (e.g. falling
from great height, even without visible dam­age).

Please test the contents of delivery for comple­tion, before starting the installation of the de­vice.

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.



Ꮨ

Attention!

If the device is not used according to this
manual, a safe use cannot be granted,
and the instrument might cause danger.

Attention!

If a UMG 96L is installed in panels of
metal, the panel must be earthed.



This manual also describes options,
which have not been delivered and do
not belong to the contents of delivery.

Page 3

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 re­peated.
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.

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.

You can reach us:
Monday until Thursday

between 07:00 and 15:00

and Friday

between 07:00 and 12:00

Waste management

The UMG96L can be disposed and recycled as
electronical waste according to the legal regu­lations.

Janitza electronics GmbH
Vor dem Polstück 1
D-35633 Lahnau
Support: Tel. [phone]
Fax [phone]
e-mail: [e-mail]
Internet: http://www.janitza.de

Page 4

Product description

Intended use

The UMG96L is suitable for fix mounting and
the measurement of voltage, current, power
etc. in low voltage switchgear. The measure­ment is designed for 3 phase systems with neu­tral 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 un­supervised 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 con­nected.
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 operating
voltage is carried out on the back side of the
UMG96L via all-insulated spring power clamps.

Functional description

The electronical three phase measurement sys­tem determines and digitalizes the effective val­ues of voltages and currents in 50/60 Hz net­works.
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. Meas­uring signal interruptions, which last longer than
one second are safely recognized.
For each random test one period is scanned.
From those sampled values the microprocessor
calculates the electric quantities. These meas­ured values are indicated within the program­mable 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 in­puts is calculated from the net frequency of
phase 1. At a net frequency of 50Hz the scan­ning frequency is 2,5kHz and for 60Hz it is
3,0kHz.

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 installa­tion. The separation (switch or power switch)
must be near the UMG 96L and easily accessi­ble.

L1

L2

L3

N

PE

3M

3M

Voltage measurement

Generation of oper-

ating voltage

3M

UMG96L

Diagr. Generation of the operating voltage from
measurement voltage.

Page 5

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 gener­ated by the measuring voltage. The measure­ment is designed for three phase systems with
neutral conductor (TN and TT mains). The
measuring and operating voltages must be con­nected to the UMG 96L via a separation (switch
or power switch) and an overcurrent protection
(2-10A) within the building installation.The con­nection 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 operat­ing voltage.

- The connection wires for the operating volta­ge 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 vol­tage must be provided within the building instal­lation.

- The switch has to be near the instrument and
easily accessible.

- The switch must be marked as separation for
this instrument.

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 operat­ing 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 operat­ing voltage.

Attention!

Ꮨ

The limits indicated in the technical data
may not be exceeded, not even while
checking and putting into service of the
UMG 96L.

Ꮨ

Attention!

Before the device is connected to volta­ge for the first time, it should be depos­ited the installation room for at least 2
hours, to create a temperature assimila­tion and avoid condensation and dew.

Page 6

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 Ampere­meter in addition to the UMG96L, the Ampere­meter 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.

Verbraucher

Consumer

L l

K k

A

Einspeisung

Supply

Diagr. Connection example: UMG96L with
Amperemeter in series.

l

UMG96L

k

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 trans­former 5+5/5A.
The UMG96L has to be programmed as fol­lows:

Primary current: 1000A + 200A = 1200A
Secondary current: 5A

Verbraucher 1

Consumer 1

L l

Verbraucher 1

Consumer 1

L l

Inaccuracy

The inaccuracy of the current measuring input
is +- 1% of the measuring range (5A). There­fore, the inaccuracy of the current measure­ment is +-50mA.
Example: Inaccuracy
With a current transformer 200/5A, the measur­ing range is 200A. The inaccuracy is +-1% of
200A = +-2A.

Resolution

The maximum resolution of the current meas­uring 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 meas­urement inaccuracy.

Ꮨ

Ꮨ



K k

Einspeisung 1

Supply 1

AK AL

K l

k l

UMG96L

BK Bl

K k

Einspeisung 1

Supply 1

Attention!

Current transformers may not be handled
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.

Attention!

The program allows current and voltage
transformer ratio setting only, if the maxi­mum phase power can reach up to

50.0MW and the sum power can reach a
maximum value of 150.0MW.

Page 7

Connecting options

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

L1
L2
L3
PEN

Diagr.: Connection example 1
Four wire measurement with three current
transformers

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

k

../5(1)A

../5(1)A

l

../5(1)A

k

l

Consumer

Verbraucher

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

L1
L2
L3
PEN

Diagr: Connection example 2. Four wire meas­urement with two current transformers.

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

../5(1)A

../5(1)A

k

l

Consumer

Verbraucher

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

uu

u

xx

x
X

XX

L1
L2
L3
PEN

UUU

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

k

../5(1)A

../5(1)A

l

../5(1)A

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

uu

u

xx

x

X

XX

L1
L2

k

l

Verbraucher

Consumer

L3
PEN

UUU

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

../5(1)A

../5(1)A

k

l

Consumer

Verbraucher

Diagr.: Connection example 3
Measurement with three voltage transformers
and three current transformers.

Page 8

Diagr.: Connection example 4
Measurement with three voltage transformers
and two current transformers.

UMG96L

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

uu

u

x
X

XX

L1
L2
L3

UUU

xx

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

../5(1)A

k

../5(1)A

../5(1)A

l

k

Consumer

Verbraucher

Diagr.: Connection example 5
Medium voltage measurement with three volta­ge transformers and three current transformers.

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

uu

u

x
X

XX

L1
L2
L3

UUU

xx

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

../5(1)A

../5(1)A

kl

Consumer

Verbraucher

Diagr.: Connection example 6
Medium voltage measurement with three volta­ge transformers and two current transformers.

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N 1k 1l 2k 2l 3k 3l

L1
L2
L3
N

PE

Current

measurement

0,02 .. 5A

kl

../5(1)A

k

../5(1)A

../5(1)A

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

uu

u

x

xx

X

XX

l

k

l

Consumer

Verbraucher

L1
L2
L3

PE

UUU

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

k

../5(1)A

../5(1)A

l

../5(1)A

k

l

Consumer

Verbraucher

Diagr.: Connection example 7
Measurement in IT networks via three current
transformers.

Diagr.: Connection example 8
Measurement in IT networks with three volta-
ge transformers and three current transformers.

Page 9

Putting into service

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

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 delivered
fixing brackets have to be used.

Panel max. 6

Fixing brack-

ets

90

42

Diagr. Side view

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

96

6

Attach measuring and operating voltage

The allowed measuring and operating voltage
of UMG 96L is indicated on the type plate.

Attention!

Ꮨ

Mesuring and operating voltage, which
do not correspond to the indication on
the type plate, can lead to malfunction
and damage of the instrument.

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 op­erating voltage to the UMG 96L, all segments
of the display appear. After approx. two sec­onds, the UMG 96L switches to the first meas­ured value indication.
In case that no indication appears, please
check, if the attached operating voltage is within
the rated voltage range.

S V J M A D E P

UMG96L

45-65Hz IP20

2,5VA

Made in Germany

4

N

Spannungsmessung

Voltage Measurement

1

2

3

L3

L1

L2

2-10A



Strommessung/Current Measurement

k l

L2 L3L1

k l

k l

57 10896

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 con­nected.
When connecting voltage transformers, please
observe the allowed measuring and operating
voltage stated on type plate!

Page 10

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.

Attention!

Ꮨ

Current transformers may not be han­dled in open condition, as there might be
live voltage at the secondaries.

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 sta­tion service).
In case that no real power is indicated, the as­signment of voltages and currents may be
wrong.

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 cur­rent at the corresponding conductor at UMG
96L has to decrease to a value, that corre­sponds to the secondary current plus tolerance.
The current indicated by UMG 96L, has to con­form to the input current, under consideration
of the current transformer and tolerance.

S V J M A D E P

UMG96L

45-65Hz IP20

2,5VA

Made in Germany

4N3

Spannungsmessung

Voltage Measurement

1

2

L1

L2

L3

2-10A



Strommessung/Current Measurement

k l

57 10896

L2 L3L1

k l

k l

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 correspond­ing power is measured and indicated incor­rectly.
The assignment of the outer conductor and cur­rent transformer is correct, if no voltage is
measured between the outer conductor and the
primary of the corresponding current trans­former.
To ensure that the outer conductor at the volta­ge input is assigned to the right current trans­former, please short circuit the secondary of the
corresponding current transformer. The appar­ent 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 trans­former clamps are interchanged, or power is
supplied to the energy supplier.

Check phase assignment

The assignment of the outer conductors to the
current transformer is correct, if a current trans­former 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.

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.

Page 11

Elimination of errors

Error

Display dark.

Measured value can­not be called up.

No current indication.

Current too small.

Current incorrect.

Reason

Prefuse released.
Device defective.

The indication has been de­leted from measured value se­lection.

Corresponding voltage is not
connected.

Current measurement in wrong
phase

Current measurement in wrong
phase
Current transformer pro­grammed incorrectly.
Measuring range exceeded.

Elimination

Insert fuse.
Send the device to the producer for repair.

Add the required measured value indica­tion to the measured value selection.

Connect corresponding voltage.

Check and correct connection.

Check and correct connection.

Read ratio of current transformer and pro­gram accordingly.
Insert a current transformer with a higher
ratio.

Voltage L-N incor­rect.

Voltage L-L too small
/ too high.

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 pro­grammed incorrectly.

Phase conductors inter­changed.

N not connected.

Voltage transformer ratio pro­grammed incorrectly.

Insert a current transformer with a higher
ratio.
Attention! Please ensure, that the meas­uring 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 accord­ingly.

Check and correct connection.

Check and correct connection.

Read voltage transformer ratio at the vol­tage transformer and program accord­ingly.

Page 12

Error

Reason

Elimination

Phase shift ind/cap.

Programmed data
get lost.

Real power too small
/ too high.

Real power supply /
consumption inter­changed.

„Err“ in display.

Current path is assigned to the
wrong voltage path.

The device was exposed to
electro magnetical distur­bance, which was higher than
those mentioned in the techni­cal data.

Current transformer ratio is
programmed incorrectly.
Current path is assigned to the
wrong voltage path.

At least one current trans­former connection is inter­changed.
Current path is assigned to the
wrong voltage path.

See „error messages“

Check and correct connection.

Improve external protection measures
such as protection, filtering, earthing and
local separation.

Read current transformer ratio and pro­gram accordingly.
Check and correct connection.

Check and correct connection.

Check and correct connection.

The device does not
operate in spite of
the above.

Device defective.

Error messages

While exceeding an allowed measured value
range, the UMG 96L indicates the error mes­sage „Err“.
An exceeding of a measured value range
arises, if at least one of the three existing cur­rent 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 specifi­cations may destroy the device.

Please send the device back to the pro­ducer with a detailed description of the
error.

A = Current path
V = Voltage path
Hz = Frequency

L1

VA

Hz

L2

L3

Exceeding of measuring
range in phase L1/L2/L3

Page 13

Usage and indication

The usage of the UMG96L is carried out via the
keys one and two. Measured values and pro­gramming data are indicated on the liquid crys­tal display. You must distinguish between

Indication mode and

Programming mode.
By entering a password, you can avoid uninten­tional 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 de­livered, you can call up all measured values
shown in table 1. For each measured value in­dication, up to three measured values are indi­cated. The measured value rotation allows to
indicate all selected measured values on an al­ternate basis with a selectable changing time.

L1

L2

L3

cap
cos
ind

cap
cos
ind

cap
cos
ind

Programming mode

ϕϕ

ϕ

ϕϕ

ϕϕ

ϕ

ϕϕ

ϕϕ

ϕ

ϕϕ

Key1

PRG
MkWh
MkVArh

Hz
S

L-L

CT VT
K1
K2

12

Key 2

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 sec­ond, you reach programming mode via the
password indication. If no user password is pro­grammed, 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 program­ming 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 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 14

Key functions

Indication mode

Change mode

Measured

long

2

values

Measured

short

values

ScrollProgramming

Measured

values

simultaneous

21

Measured

values

Password

Programming mode

simultaneous

21

Program-

ming menu

Program-

ming menu

Program-

ming menu

long

2

short

long

1

short

Program-

ming menu

1

Confirm selection

2

short digit +1
long digit -1

2

short value *10

(decimal point to the
right)

2

flashing

long value /10

(decimal point to the left)

Page 15

Table, measured value indication

Measured values

L1-N Voltage
L2-N Voltage
L3-N Voltage

Measured values

L1-L2 Voltage
L2-L3 Voltage
L3-L1 Voltage

Measured values

L1 Current
L2 Current
L3 Current

Measured value

Σ Current in N

Mean values

L1 Current
L2 Current
L3 Current

Mean value

Σ Current in N

Maximum values

L1-N Voltage
L2-N Voltage
L3-N Voltage

Maximum values

L1 Real power
L2 Real power
L3 Real power

Maximum values

L1 Current
L2 Current
L3 Current

Maximum value

Σ Measured value

current in N

Minimum values

L1-N Voltage
L2-N Voltage
L3-N Voltage

Minimum values

L1 Real power
L2 Real power
L3 Real power

Max. values
L1 Curr. mean val.
L2 Curr. mean val.
L3 Curr. mean val.

Maximum values

Σ Mean value

current in N

Measured values

L1 Real power
L2 Real power
L3 Real power

Measured value

sum

real power

Measured values
L1 Apparent power
L2 Apparent power
L3 Apparent power

Measured value

sum

apparent power

Mean values
L1 Real power
L2 Real power
L3 Real power

Mean value

sum

real power

Mean values

L1 Apparent power
L2 Apparent power
L3 Apparent power

Mean value

sum

apparent power

Maximum values

L1 Real power
L2 Real power
L3 Real power

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 value

(Consumption)

sum

real power, mean

Page 16

Measured values
L1 Reactive power
L2 Reactive power
L3 Reactive power

Mean 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

Measured value

L1 cos(phi)
L2 cos(phi)
L3 cos(phi)

Measured value

Sum

cos(phi)

Measured value

L1 Frequency

Mean value

Sum

reactive power

Max. value (ind)

Sum

reactive power

Measured value

(Consumption)

Sum

real energy

Measured value

Sum

reactive energy(ind)

Working hours

counter

Page 17

Current transformer

Current transformers with either 1A or 5A sec­ondary can be connected to the UMG96L.
A transformer ratio of 5A/5A is preset by the
manufacturer. In programming mode the cur­rent transformer setting is marked by the sym­bol „CT“.

Primary (5.00kA = 5000A)

PRG

L1

k A

Programming

In programming mode please scroll to the cur­rent transformer ratio by pressing key 2. Con­firm 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 se­lected 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.

L2

CT

L3

Secondary

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

Current
transformer
symbol



Page 18

Attention!

The program allows current and voltage
transformer ratio setting only, if the maxi­mum phase power can reach up to

50.0MW and the sum power can reach a
maximum value of 150.0MW.

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 calcu­lated from the programmed primary and sec­ondary voltage. In programming mode, the vol­tage transformer settings are marked by the
symbol „VT“.
The standard version is preset by the manufac­turer with a ratio of 400V/400V.

The secondary voltage is always indicated in
„V“. The corresponding symbol „V“ is not dis­played.
The primary voltage is indicated in „V“ or „kV“.
The corresponding symbol is displayed in „V“ or
„kV“.

UMG96L Setting range voltage transformer

Version Type plate L-L secondary L-L primary

Primary voltage

L1

L2

L3

Secondary voltage

Phase to phase
Voltage transformer ratio

PRG

V

L-L

VT

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)

Programming

In programming mode, please scroll to the vol-

Primary voltage is 10,0kV

tage transformer setting by pressing key 2.
Confirm selection with key 1.

L1

PRG

kV

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.

L2

L3

L-L

VT

If no digit flashes anymore, you may shift to in­dication and programming of the outputs by

Secondary voltage is 100V

pressing key 2.

Example: Voltage transformer ratio 100V/10kV



Attention!

The program allows current and voltage
transformer ratio setting only, if the maxi­mum phase power can reach up to

50.0MW and the sum power can reach a
maximum value of 150.0MW.

Page 19

Averaging times

A mean value is calculated for the most at the
current and power values. A common averag­ing time for the current measured values L1, L2,
L3 and N , as well as one for power measured
values, real power, apparent power and reac­tive power is programmable.

Method of taking the mean

The used exponential method reaches at least
95% of the measured value after the set aver­aging time.

MEn = ME

+ (MA-ME

n-1

n-1

) / N

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 aver­aging time for power with key 2. 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 power has been programmed.
By using key 2 you can now shift to program­ming menu „

Averaging time for current“

.

ME

= indicated mean value

n

MA = measured value
n = consecutive digit
N = digit of measured values, of witch

mean values shall be built.

PRG

L1

L2

L3

Example for the averaging time of real power
mean value, here 900 seconds.

W

S

Averaging time for Currents
In programming menu please scroll to the aver­aging 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“

Page 20

PRG

L1

PRG

MkWh

A

MkVArh

L2

L3

S

Example for the averaging time of current mean
value, here 30 seconds.

.

Measured value indication

Once in a second all measured values are cal­culated and can be indicated on the display.
Two methods are available for calling up the
measured value indications (see table 1).

- The selection of measured value indications
via the keys 1 and 2, herein called measured
value selection.

- The automatically rotating indications of se­lected measured value indications, herein
called measured value rotation.

A measured value rotation time has be pro­grammed additionally for the measured value
rotation.

All mesured values for the measured value se­lection are preset by the manufactures. For the
automatic rotation nothing is preset by the
manufacturer. The rotation time is preset with 0
seconds.

Measured value rotation time

Both methods are available simultaneously.
The measured value rotation is programmed, if
at least one measured value indication and one
measured value rotation time bigger than 0 sec­onds is programmed. If no key is pressed for
about 60 seconds, an automatical change to ro­tation mode will be carried out, and all pro­grammed measured values will be indicated
one after the other.

Setting range of measured value rotation time:

0 .. 250 seconds

If 0 seconds are programmed, no rotation will
be carried out. Nevertheless, measured value
indications which are not programmed in the

measured value selection

, can be used for

measured value rotation.

Rotation time in seconds indicated

PRG

L1

L2

L3

S

Abb.

Programming

In programming mode please scroll to the menu
measured value rotation, by using key 2. Con­firm selection with key 1.

The first digit of the rotation time flashes and
can be changed by pressing key 2. By pressing
key 1 again the next digit will be selected and
flashes.
If no digit flashes anymore, you can shift to pro­gramming menu „

Measured value selection“

by

pressing key 2.

Page 21

Measured value selection

All measured values stated in table 1 (see page
16 and 17) can either be displayed via keep 1
and 2 measured value selection or automati-
cally measured value rotation.
All measured values for the measured value
selection are preset by the manufakturer. For
the automatical measured value rotation noth­ing is preset by the manufakturer.
The condition of the selection is indicated by
the output symbols. These symbols have the
following meaning:

Measured value selection
K1 The indication can be reached via the keys.
K1 The indication cannot be reached via keys.

Measured value rotation
K2 The indication changes automatically.
K2 The indication does not change automati-

cally.

PRG

L1

L2

L3

Programming

In programming mode please scroll to program­ming menu mesured value indication by
pressing key 2.
Confirm selection by pressing key 1.
The first measured value indicated stated in ta­ble 1 (see page 16 and 17) occurs.
A selection of the measured value indication is
carried out by pressing the keys quickly.
Key 1 - Scroll to the right within the measured

value indications.

Key 2 - Scroll downwards within the measured

value indications.

For the selected measured value indication, it
can now be determined whether it will be avail­able for measured value selection and for auto­matic rotation.
The selection is carried out by an extended
push on keys 1 or 2.
Key 1 - Measured value selection.
Key 2 - Automatic rotation.

Measured value indication of

the current values

L1

L2

L3

Measured value selection

Measured value rotation

PRG

A

K1
K2

Once the programming is finished, you return
to indication mode by pressing keys 1 and 2 si­multaneously.

Page 22

Delete minimum and maximum
values

In programming mode, „Deletion of minimum
and maximum values“ is marked by arrows up­wards and downwards. All minimum and maxi­mum values will be deleted simultaneously in
menu „Deletion of minimum and maximum val­ues“.
An exception is the maximum value of the cur­rent mean value. The maximum value of the
current mean value can also be deleted directly
in indication menu by an extended pressing of
key 2.

Delete

In programming mode please scroll to

of minimum and maximum values”

key 2.
With key 1 you can shift between the indicated
digits 0 and 1. These digits have the following
meaning:
0 = Minimum and maximum values not to

be deleted.

1 = Minimum and maximum values to be

deleted.

“Deletion

by pressing

PRG

L1

L2

L3

PRG

L1

L2

L3

Leave menu “Deletion of minimum and maxi­mum values” by pressing key 2. In case that
digit 1 was displayed, all minimum and maxi­mum values were deleted.

Delete energy

The real and reactive energy can only be de­leted together via the keys.

Delete

In programming mode please scroll to the menu

“delete energy”

By pressing key 1 you can shift between digits
0 and 1. These digits have the following mean­ing:
0 = Real and reactive energy not to be deleted.
1 = Real and reactive energy to be deleted.

by using key 2.

L1

L2

L3

L1

L2

PRG

Wh

PRG

Wh

Leave menu “Delete energy” by pressing key 2.
In case that digit 1 was displayed real and
reaktive energy were deleted.

L3

Page 23

Working hours counter

The working hours counter detects the time, in
which the UMG96L measures and indicates
data. The time is measured with a resolution of
15 minutes and is indicated in hours. The work­ing hours counter cannot be deleted.

L1

h

L2

L3

Display example: The UMG96L indicates 40201
working hours.

LCD contrast

The favoured view for the LCD display is from
below. The LCD contrast of the LCD display
can be adapted by the user. The contrast set­ting is possible in the range from 0 to 7.

0 = very light
7 = very dark

Programming

In programming mode please scroll to LCD con­trast by pressing key 2. Confirm selection with
key 1.

The first digit of the contrast setting is flashing.
Move to the right digit with key 1.
Now you can change the digit with key 2.
Afterwards you can shift to programming menu

„user password“

by pressing key 2.

PRG

L1

L2

L3

PRG

L1

L2

L3

Page 24

Software Release

The internal software of the UMG96L will be
improved and extended continuously. The soft­ware update is registered in the device by a
specific number the so called software release.
The software release cannot be changed by the
user.

PRG

L1

L2

L3

Example: In UMG96L, the software release

1.23 is installed.

User password

A user password can be programmed in order
to avoid an unintentional change of program­ming data. Only after entering the correct pass­word, a shifting into the following programming
menues possible.
No user password by the manufacturer is pre­set (000). In this case, the password menu will
be skipped and you reach the current trans­former menu directly.

In case that a user password was programmed,
a „000“ appears in the display of the password
menu.
The first digit of the password menu flashes and
can be changed with key 2. By pressing key 1,
the next digit will be selected and flashes.
Only after the correct password was entered,
you reach the programming menu for the cur­rent transformer.
In case that a changed password is not known
anymore, the device must be sent back to the
manufacturer.

PRG

L1

L2

L3

User password

Page 25

Uncertainty of measurement

Quantity Indicating range Measuring range1) tolerance

allowance

Meas. and auxiliary volt. 195..255V

Voltage L-N 0 .. 34kV 196 .. 255V +-1,0% rng
Voltage L-L 0 .. 60kV 340 .. 442V +-2,0% rng
Current 0,00 .. 9,99kA 0,02 .. 6,00A +-1,0% rng
Current in N 0,00 .. 9,99kA 0,06 .. 18,00A +-3,0% rng
Real power, consumption, sum 0,00W .. 150MW 3,9W .. 3,825kW +-1,5% rng
Real power, supply, sum -0,00W .. -150MW -3,9W .. -3,825kW +-1,5% rng
Apparent power, sum 0,00VA .. 150MVA 3,9VA .. 3,825kVA +-1,5% rng
Reactive power (Q0), sum 0,00var .. 150Mvar 3,9var .. 3,825kvar +-1,5% rng

Meas. and aux. volt. 90 .. 160V

Voltage L-N 0 .. 34kV 90 .. 160V +-1,0% rng
Voltage L-L 0 .. 60kV 156 .. 277V +-2,0% rng
Current 0,00 .. 9,99kA 0,02 .. 6,00A +-1,0% rng
Current in N 0,00 .. 9,99kA 0,06 .. 18,00A +-3,0% rng
Real power, consumption, sum 0,00W .. 150MW 1,8W .. 2,4kW +-1,5% rng
Real power, supply, sum -0,00W .. -150MW -1,8W .. -2,4kW +-1,5% rng
Apparent power, sum 0,00VA .. 150MVA 1,8VA .. 2,4kVA +-1,5% rng
Reactive power (Q0), sum 0,00var .. 150Mvar 1,8var .. 2,4kvar +-1,5% rng

2)

Meas. and aux. volt. 45 .. 80V

Voltage L-N 0 .. 34kV 45 .. 80V +-1,0% rng
Voltage L-L 0 .. 60kV 78 .. 139V +-2,0% rng
Current 0,00 .. 9,99kA 0,02 .. 6,00A +-1,0% rng
Current in N 0,00 .. 9,99kA 0,06 .. 18,00A +-3,0% rng
Real power, consumption, sum 0,00W .. 150MW 0,9W .. 1,2kW +-1,5% rng
Real power, supply, sum -0,00W .. -150MW -0,9W .. -1,2kW +-1,5% rng
Apparent power, sum 0,00VA .. 150MVA 0,9VA .. 1,2kVA +-1,5% rng
Reactive power (Q0), sum 0,00var .. 150Mvar 0,9var .. 1,2kvar +-1,5% rng

cos(phi) 0,00i .. 1.00 .. 0,00c

3)

Frequency (of voltage) 45,0 .. 65,0Hz +-1,5% rdg
Reactive energy, inductive

5)

v

< 10 0..999 999 9.99kvarh class 2
v5) < 100 0..999 999 99.9kvarh class 2
v5) >= 100 0..999 999 999kvarh class 2

4)

4)

4)

Real energy, consumption

5)

v

< 10 0..999 999 9.99kWh class 2
v5) < 100 0..999 999 99.9kWh class 2
v5) >= 100 0..999 999 999kWh class 2

4)

4)

4)

Working hours counter 0..999 999 999h +-2Min./Day



Page 26

Attention!

The program allows current and voltage transformer ratio setting only, if the maximum phase
power can reach up to 50.0MW and the sum power can reach a maximum value of 150.0MW.

These specifications presuppose a yearly calibration and a warm up time of 10 minutes.
Used abbreviations:

rng = of measuring range
rdg = of measured value

1)

Measuring range with scale factor = 1, (Current tranformer = 5/5A, 1/1A)

2

) In the range of -10..18°C and 28..55°C, an additional error of +-0,5‰ of measured value has to

be considered per K.

3

) If the measured apparent power is in the range of 1% .. 100% of the measuring range, cos(phi)

is indicated with an accuracy of +-3%.

4)

Accuracy class according to DIN EN61036:2001-01, VDE0418part 7, IEC61036:1996 + A1:2000

5)

The maximum indication range and the resolution of real and reactive energy depends on

Transformer ratio v = vi * vu.

vi = Transformer ratio of current transformer.
vu = Transformer ratio of voltage transformer.

Example: 200/5A -> vi = 40

1000/100V -> vu = 10
v = vi * vu
v = 40 *10
v = 400

Energy

/kvarh /kWh

999.999.999

210.000.000

21.000.000,0

2.100.000,00

Indication range and resolution for

real and reactive energy

1 10 100 400 v

Transformer ratio v

Page 27

Configuration data

Description Display Setting range Presettings

Current transf., primary CT 1A .. 10,0kA 5A
Current transf., secondary CT 1A, 5A 5A
Voltage transf., primary
Type plate, 196 .. 255V VT 100V .. 60.0kV 400V
Type plate, 90 .. 160V VT 100V .. 60.0kV 200V
Type plate, 45 .. 80V VT 100V .. 60.0kV 100V
Voltage transformer, sec.
Type plate, 196.. 255V VT 400V (not changeable) 400V
Type plate, 90 .. 160V VT 200V, 220V 200V
Type plate, 45 .. 80V VT 100V, 110V 100V
Averaging time, current 5, 10, .. 900Sec. 900Sec.
Averaging time, power 5, 10, .. 900Sec. 900Sec.
Measured value rotation 0 .. 250seconds 0 = no rotation
Measured value selection All indications all indications
LCD contrast 0 .. 7 3
Software Release not changeable x.xx
User passwort 000 .. 999 „000“ = no password
Working hours counter not changeable 0h

Page 28

Declaration of conformity

The UMG96L fulfills the protection guidelines of:

Guideline 89/336/EWG in combination with DIN EN61326 (2002-03) as well as
Guideline 73/23/EWG and 93/68/EWG in combination with EN 61010-1 (2002-08)

Safety guidelines

Safety requirements for electrical equipment for measurement, control, and laboratory use
Part1: General requirements : EN61010-1:2001, IEC 61010-1:2001

Test voltage

Enclosure against measuring inputs : 2kV AC
Between the inputs for measuring and auxiliary voltage and the current inputs exists a functional
separation of 2000V AC.

EMC requirements

Electromagnetic emission : DIN EN61326:2002-03, table 4, class B
Electromagnetic immunity : DIN EN61326:2002-03, table A.1

Enclosure : ESD test, IEC61000-4-2:2001 (4kV/8kV)

: Electromagnetic RF-field, IEC61000-4-3:2002 (10V/m)
: Netfrequent magnetic field, IEC61000-4-8:2000 (120A/m)

AC-power line : AC-Power variation and dropout, IEC61000-4-11:2000

: Fast transients (Burst), IEC61000-4-4:2001 (2kV)
: Powerful pulse (Surge), IEC61000-4-5:2000 (1kV L- N)
: RF induced on lines, IEC61000-4-6:2000 (3V)

Current transformer inputs : Fast transients (Burst), IEC61000-4-4:2001 (2kV)

: Powerful pulse (Surge), IEC61000-4-5:2000 (1kV)
: RF induced on lines, IEC61000-4-6:2000 (3V)

Page 29

Technical data

Weight : 250g
Calorific value : 2,2MJ (610Wh)

Ambient conditions

Measurement category : III (Measurement within building installation)
Pollution degree : 2
Protection class : II = with protective earth
Ambient temperature : -10°C .. +55°C
Storage temperature : -20°C .. +70°C
Humidity : 15% up to 95% without dew
Protection class

Front : IP50 according to IEC60529
Front with seal (Option) : IP65 according to IEC60529

Back side : IP20 according to IEC60529
Mounting position : random
Operating height : 0 .. 2000m over sea level

Measurement

Measuring inputs

Measuring rate : 1 measurement per second

Rated pulse voltage : 4kV

Signal frequency : 45Hz .. 1000Hz

Scanning frequency : 2,5kHz/3,0kHz (Net frequency 50Hz/60Hz)
Measuring and operating voltage : see type plate
Fuse : 2A .. 10A (medium time lag type)
Frequency of fundamental : 45Hz .. 65Hz
Power consumption Phase (L1-N) : ca. 2,5VA
230V/400V Standard version

Range L-N : 196 .. 255V AC

Range L-L : 340 .. 442V AC
120V/220V Special version

Range L-N : 90 .. 160V AC

Range L-L : 156 .. 277V AC
60V/120V Special version

Range L-N : 45 .. 80V AC

Range L-L : 78 .. 139V AC

Current measurement

Power consumption : approx. 0,2VA

Rated current at ../5A (../1A) : 5A (1A)

Minimum working current : 20mA
Current limit at ../1A : 1,2A (sinus shape)
Current limit at ../5A : 6A (sinus shape)

Overload : 150A for 2 Sec.

Accuracy class of energy measurement : class 2

Connectable cables

One wire, multiple-wire, fine wire : 0,08 - 2,5mm
Pin contacts : 1,5mm2, only one conductor may be connected

per terminal!

Page 30

2

Dimensions

123

123

123

123

123

123

123

123

1

3

1

3

123

123

1

3

1

3

123

123

1

3

1

3

123

123

123

123

123

123

123

123

123

123

123

123

123

123

123

1

3

1

3

123

123

123

123

123

123

123

123

123

Cut out: 92

Fixing angles

+0,8

x 92

+0,8

mm

Panel max. 6

90

2

2

2

2

2

2

S V J M A D E P

UMG96L

45-65Hz IP20

2,5VA

Made in Germany

96

4N3

Spannungsmessung

Voltage Measurement

1

2

L3

L2

L1

2-10A



Strommessung/Current Measurement

k l

2

2

57 10896

Type plate

L2 L3L1

k l

k l

42

Diagr. Side view

6

Diagr. Back view

All dimensions in mm

Connection example

UMG96L

Voltage Measure-

ment

see type plate

1234 5678910

L1 L2 L3 N

L1
L2
L3
PEN

Diagr.: Connection example 1
Four wire measurement with three current trans­formers.

Current

measurement

0,02 .. 5A

1k 1l 2k 2l 3k 3l

kl

../5(1)A

k

../5(1)A

../5(1)A

l

k

l

Consumer

Verbraucher

Page 31

Brief instructions

Change current transformer ratio

Shift to programming mode

If you are in the indication mode please press the keys 1 and
2 simultaneously for approx. 1 second. Now you reach pro­gramming mode.
The symbols for programming mode PRG and for the current
transformer CT appear.
Confirm selection with key 1.
The first digit of the primary flashes.

Current transformer symbol

Change primary current:

Change the flashing digit with key 2.
Select the next digit to be changed by pressing key 1.
The selected digit flashes.
If the entire number flashes, the decimal point can be
moved.

Change secondary current:

Only 1A or 5A can be set as secondary current.
Select secondary current with key 1.
Change flashing digit with key 2.

Leave programming mode:

Press both keys simultaneously for approx. 1 second.
The current transformer setting will be stored and you return
to indication mode.

Programming mode

L1

L2

L3

Primary current

L1

L2

L3

Secondary current

PRG

k A

CT

12

PRG

k A

CT

12

Call up measured values

Shift to indication mode

If you are in programming mode please press the keys 1 and
2 simultaneously for approx. 1 second. Now you reach the in­dication mode.
The symbol PRG for programming mode does not appear in
the display and the first measured value indication, e.g. for
the voltage appears.

Key 2

With key 2 you scroll between the different measured value
indications for current, voltage, power etc.

Key 1

With key 1 you scroll between the mean values, maximum
values etc., related to the corresponding measured value.

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L1

L2

L3

V

1

2