Lumel ND10 TYPE User Manual

1

METER OF NETWORK
PARAMETERS

ND10 TYPE

USER’S MANUAL

3

Contents

1. APPLICATION .................... ..... ..... ..... ..... ........................... 3

2. METER SET ...................................................................... 3

3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY ..................... 3

4. INSTALLATION .................................................................. 3

5. METER DESCRIPTION ... ... ........ ... ... ........ ... ... ........ ... ... ........ .. 4

6. ND10 METER PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7. SOFTWARE UPGRADE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8. RS-485 INTERFACE . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . 17

9. ERROR CODES .................................................................24

10. TECHNICAL DATA .......... ... ............. ... .......... ... ................ ... . 24

11. ORDERING CODES . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . 28

ND10-09/1 User's manual

3

1 APPLICATION

The ND10 meter is a digital programmable panel meter destined for the measurement of the 3­phase, 4-wire power network parameters in balanced and unbalanced systems. It is also capable of
displaying measured quantities and their simultaneous digital transmission. The meter is also capable of
controlling and optimization of the power electronic devices, systems, and industrial installations.
The meter can be used for measuring: RMS value of voltage and current; active, reactive and apparent
power; active and reactive energy, power parameters; frequency, 15-, 30- and 60-minute mean active
power and THD. Additionally, a current in the neutral wire is calculated from the phase current vectors .
Voltage and current values are multiplied by given voltage and current ratios of measuring transformers.
Power and energy indications take into account all programmed ratio values. Any and all measured values
can be sent to the master via the RS-485 interface. The relay outputs signal alarm when selected
parameters exceed set limits. Impulse output can be used for consumption check of the 3-phase real
energy. This meter is also able to detect and signal incorrect phase sequence.
The meter is powered by the measuring circuit, i.e. from the voltage output.
There is a galvanic separation between following units of the meter:

- voltage and current inputs,

- RS-485 output,

- impulse output.

2 METER SET

Complete set of the meter includes:

- ND10 Meter 1 pcs.

- user's manual 1 pcs.

- warranty card 1 pcs.

- seal 1 pcs.

- panel mounting bracket 4 pcs.

3 BASIC REQUIREMENTS, OPERATIONAL SAFETY

ND10 Meter fully conforms with the requirements of EN 61010-1 standard.
Additional comments concerning safety:

• The meter should be installed and connected only by a qualified personnel. All relevant safety
measures should be observed during installation.

• Always check the connections before turning the meter on.

• Removal of the meter housing during the warranty period voids the warranty.

• This meter conforms to all requirements of the electromagnetic compatibility in the industrial

environment.

• Building power network should include switch or automatic circuit breaker positioned in the
convenient vicinity of the meter. It should be properly marked and available to operator at all times.

4 INSTALLATION

ND10 Meter is adapted to be mounted to the panel with mounting brackets (see Fig. 1). Meter housing
is made of plastic.

Housing dimensions: 96 x 96 x 77 mm. On the outer side of the meter there are screw and tab terminal
strips that can be used for connecting external wires with diameter up to 2.5 mm

2

.

Prior to installation a 92,5

+0.6

x 92,5

+0.6

mm slot must be made in the panel. The thickness of the panel
material should not exceed 15 mm. The meter must be placed in the panel from the front. During
installation the powering voltage must be off. When the panel is inserted in the slot, mount it in place with
provided mounting brackets.

ND10-09/1 User's manual

4

1

2

Fig. 1. Meter fitting

Fig. 2. Meter dimensions

5 METER DESCRIPTION

5.1 Curre n t inp u ts

All current inputs are galvanically isolated (internal current transformers). The meter is suited to operate
together with external measuring current transformers. Displayed values of currents as well as their
derivative values are automatically calculated using set ratio value of the external transformer. Current
inputs are specified in the order as either 1 A or 5 A.

5.2 Volta g e inp u ts

Displayed values of voltages as well as their derivative values are automatically calculated using set ratio
value of the external transformer. Voltage inputs are specified in the order as either 3 x 57.7/100 V, 3 x
230/400 V or 3 x 290/500 V.

ND10-09/1 User's manual

5

5.3 Conne c t ion d iagra m s

Semi-indirect measurement
in a 4-wire network

Direct measurement
in a 4-wire network

L1

L2
L3

N

1819202123 2224252627

5678911

B A

GNDI

RS 485 AL1

ND10

+

WYimp

34 2

1213141517 16

1

AL2

1819202123 2224252627

5678911

B

AGNDI

RS 485 AL1

L1
L2

L3

ND10

N

+

WYimp

34 2

1213141517 16

1

S

1

S

2

P

1

P

2

S

1

S

2

P

1

P

2

S

1

S

2

P

1

P

2

AL2

ND10-09/1 User's manual

6

Caution: It is recommended to connect ND10 meters (RS-485) to a computer with a
shielded wire. A shield should be connected to ground in a single point. Shielded wire must be used in case
there are many interferences in the environment.

Fig 4. Connection diagrams of the meter in the 4-wire network.

Indirect measurement using
3 current transformers
and 3 voltage transformers
in 4-wire network

L1

L2

L3

S

1

S

2

P

1

P

2

S

1

S

2

P

1

P

2

S

1

S

2

P

1

P

2

N

1819202123 2224252627

5678911

BAGNDI

RS 485 AL1

ND10

+

WYimp

34 2

1213141517 16

1

a

b

A

B

a

b

AB

a

b

A

B

AL2

ND10-07/1 User's manual

7

6 ND10 METER PROGRAMMING

6.1 Fro nt pa n el

Fig. 5. Front panel

Front panel description:
1 – cancel button (ESC)
2 – move left button
3 – decrease value button
4 – increase value button
5 – move right button
6 – confirm button (ENTER)
7 – digital data transmission symbols
8 – connection / alarm symbols
9 – unit at displaying THD and power guard
10 – THD value display symbols
11 – power coefficient and power tangent

display symbol

12 – mean active power value display symbol
13 – menu safety symbol
14 – units of the displayed values
15 – 3-phase values display symbol
16 – base values ratios
17 – field for displaying base values, power, THD,

date, mean values, frequency, time and power

guard
18 – min / max value symbols
19 – symbols of value-phase connection
20 – power and energy characteristics symbol

ND10-07/1 User's manual

8

6.2 Power - on me s sages

After connection of voltage inputs the meter performs a display test and displays the ND10 meter
name, build and current software version.

where: r n.nn is a number of the current software version or special build number.
b n.nn is a bootloader version number.

Fig. 6. Meter start messages

Caution! If the display shows Err Cal or Err EE message, please contact the maintenance

service.

6.3 Par a meter disp l ay

In the measurement mode, values are displayed according to set tables. Pressing button (left)
or (right) allows user to switch between displayed base values (table 1). Pressing button
(down) displays minimal value and pressing button (up) displays maximal value. When these
values are displayed, pressing the ESC button resets all minimal or maximal values. When
buttons

and are pressed simultaneously, respective mean 3-phase values are displayed,
together with minimal and maximal values (see Table 2).
RS-485 interface allows setting the values that are to be displayed.

Error display is described in section 8.
When reactive power is displayed, this indication is accompanied by a symbol of the load: capacity

load ( ) or inductive load ( ).
Base values displayed in the field 17 (Fig. 5.). Option (parameter) shown in the Table 1 indicated that

displaying of this parameter may be turned off in register 4056 via RS485. Turning this parameter off
(from U to tg) disables displaying their respective mean / 3-phase values.

Table 1

Displayed symbols

L1,V
L2,
L

3

L12,V
L23,
L

31

L1,A
L2,
L

3

L1,W
L2,
L

3

L1,Var
L2,
L

3

L1,VA
L2,
L

3

L1,PF
L2,
L

3

L1,tg
L2,
L

3

kWh

Values

displayed

row 1 U1 U12 I1 P1 Q1 S1 PF1 tg1 Active

energy

consumed

row 2 U2 U23 I2 P2 Q2 S2 PF2 tg2
row 3 U3 U31 I3 P3 Q3 S3 PF3 tg3

Display fixed

optio

nal

fixed fixed

optionaloptionaloptio

nal

optio

nal

optional

ND10-07/1 User's manual

9

Displayed symbols -, kWh

kVarh

kVarh

L1, THD U
L2,
L

3

L1, THD I
L2,
L3,

Values

displayed

row 1

Active
output

energy

Reactive

energy

(inductive)

/

Reactive

energy

(positive)

Reactive

energy

(capacity)

/

Reactive

energy

(negative)

THD U1 %

THD I1 %

row 2

THD U2 %

THD I1 %

row 3

THD U3 % THD I1 %

Display optional optional optional optional optional

Displayed symbols HZ 3L, W P

AVG

A % Date/time

Values

displayed

row 1

f(L3)

ΣP

3-phase

(15,

30

or 60 min.)

I

(N)

Ordered power

consumption

(within 15, 30 or

60 min.)

Year

row 2 min min min Month.day
row 3 max max max Hours : minutes

Display

optio

nal

optional optional optional optional

Mean values and corresponding minimal and maximal values (when pressed on the first 8
base value screens, following markers are highlighted: 3L, ,) .

Table 2

Displayed symbols 3L, V 3L, V 3L, A 3L, W 3L, Var 3L, VA 3L, PF 3L, tg

Values

displayed

row 1

U

LN

av.

3-phase

U

LL

av.

3-phase

I

av.

3-phase

P Q S PF tg

row 2 min min min min min min min min
row 3 max max max max max max max max

When upper limit of the indication range is exceeded, it is indicated by two horizontal lines in upper
part of the display. Conversely, when lower limit is exceeded, it is indicated by two horizontal lines in
the lower part of the display. When mean power is measured ΣP

3-phase

separate measurements are
made for 15-second quantum. Depending on chosen value (15 min, 30 min, 60 min) calculated mean
value is based on 60, 120 or 240 measurements. After the meter is turned on or after the power is
reset, the first value will be calculated in 15 seconds after turning meter on or resetting. Until all
probed values of the active power are acquired, mean power value is calculated from values already
measured. Current in the neutral wire I

(N)

is calculated from phase current vectors.
When alarms are activated, symbols A1 and/or A2 are displayed. When alarms are deactivated and
alarm signalization latch is turned on, flashing symbols A1 and/or A2 are displayed.

ND10-07/1 User's manual

10

6.4 Oper atin g mode s

Fig. 7. ND10 meter operating modes

O

or

3 sec

O

or

3 sec

3 sec

O

or 30 sec

O

or 30 sec

Tryb POMIAR

TEST

Par

out ALr1

min max

lub

= 0

T

N

Change of quantity

value

dAtE

Data

mode

Parameters acc. to

the table 7

T

Selection

of quantities for

modification

MEASURING mode

S

switching on

Supply

Display of minimum

Aand maximum value

Change

of displayed

basic quantities

Display of mean

and 3-phase quantities

Erasing of alarm

support

Preview of configured

parameters

rEAd onLY

SEC code

Introduce the code

O

or

O

or

O

or 30 sec

Selection

of

parameters

Meter parameters

mode

Parameters acc. to the

table 3

def = Y manufacturer’s

parameters

Output parameters

mode

Parameters acc. to the

table 4

def = Y manufacturer’s

parameters

Parameters of alarm 1 or 2

mode Parameters acc. to the

table 5

def = Y manufacturer’s

parameters

O

or

30 sec

O

or

30 sec

O

or

30 sec

O

or

30 sec

30

sec

30

sec

30

sec

30 sec

30 sec

30

sec

30

sec

30

sec

O

or

Selection

of quantities for

modification

Selection

of quantities for

modification

O

or

Selection

of quantities for

modification

O

or

O

or

O

or

O

or

O

or

Change of quantity

value

Change of quantity

value

Change of quantity

value

O

or

O

or

O

or

O

or

min

Erasing

Erasing

T

tSE

or

ALr2

ND10-07/1 User's manual

11

6.5 Par amete r se tting

ND10 meters are configured with the use of LPCon software available for free on the

www.lumel.com.pl web site.

Fig 8. Setup menu

Programming mode is enabled by pressing and holding

button for about 3 seconds. To enable
the programming user bust enter a correct access code. If there is not such a code, the program
transits into the programming option. Message SET (in the first row) and first parameter group PAr

are displayed. User can view parameters at any time by pressing and holding button for about
3 seconds.

6.5 . 1

Sett i n g of M eter P arame t ers

In options menu choose PAr (using or buttons) and confirm selection with the
button.

Table 3

Ite

m

Parameter

name

Marki

ng

Range Notes/description Manufact

urer’s

value

1 Access code

entry

SEC oFF,

1 … 60000

0 – no code 0

2 Current

transformer ratio

tr_I 1 …

10000

1

3 Voltage

transformer ratio

tr_U 0.1 …

4000.0

1

4 Mean active

power

synchronization

Syn 15, c_15,

c_30, c_60

Mean active power synchronization:

15 - 15-minute moving window

c_15 – measurement synchr. with clock

every 15 min.

c_30 – measurement synchr. with clock

every 30 min.

c_60 – measurement synchr. with clock

every 60 min.

15

5 Recording

minimal and

maximal values

complete with

errors

erLi oFF, on oFF – recording only correct values

(within measurement range),

on – recording all errors occurring in

measurements (values in 1e20 and

-1e20 registers)

on

6 Method of

reactive energy

calculation

En_q cAP, sIGn cAP – inductive and capacity energy

sIGn – positive and negative energy

cAP

7 Display panel

illumination

diSP oFF,1…60,

on

off, on, 1..60 – illumination time (in
seconds) from pressing the button

on

8 Energy counters En_0 no, EnP, no – no activity, EnP – erase active no

ND10-07/1 User's manual

12

erasing Enq, ALL energy, Enq – erase reactive, ALL –

erase all energies

9 Mean active

power erasing

PA_0 no, yES yES – erase power no

10 Ordered power PAor 0 … 144.0 Power ordered to establish power

consumption in % of rated power

100

11 Default settings dEf no, yES reverting to default (factory) group

settings

no

The automatic erasing of energy is carried out:

- for active energy when changing: voltage or current ratio;

- for reactive energy when changing: voltage or current ratio, reactive energy calculation method;
Buttons

and are used for setting the values while buttons and are used for

choosing position of the number to be set. The active position is signaled by the cursor. Set value can
be accepted by pressing the button or canceled by pressing the button. When value is to

be accepted, it is checked against the acceptable value range. If the set value falls outside the
allowable range, the meter remains in parameter setting mode and the value is set to the highest
possible value (when entered value is too high) or lowest possible value (when it is too low).

6.5 . 2

Sett i n g of O utpu t Param e ters

In Options choose the out mode and confirm your choice by pressing the. button.

Table 4

Ite

m

Parameter name Markin

g

range Notes/description Manufact

urer’s

value

1 # of impulses. Io_n 5000 …

20000

# of impulses per kWh 5000

2 MODBUS Network

Address

Adr 1 … 247 1

3 Transmission mode trYb 8n2, 8e1,

8o1, 8n1

8n2

4 Transmission speed bAUd 4.8 k, 9.6 k,

19.2 k, 38.4 k

9,6 k

5

Default settings

dEf no, yES reverting to default (factory)

group settings

no

6.5 . 3

Sett i n g ala r m par a met

ers

In Options choose ALr1 or ALr2 mode and confirm your selection by pressing the button.

Table 5

Ite

m

Parameter name Marki

ng

range Notes/description Manufact

urer’s
value

1 Value on alarm output

(code as in Tab. 6)

A1_n,
A2_n

table 6 P

2 Alarm type A1_t,

A2_t

n-on, n-oFF,

on,oFF, H-on,

H-oFF

Fig. 9. n-on

3 Lower value of the input

range

A1oF,

A2oF

-144.0 …

144.0

in % of the rated quantity value 99.0

4 Upper value of the input

range

A1on,
A2on

-144.0 …

144.0

in % of the rated quantity value 101.0

5 Time delay of the switch A1dt, 0 … 900 in seconds (for A1_n = P_ord, 0

ND10-07/1 User's manual

13

reaction

A2dt delay occurs only when alarm

is activated)

6

Alarm signalization latch

A1_S,
A2_S,

oFF, on When alarm signalization latch

is enabled and the alarm state

ends, alarm symbol is not

turned off but begins to flash.

Alarm symbol flashes until it is

turned off by pressing both

and buttons (for 3

seconds). This function refers

only to the alarm signalization,

so the relay connectors will

operate without support

according to the selected alarm

type.

oFF

7 Alarm re-activation

block

A1_b,
A2_b,

0 … 900 in seconds 0

8 Default settings dEf no, yES reverting to default (factory)

group settings

no

The write of the value ALon lower than ALoF switches the alarm off.
Selection of the monitored value:

Table 6

Item / value

in

4015

register

Displayed

element

Quantity type

Value needed for

calculations of

percentage outputs and

alarm values (100 %)

00 oFF no quantity /alarm disabled/ none
01 U_1 L1 phase voltage Un [V] *
02 I_1 L1 phase wire current In [A] *
03 P_1 L1 phase active power Un x In x cos(0°) [W] *
04 q_1 L1 phase reactive power Un x In x sin(90°) [var] *
05 S_1 L1 phase apparent power Un x In [VA] *
06 PF1 L1 phase active power factor 1
07 tg1

tg factorϕ of L1 phase

1
08 U_2 L2 phase voltage Un [V] *
09 I_2 L2 phase wire current In [A] *
10 P_2 L2 phase active power Un x In x cos(0°) [W] *
11 q_2 L2 phase reactive power Un x In x sin(90°) [var] *
12 S_2 L2 phase apparent power Un x In [VA] *
13 PF2 L2 phase active power factor 1
14 tg2

tg factorϕ of L2 phase

1
15 U_3 L3 phase voltage Un [V] *
16 I_3 L3 phase wire current In [A] *
17 P_3 L3 phase active power Un x In x cos(0°) [W] *
18 q_3 L3 phase reactive power Un x In x sin(90°) [var] *
19 S_3 L3 phase apparent power Un x In [VA] *
20 PF3 L3 phase active power factor 1
21 tg3

tg factorϕ of L3 phase

1
22 U_A mean 3-phase voltage Un [V] *
23 I_A mean 3-phase current In [A] *
24 P 3-phase active power (P1+P2+P3) 3 x Un x In x cos(0°) [W] *

ND10-07/1 User's manual

14

25 q 3-phase reactive power (Q1+Q2+Q3) 3 x Un x In x sin(90°) [var] *
26 S 3-phase apparent power (S1+S2+S3) 3x Un x In [VA] *
27 PF_A 3-phase active power factor 1
28 tg_A

tg factorϕ for 3 phases

1
29 FrEq frequency 100 [Hz]
30 U12 phase-to-phase voltage L1-L2

3

Un [V] *

31

U23

phase-to-phase voltage L2-L3

3

Un [V] *

32

U31

phase-to-phase voltage L3-L1

3

Un [V] *

33

U4_A

mean phase-to-phase voltage

3

Un [V] *

34 P_At mean active power 3 x Un x In x cos(0°) [W] *
35

P_ord

used % of the ordered active power
(used energy)

100 [%]

36 I_ne neutral wire current In [A] *

*Un, In – voltage and current rated values

a)

n-on b)

n-oFF

c)

On d)

OFF

Fig. 9. Alarm types (x – alarm no.): a),b) normal c) off d) on.

Remaining types of the alarm:

− H-on – always on;

− H-oFF – always off.

−

Example 1 of alarm setting:
Set n-on alarm type for monitored quantity P – 3-phase active power,
Version: 5 A; 3 x 230/400 V. Setting the alarm on after exceeding 3800 W, switching the alarm off
after power drops to 3100 W.
Calculations:: rated 3-phase active power: P = 3 x 230 V x 5 A = 3450 W
3450 W – 100 % 3450 W – 100 %
3800 W – A1on % 3100 W – A1oF %

1

0

Relay

disabled

Axon

Axof

Measured value

Contact

state

Relay

enabled

1
0

AxonAxof

Measured value

Relay

enabled

Relay

disabled

Contact

state

1
0

AxonAxof

Contact

state

Relay

disabled

Relay

enabled

Relay

disabled

Measured value

1
0

AxonAxof

Contact

state

Relay

enabled

Relay

enabled

Relay

disab led

Measured value

ND10-07/1 User's manual

15

In conclusion: A1on = 110,0 % A1oF = 90,0 %
Set: Monitored quantity: P; type of alarm: n-on, A1on 110,0, A1oF 90,0.

Example no 2 of alarm setting:
The value of ordered power consumption may be used for the purpose of prior warning that ordered
power might be exceeded. Ordered power consumption is calculated according to time period set for
the mean active power synchronization and value of the ordered power. Pre-emptive alarm should be
set so that it indicates the possibility of exceeding ordered power of 1MW at 90 % assuming
allocation of 15-minutes
(900 s). Measuring current transformer 2500: 5A, voltage 230 V. Peak max power consumption 1,5
MW.

Calculations::
ND10 meter active rated 3-phase power: P = 3 x k

U

x Un x kI x In = 3 x 1 x 230 V x 500 x 5A = 1,725
MW → 100 %.
Ordered-to-rated power ratio = 1 MW / 1.725 MW ≈ 57,97 % of meter rated value (rounded down) ­Pord;
Alarm operation hysteresis: alarm should be activated at 90 % ordered power (A1on), and
deactivated for e.g.: at 1 % lower 89 % (A1of).
Optimization of power limit function (delay at alarm activation):

alarm activation delay

to=10%∗

[

1MW∗900 s

1,5 MW

]

=60 s

(A1dt) .

Fig. 10. Measurement of used ordered 15 minutes’ active power

consumption synchronized with the clock, with alarm set on a 90%

consumption.

Fig. 10 shows an example of
how the consumed ordered
active power parameter can be
used to alarm activation. Delay
time is set at 0 seconds (A1dt).
In presented example for the
remaining 10 % of ordered
power at maximum power
consumption, all devices could
operate for additional 60
seconds without imposing
penalties. If the delay time A1dt
had been set to 60 seconds,
alarm would not have been
activated.

Set alarm as following: monitored quantity: A1_n = P_ord; alarm type: A1_t = n-on; A1on = 90,0,
AL1oF = 89,9; delay time A1dt = 0 or 60 s; A1_s = 0; A1_b = 0. Parameters should be set as
following: tr_I = 500; Syn = 15 or c_15, and Pord = 57.9.

1 MW

0

A1on = 90.0 %

Time

Imported

power

1
0

Relay

en abled

A1of = 89.9 %

Ordered power

State of
contacts

1,5 MW

100 %

Ordered power

(energy)

90 %

8:00:00

8:15:00

8:14:05

8:07:30

Time of delay A1dt = 0 sec

Relay

disabled

ND10-07/1 User's manual

16

6.5 . 4

Sett i n g Da t e and Time

In Options choose dAtE mode and confirm the selection with button. Seconds are reset to 0
after hour and minute values are set.

Table 7

Ite

m

Parameter name Markin

g

range Manufacturer’s value

1 Hour, minute t_H 0…23, 0..59 00.00
2 Month, day t_d 1…12, 1…31 1.01
3 Year t_y 2001 … 2100 2001

7 Software upgrade

ND10 meter (with digital output) allows for firmware upgrade via PC with LPCon software installed.
LPCon software is available as freeware on the www.lumel.com.pl web site. Upgrade is possible if PC
is connected to RS485 to USB converter, such as PD10 converter.

a)

b)

Fig. 11. Program window view: a) LPCon, b) software upgrades

Important! Software upgrade automatically reverts meter to its default (factory) settings, so it is
recommended to save meter settings with LPCon software before upgrading.

After launching LPCon program, set in Options required serial port, speed, mode and address of the
meter. Next, choose ND10 meter from Devices menu and click the Read icon to read all set
parameters (required for later recovery). After choosing Device software upgrade option from
Upgrade menu a Lumel Updater window appears(LU) – Fig. 11 b. Press Connect. The Messages
information window displays information concerning upgrade process. If the port is opened correctly,
a Port opened message appears. Upgrade mode may be entered using either of the two methods:
remotely via LU (using LPCon settings: address, mode, speed, COM port) or by switching on a meter

with a button pressed (while entering bootloader mode, upgrade button is used to set default
communication settings of the meter). Meter display shows the "boot" message and the software
version while the LU program displays Device found message along the name and version of the
software of connected device. Click the ... button and browse to the meter upgrade file. If the file is
opened correctly, a File opened message is displayed. Press the Send button. When upgrade is
successfully completed, meter reverts to the default settings and begins normal operation while the
information window displays Done message and upgrade elapsed time. After the LU window is
closed, click the Save icon to save all initially read parameters. Current software version can be
checked by reading Device information from LPCon software.

ND10-07/1 User's manual

17

Important! Turning the meter off during upgrade process may result in permanent damage!

8 RS-485 INTERFACE

Overview of the ND10 serial port parameters.

• identifier 0xCB

• meter address 1..247

• transmission speed 4.8, 9.6, 19.2, 38.4 kbit/s,

• operation mode Modbus RTU,

• transmission mode 8N2, 8E1, 8O1, 8N1,

• max. response time 750 ms.

• max. no. of registers read in a single query

- 40 4-byte registers,

- 80 2-byte registers,

• implemented functions - 03,06,16, 17,

- 03 register read,

- 06 1st register write,

- 16 register write,

- 17 device identification,
Manufacturer’s settings: address 1, speed 9.6 kbit/s, mode RTU 8N2,

ND10 meter register map

ND10 meter has data contained in 16-bit and 32-bit registers. Process variables and meter
parameters are placed in the address area of registers in a way depended on the variable value
type. Bits in 16-bit registers are numbered from the youngest to the oldest (b0-b15). 32-bit
registers include numbers of float type in IEEE-754 standard. Sequence of 3210 bytes – the
oldest is transmitted as the first.

Table 8

Address range Value type Description

4000 – 4057

Integer

(16 bits)

Value set in the 16-bit register. Register description is
presented in Table 9. Read and write registers.

7000 – 7319

Float

(2x16 bits)

Value is set in the two following 16-bit registers. These
registers contain the same data as 32-bit registers from 7500
– 7659 range. Readout registers. Bit sequence (3-2-1-0)

7500 – 7659

Float

(32 bits)

Value set in the 32-bit register. Register description is
presented in Table 10. Readout registers.

Table 9

Register

address

Operat

ions

Range Description Default

4000 RW 0 … 60000 Protection - password 0
4001 reserved

4002 RW 0...1200 [o/oo]

Mean ordered power *10

nominal signals

1000

4003 RW 1 … 10000 Current transformer ratio 1
4004 RW 1 … 40000 Voltage transformer ratio *10 10
4005 RW 0..3 Mean active power synchronization:

0 - 15-minute moving window
1 – measurement synchr. with clock every 15

minutes,

0

ND10-07/1 User's manual

18

2 – measurement synchr. with clock every 30

minutes,

3 – measurement synchr. with clock every 60

minutes,

4006 reserved
4007 RW 0.1

Max and min value saving method: 0 – no

errors, 1 – with errors

0
4008 reserved
4009 RW 0.1

Reactive energy calculation method:

0 – inductive and capacity energy

1 – positive and negative energy

0

4010 RW 0 … 61

Display panel illumination: 0 – off,

1-60 – illumination time in seconds from

pressing the button; 61 – always on

61

4011 RW 0 … 3

Energy counters erasing

0 – no changes, 1 – erase active energies,

2 – erase reactive energies, 3 – erase all

energies

0

4012 RW 0.1 Erasing mean active power P

AV

0
4013 reserved
4014 RW 0.1 Min and max erasing 0

4015 RW 0.1..35

Quantity on the relay output of alarm 1

(code as in Table 6)

24

4016 RW 0..5

Output type 1: 0 – n-on, 1– n-oFF, 2 – on,

3 – oFF, 4 – H-on, 5 – H-oFF

0

4017 RW

-1440..0..1440
[o/oo]

Lower value of the alarm 1 switch

of the rated input range

990

4018 RW

-1440..0..1440
[

o

/oo]

Upper value of the alarm 1 switch

of the rated input range

1010

4019 RW 0..900 s

Alarm 1 switch delay value (for AL_n = P_ord –

register 4015 = 35, delay occurs only at alarm

activation)

0

4020 RW

0.1

Alarm 1 signalization latch 0

4021 RW 0..900 s Alarm 1 re-activation block 0
4022 RW 0.1..35

Quantity on the relay output of alarm 2

(code as in Table 6)

24

4023 RW 0..5

Output type 1: 0 – n-on, 1– n-oFF, 2 – on,

3 – oFF, 4 – H-on, 5 – H-oFF

0

4024 RW

-1440..0..1440
[o/oo]

Lower value of the alarm 2 switch

of the rated input range

990

4025 RW

-1440..0..1440
[o/oo]

Upper value of the alarm 2 switch

of the rated input range

1010

4026 RW 0..900 s

Alarm 2 switch delay value (for AL_n = P_ord –

register 4015 = 35, delay occurs only at alarm

activation)

0

4027 RW

0.1

Alarm 2 signalization latch 0

4028 RW 0..900 s Alarm 2 re-activation block 0
4029 RW 5000 … 20000 No. of impulses for the impulse output 5000
4030 RW 1..247 MODBUS Network Address 1

4031 RW 0..3

Transmission mode: 0->8n2, 1->8e1, 2->8o1,

3->8n1

0

4032 RW 0..3 Transmission speed: 0->4800, 1->9600 1

ND10-07/1 User's manual

19

2->19200, 3->38400
4033 RW 0.1 Upgrade change of transmission parameters 0
4034 RW 0 … 2359 Hour *100 + minutes 0
4035 RW 101 … 1231 Month * 100 + day 101
4036 RW 2009 … 2100 Year 2009

4037 RW 0.1

Standard parameters save (complete with

reseting energy as well as min, max and mean

power to 0)

0

4038 RW 0..15258 Consumed active energy, two older bytes 0
4039 RW 0..65535 Consumed active energy, two younger bytes 0
4040 RW 0..15258 Released active energy, two older bytes 0
4041 RW 0..65535 Released active energy, two younger bytes 0
4042 RW 0..15258 Reactive inductive energy, two older bytes
4043 R 0..65535 Reactive inductive energy, two younger bytes
4044 R 0..15258 Reactive capacity energy, two older bytes 0
4045 R 0..65535 Reactive capacity energy, two younger bytes 0
4046 reserved
4047 reserved
4048 reserved
4049 reserved
4050 R 0..65535 Status Register – see description below 0
4051 R 0..65535 Status Register 2 – see description below 0
4052 reserved
4053 R 0..65535 Serial number two older bytes ­4054 R 0..65535 Serial number two younger bytes ­4055 R 0..65535 Software version (*100) ­4056 RW 0..65535 Quantity parameters displayed 0xFFFF
4057 reserved

Brackets [ ] contain, respectively: resolution or unit.
Energy is made available in hundreds of watt-hours (var-hours) in double 16-bit register, and for this

reason, one must divide them by 10 when calculating values of particular energy from registers, e.g.:
Consumed active energy = (reg. value 4038 x 65536 + reg. value 4039) / 10 [kWh]
Released active energy = (reg. value 4040 x 65536 + reg. value 4041) / 10 [kWh]
Reactive inductive energy = (reg. value 4042 x 65536 + reg. value 4043) / 10 [kVarh]
Reactive capacity energy = (reg. value 4044 x 65536 + reg, value 4045) / 10 [kVarh]

Status Register (address 4050, R):

Bit 15 – „1” – non-volatile memory damage Bit 7 – „1” – power averaging interval has not

ended

Bit 14 – „1” – no calibration or calibration error Bit 6 – „1” – frequency for THD calculation

outside ranges:

− 48 – 52 for 50 Hz,

− 58 – 62 for 60 Hz

Bit 13 – „1” – parameters value error Bit 5 – „1” – voltage too low for measurement of
Bit 12 – „1” – energy value error frequencies
Bit 11 – „1” – phase sequence error Bit 4 – „1” – L3 phase voltage too low
Bit 10 – current range „0” – 1 A~; 1” – 5 A~ Bit 3 – „1” – L2 phase voltage too low

Bit 2 – „1” – L1 phase voltage too low
Bit 1 – „1” – RTC
Bit 0 – relay output state „1” – on, „0” - off

Bit 9 Bit 8 voltage range

0 0 57,7 V~
0 1 230 V~

ND10-07/1 User's manual

20

Status Register 2 – reactive power characteristics (address 4051, R):

Bits 15 ... 12 - reserved
Bit 11 – „1” – capacity 3L max,
Bit 10 – „1” – capacity 3L min.
Bit 9 – „1” – capacity 3L
Bit 8 – „1” – capacity L3 max.
Bit 7 – „1” – capacity L3 min.
Bit 6 – „1” – capacity L3

Bit 5 – „1” – capacity L2 max.
Bit 4 – „1” – capacity L2 min.
Bit 3 – „1” – capacity L2
Bit 2 – „1” – capacity L1 max.
Bit 1 – „1” – capacity L1 min.
Bit 0 – „1” – capacity L1

Configuration register of displayed base quantities parameters (address 4056, R/W):

Bit 15 – „1” – phase-to-phase display
Bit 14 – „1” – reactive power display
Bit 13 – „1” – apparent power display
Bit 12 – „1” – power factor display
Bit 11 – „1” – power tangent display
Bit 10 – „1” – consumed active power display
Bit 9 – „1” – released active power display
Bit 8 – „1” – reactive capacity energy display

Bit 7 – „1” – reactive inductive power display
Bit 6 – „1” – current THD display
Bit 5 – „1” – voltage THD display

Bit 4 – „1” – frequency display
Bit 3 – „1” – mean active power display
Bit 2 – „1” – neutral wire current display
Bit 1 – „1” – usage of ordered power display
Bit 0 – „1” – time and date display

Table 10

16-bit

register

address

Registe

r

addres

s

32-bit

Oper
ation

s

Description Unit

7000 7500 R L1 phase voltage V
7002 7501 R L1 phase current A
7004 7502 R L1 phase active power W
7006 7503 R L1 phase reactive power var
7008 7504 R L1 phase apparent power VA
7010 7505 R L1 phase power factor (PF) ­7012 7506 R L1 phase reactive to active power ratio ­7014 7507 R L2 phase voltage V
7016 7508 R L2 phase current A
7018 7509 R L2 phase active power W
7020 7510 R L2 phase reactive power var
7022 7511 R L2 phase apparent power VA
7024 7512 R L2 phase power factor (PF) -

ND10-07/1 User's manual

21

7026 7513 R L2 phase reactive to active power ratio ­7028 7514 R L3 phase voltage V
7030 7515 R L3 phase current A
7032 7516 R L3 phase active power W
7034 7517 R L3 phase reactive power var
7036 7518 R L3 phase apparent power VA
7038 7519 R L3 phase power factor (PF) ­7040 7520 R L3 phase reactive to active power ratio ­7042 7521 R Mean 3-phase voltage V
7044 7522 R Mean 3-phase current A
7046 7523 R 3-phase active power (P1+P2+P3) W
7048 7524 R 3-phase reactive power (Q1+Q2+Q3) var
7050 7525 R 3-phase apparent power (S1+S2+S3) VA
7052 7526 R Mean power factor (PF) ­7054 7527 R Mean reactive to active power ratio ­7056 7528 R Frequency Hz
7058 7529 R Phase-to-phase voltage L

1-2

V

7060 7530 R Phase-to-phase voltage L

2-3

V

7062 7531 R Phase-to-phase voltage L

3-1

V
7064 7532 R Mean phase-to-phase voltage V
7066 7533 R Active power, 3-phase, 15, 30, 60 minutes (P1+P2+P3) W
7068 7534 R THD U1 %
7070 7535 R THD U2 %
7072 7536 R THD U3 %
7074 7537 R THD I1 %
7076 7538 R THD I2 %
7078 7539 R THD I3 %
7080 7540 R Cosine of U1 and I1 angle ­7082 7541 R Cosine of U2 and I2 angle ­7084 7542 R Cosine of U3 and I3 angle ­7086 7543 R Mean 3-phase cosine ­7088 7544 R Angle between U1 and I1 °
7090 7545 R Angle between U2 and I2 °
7092 7546 R Angle between U3 and I3 °
7094 7547 R Neutral wire current (calculated from vectors) A

7096 7548 R

Active 3-phase input energy (no. of register 7549
overflows, resets to 0 after reaching 99999999.9 kWh)

100 MWh

7098 7549 R

Active 3-phase input energy (counter counting up to

99999.9 kWh)

kWh

7100 7550 R

Active 3-phase output energy (no. of register 7551
overflows, resets to 0 after reaching 99999999,9 kWh)

100 MWh

7102 7551 R

Active 3-phase output energy (counter counting up to

99999.9 kWh)

kWh

7104 7552 R

Reactive 3-phase inductive energy (no. of register 7553
overflows, resets to 0 after reaching 99999999,9 kVarh).

100 Mvarh

7106 7553 R

Reactive 3-phase inductive energy (counter counting up to

99999.9 kVarh)

kvarh

7108 7554 R

Reactive 3-phase capacity energy (no. of register 7555
overflows, resets to 0 after reaching 99999999,9 kVarh).

100 Mvarh

7110 7555 R

Reactive 3-phase capacity energy (counter counting up to

99999.9 kVarh)

kvarh

7112 7556 reserved
7114 7557 reserved

ND10-07/1 User's manual

22

7116 7558 reserved
7118 7559 reserved
7120 7560 R Time – hours, minutes ­7122 7561 R Time – month, day ­7124 7562 R Time - year ­7126 7563 R Usage of ordered power %
7128 7564 R Voltage L1 min V
7130 7565 R Voltage L1 max V
7132 7566 R Voltage L2 min V
7134 7567 R Voltage L2 max V
7136 7568 R Voltage L3 min V
7138 7569 R Voltage L3 max V
7140 7570 R Current L1 min A
7142 7571 R Current L1 max A
7144 7572 R Current L2 min A
7146 7573 R Current L2 max A
7148 7574 R Current L3 min A
7150 7575 R Current L3 max A
7152 7576 R Active power L1 min W
7154 7577 R Active power L1 max W
7156 7578 R Active power L2 min W
7158 7579 R Active power L2 max W
7160 7580 R Active power L3 min W
7162 7581 R Active power L3 max W
7164 7582 R Reactive power L1 min var
7166 7583 R Reactive power L1 max var
7168 7584 R Reactive power L2 min var
7170 7585 R Reactive power L2 max var
7172 7586 R Reactive power L3 min var
7174 7587 R Reactive power L3 max var
7176 7588 R Apparent power L1 min VA
7178 7589 R Apparent power L1 max VA
7180 7590 R Apparent power L2 min VA
7182 7591 R Apparent power L2 max VA
7184 7592 R Apparent power L3 min VA
7186 7593 R Apparent power L3 max VA
7188 7594 R Power factor (PF) L1 min ­7190 7595 R Power factor (PF) L1 max ­7192 7596 R Power factor (PF) L2 min ­7194 7597 R Power factor (PF) L2 max ­7196 7598 R Power factor (PF) L3 min ­7198 7599 R Power factor (PF) L3 max ­7200 7600 R Reactive to active power ratio L1 min ­7202 7601 R Reactive to active power ratio L1 max ­7204 7602 R Reactive to active power ratio L2 min ­7206 7603 R Reactive to active power ratio L2 max ­7208 7604 R Reactive to active power ratio L3 min ­7210 7605 R Reactive to active power ratio L3 max ­7212 7606 R Phase-to-phase voltage L

1-2

min V

7214 7607 R Phase-to-phase voltage L

1-2

max V

7216 7608 R Phase-to-phase voltage L

2-3

min V

7218 7609 R Phase-to-phase voltage L

2-3

max V

ND10-07/1 User's manual

23

7220 7610 R Phase-to-phase voltage L

3-1

min V

7222 7611 R Phase-to-phase voltage L

3-1

max V
7224 7612 R Mean 3-phase voltage (min) V
7226 7613 R Mean 3-phase voltage (max) V
7228 7614 R Mean 3-phase current (min) A
7230 7615 R Mean 3-phase current (max) A
7232 7616 R 3-phase active power (min) W
7234 7617 R 3-phase active power (max) W
7236 7618 R 3-phase reactive power (min) var
7238 7619 R 3-phase reactive power (max) var
7240 7620 R 3-phase apparent power (min) VA
7242 7621 R 3-phase apparent power (max) VA
7244 7622 R Power factor (PF) min ­7246 7623 R Power factor (PF) max ­7248 7624 R Reactive to active power ratio (3-phase mean min.) ­7250 7625 R Reactive to active power ratio (3-phase mean max.) ­7252 7626 R Frequency min Hz
7254 7627 R Frequency max Hz
7256 7628 R Mean phase-to-phase voltage (min.) V
7258 7629 R Mean phase-to-phase voltage (max.) V
7260 7630 R Active power, 3-phase, 15, 30, 60 minutes (min.) W
7262 7631 R Active power, 3-phase, 15, 30, 60 minutes (max.) W
7264 7632 R harmonic U1 / THD U1 min V / %
7266 7633 R harmonic U1 / THD U1 max V / %
7268 7634 R harmonic U2 / THD U2 min V / %
7270 7635 R harmonic U2 / THD U2 max V / %
7272 7636 R harmonic U3 / THD U3 min V / %
7274 7637 R harmonic U3 / THD U3 max V / %
7276 7638 R harmonic I1 / THD I1 min A / %
7278 7639 R harmonic I1 / THD I1 max A / %
7280 7640 R harmonic I2 / THD I2 min A / %
7282 7641 R harmonic I2 / THD I2 max A / %
7284 7642 R harmonic I3 / THD I3 min A / %
7286 7643 R harmonic I3 / THD I3 max A / %
7288 7644 R Cos of U1 and I1 angle (min.) ­7290 7645 R Cos of U1 and I1 angle (max.)
7292 7646 R Cos of U2 and I2 angle (min.) ­7294 7647 R Cos of U2 and I2 angle (max.) ­7296 7648 R Cos of U3 and I3 angle (min.) ­7298 7649 R Cos of U3 i I3 angle (max.) ­7300 7650 R Mean 3-phase cos (min.) ­7302 7651 R Mean 3-phase cos (max.) ­7304 7652 R U1 and I1 angle (min.) °
7306 7653 R U1 and I1 angle (max.) °
7308 7654 R U2 and I2 angle (min.) °
7310 7655 R U2 and I2 angle (max.) °
7312 7656 R U3 and I3 angle (min.) °
7314 7657 R U3 and I3 angle (max.) °
7316 7658 R Neutral wire current (min.) A
7318 7659 R Neutral wire current (max.) A

When lower limit is exceeded, a -1e20 value is displayed. Conversely, when upper limit is exceeded,
a 1e20 value is displayed.

ND10-07/1 User's manual

24

9 ERROR CODES

During the meter operation, error messages may be displayed. Following list shows causes of
particular errors.

- Err1 – too low voltage or current during measurement:

- PFi, tgϕi, cos, THD less than 10% Un,

- PFi, tgϕi, cos less than 1% In,

- THD less than 10% In,

- f less than 10% Un,

.

- I

(N),

less than 10% In;

- bAd Freq – during THD measurement, when frequency value is outside 48 – 52 Hz range for 50Hz
and outside 58 – 62 Hz range for 60 Hz;

- Err bat – internal RTC battery. The measurement is carried out after switching the supply on and
every day at midnight. Then the message may be turned off by pressing the button.

Then the message will be inactive until the meter is turned off and on again;

- Err CAL, Err EE – meter memory damaged. In such case meter should be sent back to the
manufacturer.

- Err PAr – incorrect operational parameters of the meter. In such case meter should be set to default
(factory) settings (from menu or via RS-485 interface). Message can be disabled by pressing

button.

- Err Enrg – incorrect energy parameters. Message can be disabled by pressing button .
Incorrect energy values are set to 0.

- Err L3 L2 – phase sequence error. Switch phase 2 and phase 3 connections. Message may be
disabled by pressing the button. Then the message will be inactive until the meter is

turned off and on again;

- ____– lower limit exceeded. Measured value is lower that the lower measuring limit for a given
quantity.

-

____

________

____

– upper limit exceeded. Measured value is higher that the upper measuring limit for a given

quantity or measurement error occurred.

10 TECHNICAL DATA

Measuring ranges and allowed base errors Table 11

Measured
quantity

Indication range * Measurement

range

L1 L2 L3 ∑ Base error

Current In 1 A

5 A

0,00 ... 1.5 kA
0,00 ... 60 kA

0,005 ... 1,200 A~
0,025 ... 6.000 A~

• • • ±0,2% rng

L-N voltage

57.7 V
230 V
290 V

0,0 ... 230.8 kV
0,0 ... 1.012 MV
0,0 ... 1.200 MV

50 ... 64 V~
195 ... 253 V~
246 ... 300 V~

• • • ±0,2% in.m

L-L voltage

100 V

400 V
500 V

0.0 ... 440 kV

0.0 ... 1.752 MV

0.0 ... 2.000 MV

85 ... 110 V~
340 ... 440 V~
425 ... 520 V~

• • • ±0,5% m.q.

Frequency 47.0 ... 63.0 Hz 47,0 ... 63.0 Hz

• • • ±0,2%

m.q.

Active power -9999 MW ...0,00 W -1,52 kW ...1,0

• • • • ±0,5% rng

ND10-07/1 User's manual

25

... 9999 MW W ... 1,52 kW

Reactive power -9999 Mvar ...0,00 var

... 9999 Mvar

-1,52 kvar ...1,0
var ... 1,52 kvar

• • • • ±0,5% rng

Apparent
power

0,00 VA ... 9999 MVA 1,0 VA ... 1,52 kVA

• • • • ±0,5% rng

PF factor -1 ... 0 ... 1 -1 ... 0 ... 1

• • • • ±1 % rng

Tangent ϕ

-1.2 ... 0 ... 1.2 -1,2 ... 0 ... 1.2

• • • • ±1 % rng

Cosine ϕ

-1 ... 1 -1 ... 1

• • • • ±1 % rng

ϕ

-180 ... 180 -180 ... 180

• • • ±0.5 % rng
Active input
energy

0 ...99 999 999.9 kWh

• ±0.5 % rng

Active output
energy

0 ...99 999 999.9 kWh

• ± 0,5 % rng

Reactive
energy

0...99 999 999,9 kVarh

• ± 0,5 % rng

Reactive
energy

0...99 999 999,9 kVarh

• ± 0,5 % rng

THD 0...100% 0...100 %

• • • ± 5 % rng

*Depending on the setting of tr_U (voltage transformer ratio: 0.1 ... 4000.0
and tr_I (current transformer ratio: 1 ... 10000)

m.q. - error in relation to measured quantity
rng - error relevant to range value

Caution! Correct measurement requires L3 phase voltage higher than 0.85 Un.
Power consumption:

- in L1 and L2 voltage circuit ≤ 0,05 VA

- in L3 voltage circuit ≤ 3 VA

- in current circuits ≤ 0,05 VA

Display dedicated 3.5” LCD display,
Relay outputs 2 relays, volt-free NO contacts

current capacity 250 V~/ 0,5 A~ (a.c.)

Serial interface /optional/ RS485: address 1..247

mode: 8N2, 8E1, 8O1,8N1
baud rate: 4.8, 9.6, 19.2, 38,4 kbit/s
transmission protocol: Modbus RTU
response time: 750 ms

Energy impulse output OC (NPN) output, class A passive, compliant with EN

62053-31; supply voltage 18...27V, current 10...27mA

ND10-07/1 User's manual

26

Pulsing constant of OC output 5000 - 20000 pulses/kWh

independently of set tr_U, tr_I ratios

Protection grade of the casing

from the front IP 65
from behind the panel IP 20

Weight 0.3 kg
Dimensions 96 x 96 x 77 mm

Reference and rated operating conditions

- supply voltage /in L3 phase measurement circuit/:
50 .. 64 V a.c. or 195 .. 253 V a.c. or 246 .. 300 V a.c.

47 ...63 Hz

- input signal: 0 .. 0,005..1,2I

n

for current; 0,85..1,1Un for voltage;

0 .. 0,01..1,2In; 0..0,85..1,1Un; for factors PFi ,tϕ

i

frequency 47..63 Hz; sinusoidal ( THD ≤ 8% )

- power factor -1...0...1

- ambient working temperature -20..23..+55 °C

- storage temperature -30..+70 °C

- humidity 25 ... 95 % (no condensation)

- max peak factor:

- current 2

- voltage 2

– external magnetic field 0...40

...400 A/m

- short-term overload (5 s)
voltage inputs 2 Un
current inputs 10 In

- working position any

- warm-up time 5 min.

Real time clock battery: CR2032
Additional errors:

in % of the base error

− from input signal frequency < 50%

− from ambient temperature changes < 50 % / 10 °C

− for THD > 8% < 100 %

ND10-07/1 User's manual

27

ND10 meter complies with following standards:
Electromagnetic compatibility:

− interference immunity acc. to EN 61000-6-2

− interference emission acc. to EN 61000-6-4

Safety requirements:

acc. to EN 61010-1

• circuit-to-circuit insulation: basic,

• installation category III,

• pollution level 2,

• max working voltage in reference to ground:

− for power and measurement circuits: 300 V

− for remaining circuits: 50 V

• altitude a.s.l. < 2000 m,

ND10-07/1 User's manual

28

11 ORDERING CODES

ND10 network parameters meter ordering codes. Table 12

ND10 NETWORK PARAMETERS METER X X X XX X X

Current input In :

1A ( X/1 ) 1
5A ( X/5 ) 2

Voltage input (phase/phase-to-phase) U

n:

3x 57.7 / 100 V 1
3x 230 / 400 V 2
3x 290 / 500 V 3

Digital input:

wihout RS485 interface 0
with RS485 interface 1

Version:

standard 00
custom-made* XX

Language

Polish P
English E
Other X

Acceptance tests

without extra quality requirements 0
with an extra quality inspection certificate 1
acc. to customer's request* X

* after agreeing with the manufacturer

ORDERING CODE EXAMPLE: code ND10-2.2.1.00.E.1 means a meter with input range of 5 A,
3x 230/400 V, with RS485 interface, standard version, English language, with an extra quality

inspection certificate.

52

ND10-09/1

Lubuskie Zak³ady Aparatów Elektrycznych LUMEL S.A.

ul. Sulechowska 1, 65-022 Zielona Góra, Poland

Tel.: [phone] (exchange)
Fax: [phone]
e-mail:[email protected]
http://www.lumel.com.pl

Export Department:
Tel.: [phone]
Fax: [phone]
e-mail: [email protected]