CIRCUTOR CVM144 User Manual

SUPPLY NETWORK ANALYZER

CVM-144

(Ver 6.11 and higher)

SERIES

INSTRUCTION MANUAL

( M98170101-03 / 03C)



CIRCUTOR S.A.

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 1

CONTENTS page

1.- DELIVERY SPOT CHECK .......................................................................................................... 2

2.- MAIN FEATURES ....................................................................................................................... 3

3.- MODELS ..................................................................................................................................... 5

4.- INSTALLATION AND START-UP............................................................................................... 6

4.1.- Installation. .................................................................................................................... 6

4.2.- CVM-144 connection terminal arrangement (power supply connection terminal) ............................. 8

4.3.- CVM-144 connection terminal arrangement (Expansion card) ..................................... 9

4.4.- Connection drawing for the CVM-144 : ....................................................................... 14

5.- OPERATION MODE ................................................................................................................. 18

6.- SET-UP PROCEDURE ............................................................................................................. 20

6.1.- Phase-to-Phase or Phase-to-Neutral voltages ............................................................ 21

6.2.- Voltage display mode .................................................................................................. 21

6.3.- Voltage transformation ratio ........................................................................................ 22

6.4.- Current Transformer Primary ...................................................................................... 23

6.5.- Transformation ratio for the measurement of neutral and residual current................. 24

6.6.- Setting power demand utility screens.......................................................................... 26

6.7.- Initial screen setting..................................................................................................... 27

6.8.- Setting of the display shutdown time........................................................................... 27

6.9.- Clearing energy counters ............................................................................................ 28

6.10.- THD or D setting........................................................................................................ 29

6.11.- Additional screens when RELAY OUTPUTS (2 relays) are equipped ...................... 30

6.12.- Additional screens with 4 - 20 mA outputs y inputs ................................................... 37

7.- SPECIFICATIONS .................................................................................................................... 42

8.- SAFETY CONSIDERATIONS................................................................................................... 44

9.- MAINTENANCE ........................................................................................................................ 44

10.- TECHNICAL SERVICE ............................................................................................................. 44

11.- CVM-144 COMMUNICATIONS ................................................................................................ 45

11.1.- To take into account !: .............................................................................................. 45

11.2.- RS-485 type connection to a RS-232 type input of a PC .......................................... 46

11.3.- RS-232 type connection to a RS-232 type input of a PC .......................................... 47

11.4.- MODBUS © protocol ................................................................................................ 48

12.- APPENDIX A: Second SET-UP of the CVM-144 ..................................................................... 54

12.1.- Communication setting.............................................................................................. 54

12.2.- SET-UP locking or unlocking .................................................................................... 55

13.- APPENDIX B: Insertion of an expansion module into a CVM-144 unit..................................... 56

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 2

1.- DELIVERY SPOT CHECK

This manual is issued to help all the CVM-144 (Version 6.11 and higher) users

to install and use it in order get the best from it. After receiving the unit, please check
the following points:

(a) Does this device correspond to your order specifications?

(b) Check if any damage was done during the shipment process.

(c) Verify that it includes the correct instruction manual.

The manual you hold in your hands contains information and warnings
about the CVM-144 that the user should respect in order to guarantee
a proper operation of all the instrument functions and keep its safety
conditions.

Before powering the instrument for the first time, verify following points:

(a)

Power supply: see rear part of your CVM-144

 Standard: 230 V a.c. Single-phase, Frequency: 50 ... 60 Hz

 SDC Model : 24 .... 120 V c.c.

 Other supply voltages, on request.

(b) Maximum measuring voltage:

 Standard: 300 V a.c. phase-neutral / 520 V a.c. between phases

 Other models: on request

CVM144 - measuring 110V: 110 V a.c. phase-to-neutral /190 V a.c. phase-to-phase
CVM144 - measuring 500V: 500 V a.c. phase-to-neutral /866 V a.c. phase-to-phase

(c) Maximum measurable current: Current transformer of In / 5 A a.c.

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 3

2.- MAIN FEATURES

The CVM-144 power meter is a programmable measuring instrument, offering

several operation possibilities selectable in its SET-UP option. Before power
supplying the instrument, read the CONNECTIONS and SET-UP sections and
choose the most suitable operation mode for getting your desired data.

reset

The CVM-144 is an instrument which measures, calculates and displays all
the main electrical parameters at any electrical network (balanced or not). The
measuring is true RMS value, through three a.c. voltage inputs and three a.c. current
inputs (from Current Transformers .../ 5A).

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 4

By means of an internal microprocessor it simultaneously measures:

Parameter Symbol L1 L2 L3 Average

Voltage (phase-neutral) V x x x
Voltage (phase-phase) V x x x
Current A x x x xx
Frequency Hz x
Active power kW x x x x
Reactive power L kvarL x x x x
Reactive power C

kvarL /(-C)

x x x x

Apparent power kVA xx
Power factor PF x x x x

Cos ϕ

xx
Power demand Pd x
kW h energy x
kvarhL energy x
kvarhC energy x
Neutral current IN x
Voltage THD % THD- V x x x
Current THD % THD- A x x x
Individual harmonic

current content (Up to the 15

th

)

xx xx xx

Analog inputs Input xx
Earth leakage (residual) current

Available: x: Display and communications xx: Communications

x

The CVM-144 delivers the visualization of above listed parameters by means
of three 4-digit, led type, displays. Up to 3 parameters can be simultaneously read in
the screen.

---------------------------------------------------------------------------------------------

OTHER FEATURES

- Low-size (144 x 144 mm), panel-mounting analyzer.

- True R.M.S. measuring system.

- Collection in memory of maximum and minimum values.

- Energy measurement (indication through a lighting led)

- RS-485 or RS-232 type communication to a PC (optional)

- Maximum demand determination: kW, kVA, AIII or line-current.

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 5

3.- MODELS

Code Model

Current
measurement

7 70 551 CVM-144 Shunts
7 70 552 CVM-144-ITF Isolated ITF

Code Expansion modules Card

7 70 570 Mod. CVM 144 C2 2
7 70 571 Mod. CVM 144 C2 Analogue 0571 2
7 70 572 Mod. CVM 144 C2-Currents 0572 2
7 70 569 Mod. CVM 144 C2 Digital 2 4
7 70 573 Mod. CVM 144 RS485-C2 0573 RS485 2
7 70 574 Mod. CVM 144 RS485-C2 Analogue 0574 RS485 2
7 70 575 Mod. CVM 144 RS485-C2-Currents 0575 RS485 2
7 70 579 Mod. CVM 144 RS485-C2 Digital 0579 RS485 2 4
7 70 576 Mod. CVM 144 RS232-C2 0576 RS232 2
7 70 577 Mod. CVM 144 RS232-C2 Analogue 0577 RS232 2
7 70 578 Mod. CVM 144 RS232-C2-Currents 0578 RS232 2
7 70 580 Mod. CVM 144 RS232-C2 Digital 0580 RS232 2 4

Communication

Relay outputs

Optionally 2 analog inputs and 2 analog outputs.

Digital inputs

Analogue inputs

3*

3*

3*

Analogue outputs

Measurement of

neutral and residual

currents

1*

X

1*

X

1*

X

Code Complete Kit Communications

7 70 591 CVM-144-ITF-RS485-C2 RS-485 2 Isolated ITF

Relay

Outputs

Current

inputs

Each CVM 144 supports as a maximum 1 expansion module

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 6

4.- INSTALLATION AND START-UP

The manual you hold in your hands contains information and warnings
that the user should respect in order to guarantee a proper operation
of all the instrument functions and keep its safety conditions. The
instrument must not be powered and used until its definitive assembly
on the cabinet’s door.

If the instrument is not used as manufacturer’s specifications, the

protection of the instrument can be damaged.

When any protection failure is suspected to exist (for example, it presents
external visible damages), the instrument must be immediately powered off. In this
case contact a qualified service representative.

4.1.- Installation.

Before powering the instrument for the first time, verify following points:

a.- Power supply: see rear part of your CVM-144

 Standard supply : Single-phase 230 V ∼ (a.c.)

- Frequency : 50 - 60 Hz

- Supply voltage tolerance : - 10 % / + 15

- Connection terminal : Terminals 1 - 2 (Power supply)

- Burden : 5 VA

 SDC Model : 0.24.... 120 V c.c. ( continua )

- Supply voltage tolerance : - 20 % / + 15

- Connection terminal : Terminals 1 - 2 (Power supply)

- Burden : 2,2 W

 On request: other voltages

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 7

b.-Maximum voltage at the voltage measuring circuit:

 Standard : 300 V a.c. phase-to-neutral/520 V a.c. phase-to-phase

45 to 65 Hz

 Other models on request :

CVM-144-measuring 500 V: 500 Va.c. phase-to-neutral/866 Va.c. phase-to-phase
CVM-144-measuring 110 V: 110 Va.c. phase-to-neutral/190 Va.c. phase-to-phase

c.- Maximum allowable current : Current Transformer of In / 5 A a.c.

d.- Operation conditions :

- Operation temperature range : -10 to +50 ºC

- Humidity : 5 to 95 % R.H. non-condensing

- Altitude : below 2000 m

e.- Safety :

- Designed to meet protection class III- 300 V a.c. as (EN 61010).

- Protection against electric shock by class II double-isolation

Mounting:

+1

Instrument is to be mounted on panel (cut-out 138

x 138+1 mm, as per DIN

43 700). All connections keep inside the cabinet.

Note that with the instrument powered on, the terminals could be dangerous to
touching and cover opening actions or elements removal may allow accessing
dangerous parts. Therefore, the instrument must not be used until this is completely
installed.

The instrument must be connected to a power supply circuit protected with gl
type (IEC 269 ) or M type fuses rated between 0.5 and 2 A. This circuit should be
provided with a circuit breaker or any equivalent element to connect (ON) or
disconnect (OFF) the instrument from the power supply network. The supply and
measuring voltage circuits will be both connected through a wire with a minimum
cross-section of 1 mm2.

The line of the current transformer secondary will have a minimum cross­section of 2,5 mm2.

P-NP

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 8

4.2.- CVM-144 connection terminal arrangement (power supply connection terminal)

(see lable on the rear part)

300 V

P2 P1L3P2 P1

L2

56

83

7

-P

300V

NL1VL2VV

9

520V

L3

CAT III

230 V

Power Supply

12

5A

I

n

/

P2

P1

L1

S2 S1 S2 S1 S2 S1

4101112

No. Terminal description No. Terminal description

1
2
3
4
5
6

*Power supply AL1
*Power supply AL2
IL1 S2 Current measurement
IL1 S1 Current measurement
IL2 S2 Current measurement
IL2 S1 Current measurement

7

IL3 S2 Current measurement

8

IL3 S1 Current measurement

9

Neutral

10

VL1 Measurement

11

VL2 Measurement

12

VL3 Measurement

NOTE: Terminals 3, 5, 7 are internally connected to the 9 terminal (Neutral)

... / 5 A current inputs are isolated for the ITF model.

* Lower connection terminal (SDC Model)

Nº Descripción Borne

1 2 Supply voltage (+) d.c.

Supply voltage (-) d.c.

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 9

4.3.- CVM-144 connection terminal arrangement (Expansion card)

(see lable on the rear part)

4.3.1.- Basic card (770 570, 770 573 and 770 576)

Description Card connection terminal arrangement

Mod CVM 144 -C2

(Code: 7 70 570)

Mod CVM 144 RS485-C2

(Code: 7 70 573)

Mod CVM 144 RS232-C2

(Code: 7 70 576)

Mod CVM 144 -C2
(Código: 770 570)

No Terminal

Mod CVM 144 RS485-C2

Mod CVM 144 RS232-C2

(Código: 770 573)

No Terminal description No Terminal description

description

13

No used

14

No used

15

No used

16

No used

17

No used

18

No used

19

No used

20

No used

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

13

14
15
16
17
18
19
20
21
22
23
24

No used
No used
No used
No used
No used
RS-485 ( GND )
RS-485 ( - )
RS-485 ( + )
Relay RL2 output
Relay RL2 common
Relay RL1 output
Relay RL1 common

13
14
15
16
17
18
19
20
21
22
23
24

(Código: 770 576)

No used
No used
No used
No used
No used
RS-232 ( GND )
RS-232 (Rx)
RS-232 (Tx)
Relay RL2 output
Relay RL2 common
Relay RL1 output
Relay RL1 common

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 10

4.3.2.- Card for analog Inputs/Outputs (7 70 571, 7 70574 and 7 70577)

Description Card connection terminal arrangement

Mod CVM 144 -C2-Analogue

(Code: 7 70 571)

Mod CVM 144 RS485-C2-Analogue

(Code: 7 70 574)

Mod CVM 144 RS232-C2-Analogue

(Code: 7 70 577)

Mod CVM 144

C2-Analogue

(Code: 7 70 571)

Mod CVM 144

RS485-C2-Analogue

(Code: 7 70 574)

Mod CVM 144

RS232-C2-Analogue

(Code: 7 70 577)

Nº Terminal description Nº Terminal description Nº Terminal description

13

4-20 mA I/O common

14

4-20 mA D/A1 output

15

4-20 mA A/D3 input

16

4-20 mA A/D2 input

17

4-20 mA A/D1 input

18

No used

19

No used

20

No used

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

13

14
15
16
17
18
19
20
21
22
23
24

4-20 mA I/O common
4-20 mA D/A1 output
4-20 mA A/D3 input
4-20 mA A/D2 input
4-20 mA A/D1 input
RS-485 (GND)
RS-485 ( - )
RS-485 ( + )
Relay RL2 output
Relay RL2 common
Relay RL1 output
Relay RL1 common

13

4-20 mA I/O common

14

4-20 mA D/A1 output

15

4-20 mA A/D3 input

16

4-20 mA A/D2 input

17

4-20 mA A/D1 input

18

RS-232 ( GND)

19

RS-232 ( Rx )

20

RS-232 ( Tx )

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 11

4.3.3.- Module for residual and neutral currents (770 572, 770 575 and 770578)

Description Lable in the expansion module connection terminal

13 14 15

Mod CVM 144 -C2-Currents

17 18 19 20

16

21 22

RL2

23 24

RL1

(Code: 7 70 572)

Mod CVM 144 RS485-C2-Currents

(Code: 7 70 575)

Mod CVM 144 RS232-C2-Currents

(Code: 7 70 578)

13 14 15

13 14 15

N

17 18 19 20

16

GND

I

N

17 18 19 20

16

I

N

(+)(-)

RS 485

250 V 3 A

21 22

250 V 3 A

21 22

RL2

250 V 3 A

23 24

RL1RL2

23 24

RL1

I

Mod CVM 144

C2-Currents

(Code: 7 70 572)

Mod CVM 144

RS485-C2-Currents

(Code: 7 70 575)

Mod CVM 144

RS232-C2-Currents

(Code: 7 70 578)

Nº Terminal description Nº Terminal description Nº Terminal description

13

Measur. residual current S1

14

Measur. residual current S2

15

Measur. residual current S2

16

Measur. neutral current S1

17

Measur. neutral current S2

18

Not used

19

Not used

20

Not used

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

(30 A)

(3 A)

13

14

15

16
17
18
19
20
21
22
23
24

Measur. residual current S1
Measur. residual current S2

(30 A)

Measur. residual current S2

(3 A)

Measur. neutral current S1
Measur. neutral current S2

RS-485 ( GND )
RS-485 ( - )
RS-485 ( + )
Relay RL2 output
Relay RL2 common
Relay RL1 output
Relay RL1 common

13

Measur. residual current S1

14

Measur. residual current S2

15

Measur. residual current S2

16

Measur. neutral current S1

17

Measur. neutral current S2

18

RS-232 ( GND )

19

RS-232 ( Rx )

20

RS-232 ( Tx )

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

(30 A)

(3 A)

Notes:

• For the measurement of the residual current (earth leakage current), the use of

transformers of the WG xx series is required. These transformers can be connected
to the 3 A or 30 A rated input, depending on the needed measuring range.

• For the measurement of the neutral current, the use of .../5A current transformers is

required.

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 12

• Connection diagram of the WG transformer (for residual current purposes)

One single WG series transformer
can be use for the measurement of
residual currents within the range to
3 A or to 30 A, jut depending on the
arranged connection diagram.

The current input used for the

2S2
2S1

1S2
1S1

residual current measurement must
agree with the input selected in the
pertinent a Setup section (6.5.-)

The appropriate connection mode
to execute the measurement of the
residual current with the CVM-144 is
shown in the below tables:

Measurement of residual current with a maximum value of 3 A (30 mA ... 3 A)

WG Transformer Mod CVM 144 ... -Currents

Terminal No. Description Terminal No. Description

1S1
1S2
2S1
2S2

Measuring winding S1
Measuring winding S2

Not used
Not used

13
15

Residual current measur. S1
Residual current measur. S2

(3 A)

Measurement of residual current with a maximum value of 30 A (300 mA ... 30 A)

WG Transformer Mod CVM 144 ... -Currents

Terminal No. Description Terminal No. Description

1S1
1S2
2S1
2S2

Measuring winding S1
Measuring winding S2

Not used
Not used

13
14

Residual current measur. S1
Residual current measur. S2

(30 A)

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 13

4.3.4.- Card for digital Inputs (7 70 579 and 7 70580)

Description Card connection terminal arrangement

Mod CVM 144 -C2-Digital

(Code: 770 569)

Mod CVM 144 RS485-C2-Digital

(Code: 7 70 579)

Mod CVM 144 RS232-C2-Digital

(Code: 7 70 580)

Mod CVM 144

C2-Digital

(Code: 7 70 569)

No Terminal description No Terminal description No Terminal description
13

digital inputs common

14

digital input IN4

15

digital input IN3

16

digital input IN2

17

digital input IN1

18

no used

19

no used

20

no used

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

Mod CVM 144

RS485-C2-Digital

(Code: 7 70 579)

13

digital inputs common

14

digital input IN4

15

digital input IN3

16

digital input IN2

17

digital input IN1

18

RS-485 ( GND)

19

RS-485 ( - )

20

RS-485 ( + )

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

Mod CVM 144

RS232-C2-Digital

(Code: 7 70 580)

13

digital inputs common

14

digital input IN4

15

digital input IN3

16

digital input IN2

17

digital input IN1

18

RS-232 ( GND)

19

RS-232 (Rx)

20

RS-232 (Tx)

21

Relay RL2 output

22

Relay RL2 common

23

Relay RL1 output

24

Relay RL1 common

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 14

4.4.- Connection drawing for the CVM-144 :

a.- Three-phase network.- 4 wires (low voltage) :

S1

P1

P2

S2

S1

P1

P2

S2

S1

L1

L2

P1

L3

N

P2

S2

1 2 3 4 5 6 7 8 9 10 11 12

A.C. POWER SUPPLY

PowerSupply (SDC Model)

Te rm i na l

1

2

Description
+ V d.c.

- V d.c.

VL3

VL2

VL1

N

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 15

b.-Three-phase network – 3 wires (low voltage):

P2

P1

L1

S2

1 2 3 4 5 6 7 8 9 10 11 12

S1

P2

S2

S1

P1

P2

S2

L2

P1

L3

S1

A.C. POWER SUPPLY

PowerSupply (SDC Model)

Te rm i na l

1

2

Description
+ V d.c.

- V d.c.

VL3

VL2

VL1

A

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 16

c.- Three-phase network - 3 wires (2 P.T. and 3 C.T.):

S1

P1

P2

S2

S1

P1

P2

S2

S1

P1

L1

L2

L3

B

A

a

a

b

B

b

P2

S2

A

a

B

b

1 2 3 4 5 6 7 8 9 10 11 12

VL3

VL2

A.C. POWER SU PPLY

PowerSupply (SDC Model)

Ter m in al

1
2

Description
+ V d.c.

- V d.c.

VL1

A

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 17

d.- Three-phase network - 3 wires (2 P.T. and 2 C.T.):

P2

S2

P1

S1

L1

L2

S1

P1

B

A

a

a

b

L3

B

b

P2

S2

A

a

B

b

1 2 3 4 5 6 7 8 9 10 11 12

VL3

VL2

A.C. POWER SUPPLY

PowerSupply (SDC Model)

Terminal

1
2

Description
+ V d.c.

- V d.c.

VL1

IMPORTANT REMARK! If power = -0.01 is shown for any of the phases

(codes 03, 09 and 15) and voltage and current are not zero for this phase, check out
following points:

- Assure that L1, L2 and L3 phases coincide in voltage and current.

- Correct polarity? Reverse the current transformer placed at this phase.