Circutor CVM-NRG96 Manual de usuario

Power Analyzer

CVM-NRG96

User manual

Extended version

CVM-NRG96

Mn_cvm-nrg_03.doc

Checks on receipt.

This manual assists in the installation and use of the CVM NRG 96 power analyzer so

that the best possible use can be gained from it. On receipt of the equipment check

the following:

The equipment corresponds to the specifications in your order.

Check that the equipment has not been damaged during delivery.

Check that it has the correct instruction manual.

For safety reasons it is essential that anyone installing or

handling the CVM NRG 96 follow the usual safety procedures

as well as the specific warnings in this instruction manual.

Installing and maintenance for this analyzer must be carried

out by a qualified person.

TABLE OF CONTENTS

CVM-NRG96

Mn_cvm-nrg_03.doc

General features ……………… page 4

Installation and start-up ……………… page 6

Power supply voltage ……………… page 6

Maximum voltage in the measurement circuit ……………… page 7

Maximum admissible current ……………… page 7

Features of the transistor ……………… page 7

Operating conditions ……………… page 7

Safety ……………… page 7

Connection diagrams ……………… page 9

Operation ……………… page 13

Setting menus ……………… page 14

Programming SETUP Measurement ……………… page 15

Status of Setup Measurement ……………… page 15

Simple or compound voltages ……………… page 16

Transformation ratios ……………… page 16

Programming the power demand meter ……………… page 18

Programming the main page and preferred energy …..…… page 19

Backlight (Back-lighting of the display) ……………… page 20

Deletion of Energy meters ……………… page 21

Programming THD or d ……………… page 21

Transistor digital output ……………… page 22

Programming SETUP Communications ……………… page 26

Setting communication parameters ……………… page 27

Protection of SETUP measurement ……………… page 30

MODBUS protocol RTU ……………… page 31

MODBUS memory map ……………… page 32

RS485 connection ……………… page 35

FAQ’S (Frequently Asked questions) ……………… page 36

CVM-NRG96

Mn_cvm-nrg_03.doc

General features

The CVM-NRG 96 panel analyzer is a programmable measuring instrument; it offers

a series of options for using it, which may be selected from configuration menus on

the instrument itself. Before starting the analyzer carefully read sections: power

supply, connection and setting and select the most suitable form of operation in order

to obtain the required data.

The CVM-NRG 96 measures, calculates and displays the main

electrical parameters in three phase, balanced or unbalanced

industrial systems.

Measurements are taken in true effective value using the three

alternating voltage inputs and three current inputs to measure 5

A secondaries from external measurement toroids.

With its processor, the measurement station allows simultaneous analysis of:

MAGNITUDE UNIT L1 L2 L3 III

Simple Voltage V•••

Compound voltage V•••

Current A••• ••

Frequency Hz •

Active power kW ••• •

Reactive Power L kvarL ••• •

Reactive Power C kvarC ••• •

Apparent Power kVA •

Power Factor PF •••

Cos Cos •

Maximum Demand Pd •

Neutral Current IN•

Voltage THD % THD – V •••

Current THD % THD – A •••

kWh (consumption and generation)W·h •

kvarh.L (consumption and generation)W·h •

kvarh.C (consumption and generation)W·h •

kVAh (consumption and generation)W·h •

Harmonic decomposition (V and A) *%•••15th

9( • ) Available through display and communications.

9( •• ) Only available through communications.

9( * ) Harmonic decomposition in model HAR.

CVM-NRG96

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The CVM-NRG 96 allows the display of all electrical parameters shown above, using

the back-lit LCD display, showing 4 instant electrical parameters, maximum or

minimum on each page jump.

Other features:

Small sized instrument (96x96x50).

Measurement in true effective value.

Instant, maximum, minimum values for each parameter.

Energy measurer function.

- 1 GW·h in consumed energy.

- 100 MW·h in generated energy.

Backlit LCD display.

RS485 communications (Modbus RTU®) included.

Available models:

CVM-NRG96 CODE

CVM-NRG96 M51800

CVM-NRG96-ITF M51900

CVM-NRG96-ITF-RS485-C M51911

CVM-NRG96-ITF-RS485-C-HAR M51B11

CVM-NRG96-ITF-P-RS485-C M51A11

CVM-NRG96

Mn_cvm-nrg_03.doc

Installation and start-up

This manual contains information and warnings that must be followed by the user to

ensure the safe operation of the equipment and to maintain it in a safe condition. The

analyzer must not be switched on until it is finally attached to the electrical board.

IF THE EQUIPMENT IS HANDLED IN A WAY NOT SPECIFIED BY THE

MANUFACTURER, THE EQUIPMENT'S PROTECTION MAY BE COMPROMISED

When it is likely that the equipment has lost its protection (with visible damage), it

must be disconnected from the auxiliary supply. In this event, contact a qualified

technical service representative.

Installing the equipment

Check the following points before switching the equipment on:

a) Power supply voltage.

b) Maximum voltage in the measurement circuit.

c) Maximum admissible current.

d) Features of the transistor (digital output).

e) Operating conditions.

f) Safety.

A. Power supply voltage

Standard version:

- Power supply : 230 V AC.

- Frequency : 50-60 Hz

- Power supply tolerance : -15% / +10%

- Connection board : Terminals 1-2 (Power Supply)

- Consumption of the equipment : 5 V·A

Version Plus:

- Power supply : 85…265 V AC. // 95…300 V DC.

- Frequency : 50-60 Hz

- Connection board : Terminals 1-2 (Power Supply)

- Consumption of the equipment : 5 V·A

CVM-NRG96

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B. Maximum voltage in the measurement circuit:

- Voltage : 300 V AC. phase-neutral

520 V AC. phase-phase

- Frequency : 45…65 Hz

C. Maximum admissible current:

- Current : External transformers In /5A.

D. Transistor features(output):

- NPN Type : Opto-isolated Transistor /Open Collector

- Maximum operating voltage: 24 V.DC.

- Maximum operating current: 50 mA

- Maximum frequency : 5 pulses / second

- Pulse length : 100 ms

E. Operating conditions:

- Operating temperature : -10 ºC / +50ºC

- Relative humidity : 5 to 95 % HR (without condensation)

- Altitude : up to 2,000 metres

F. Safety:

- Designed for category III installations 300 V AC. (EN 61010).

- Protection against electric shock by class II double isolation.

Installation

Installation for the equipment is by panel(panel drill 92+0.8 x 92+0.8 m.m., according to

DIN 43 700). All connections must remain inside the electrical board.

Bear in mind that when the equipment is connected, the terminals may be

dangerous if touched. Opening covers or removing parts may access parts

which are dangerous if touched. The equipment must not be used until it is

fully installed.

The equipment must be connected to a power supply circuit protected with gl (IEC

269) or type M fuses between 0.5 and 2 A. It must have an overload/short circuit

switch or equivalent device in order to disconnect the equipment from the power

supply. The power supply circuit and the voltage measurement circuit is connected

with a cable with a minimum cross section of 1 mm2.

The secondary line for the current transformer shall have a minimum cross section of

2.5 mm2.

CVM-NRG96

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Terminal list

No. Terminal description

1Power supply voltage input

2Power supply voltage input

3Transistor output RL1

4Transistor output RL2

5RS-485 ( + )

6RS-485 ( - )

7RS-485 ( GND )

8Measurement VL1

9Measurement VL2

10 Measurement VL3

11 Neutral measurement

12 Current input AL1 – S2

13 Current input AL1 – S1

14 Current input AL2 – S2

15 Current input AL2 – S1

16 Current input AL3 – S2

17 Current input AL3 – S1

10 14 16

11 15 17

Note: Internally terminals 13, 15 and 17 are joined to terminal 6, Neutral (in no

isolated model).

The current inputs... / 5 A are isolated in model ITF.

CVM-NRG96

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Connection diagrams

A. Three phase system measurement with 4 wire connection (Low Voltage) and

three external current transformers.

Power supply AC. // Version Plus DC.

Power supply “Plus”

Terminal Description

+ V DC.

- V DC.

CVM-NRG96

Mn_cvm-nrg_03.doc

B. Three phase system measurement with 3 wire connection (Low Voltage) and

three external current transformers.

Power supply AC. // Version Plus DC.

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