CIRCUTOR CVM-NRG96 User Manual

Power Analyzer

CVM-NRG96

User manual

Extended version

CVM-NRG96

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.

TABLE OF CONTENTS

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.

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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

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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.

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

MAGNITUDE

Simple Voltage Compound voltage Current Frequency Active power Reactive Power L Reactive Power C Apparent Power Power Factor Cos ϕ Cos ϕ Maximum Demand Neutral Current Voltage THD Current THD 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) * %

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.

UNIT

V V A

Hz

kW

kvarL

kvarC

kVA

PF

L1 L2

• • •

•

• • •

•

• • •

•

Pd

I

N

% THD – V % THD – A

• • •

•

• • •

 ( • ) Available through display and communications.  ( •• ) Only available through communications.  ( * ) Harmonic decomposition in model HAR.

L3

•

III

••

•

15th

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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

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

CODE

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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

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

2.5 mm

2

.

+0.8

2

.

x 92

+0.8

m.m., according to

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Terminal list

3812

10141674

91361115

17

1

2 5

CVM-NRG96

No. Terminal description

1

Power supply voltage input

2

Power supply voltage input

3

Transistor output RL1

4

Transistor output RL2

RS-485 ( + )

5 6

RS-485 ( - )

7

RS-485 ( GND )

8

Measurement VL1

9

Measurement 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

Current input AL3 – S1

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.

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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.

Description

+ V DC.

- V DC.

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Power supply “Plus”

Terminal

1 2

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CVM-NRG96

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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C. Three phase system measurement with 3 wire connection using 2 transformers

and three external current transformers.

Power supply AC. // Version Plus DC.

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CVM-NRG96

D. Three phase system measurement with 3 wire connection using 2 voltage

transformers and two external current transformers.

Power supply AC. // Version Plus DC.

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