CIRCUTOR CVM-BD User Manual
SUPPLY NETWORK ANALYZERS
CVM-BD-420-4 & CVM-BD-420-8
SERIES
INSTRUCTION MANUAL
( M98132301-20 / 03A )
(c)
CIRCUTOR S.A.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 1
CVM-BD-420-4 & CVM-BD-420-8 SUPPLY NETWORK ANALYZERS
Page
1.- BASIC INSTRUCTIONS ............................................ 2
1.1.- Delivery spot check ......................................... 2
1.2.- Connection procedures .................................... 2
1.3.- CVM-BD-420 types ........................................ 3
2.- MAIN CHARACTERISTICS ....................................... 3
2.1.- Other characteristics ........................................ 6
3.- INSTALLATION AND STARTUP ................................ 6
3.1.- Installation ..................................................... 7
3.2.- CVM-BD-420-.. connection terminal ................... 9
3.3.- Connection drawing for the CVM-BD-420-.. ....... 10
4.- OPERATION MODE ................................................. 14
5.- SETUP .................................................................. 16
5.1.- Phase-to-Phase or Phase-to-Neutral voltages 16
5.2.- Voltage Transformer Primary ............................. 17
5.3.- Voltage Transformer Secondary ........................ 18
5.4.- Current Transformer Primary.............................. 18
5.5.- Parameter SETUP............................................. 19
5.6.- First Page SETUP............................................. 22
5.7.- Maximum power demand ................................. 23
5.8.- TIME / DATE SETUP......................................... 24
5.9.- Clearing Energy Counters ................................. 25
5.10.- 4 - 20 mA Type outputs................................. 26
6.- SPECIFICATIONS.................................................... 29
7.- SAFETY CONSIDERATIONS ..................................... 30
8.- MAINTENANCE ...................................................... 31
9.- TECHNICAL SERVICE ............................................. 31
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 2
1.- BASIC INSTRUCTIONS
1.1.- Delivery spot check
This manual is issued to help all the CVM-BD-420-4 & CVM-BD-420-8 users to install
and use it in order to get the best from it. After receiving the unit please check the
following points:
(a) Does this device corresponds to your order specifications?
(b) Check if any damage was done during the shipment process.
(c) Verify that it includes *One instruction manual .
1.2.- Connection procedures
Before connecting the instrument to the mains verify the following:
(a) Power supply :
230 V a.c. Power supply Va.c. ( Single phase )
Frequency: 50 ... 60 Hz
(b) Maximum measuring voltage:
Standard : 500 V a.c. phase-neutral / 866 V a.c. between phases
A special model for 110 V measuring is available:
100 V a.c. phase-neutral / 173 V a.c. between phases
(c) Maximum measuring current: Transformer of In / 5 A a.c.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 3
1.3.- CVM-BD-420 types
Two CVM-BD-420 types are available according to the number of analog outputs
that the analyzer equips:
Code Type Features
7 70 262 CVM-BD-420-4 4C + 4 analog outputs + display
7 70 263 CVM-BD-420-8 4C + 8 analog outputs + display
2.- MAIN CHARACTERISTICS
The CVM-BD-420-4 & CVM-BD-420-8 power meters are programmable measuring
instruments, offering several operation possibilities selectable in their SETUP option.
Before power supplying the instrument, read the CONNECTIONS and SETUP
sections and choose the most suitable operation mode for getting your desired data.
4 or 8 user-programmable analog outputs are available. (Section 5.10)
The CVM-BD-420-.. 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 analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 4
By means of an internal microprocessor it simultaneously measures:
Parameter L1 L2 L3 Average Addition
Voltage (phase-neutral) x x x x
Voltage (phase-phase) x x x x
Current x x x x
Active power x x x X
Reactive power L x x x X
Reactive power C x x x X
Power factor x x x x
Apparent power X
Frequency x
Parameter CVM-BD-420-..
Date/Time dd/mm/yy hh:mm:ss TIME
Active energy ( two indep. meters: demanded energy (+)
and generated energy (--) )
Reactive energy (inductive), two indep. meters kvarh.L (+) and (--)
Reactive energy (capacitive), two indep. meters kvarh.C (+) and (--)
---------------------------------------------------
The CVM-BD-420-.. allows reading up to 54 electrical parameters in 18 screens,
shown in a three line numerical display, where you can see:
(a) Phase-phase or phase-neutral voltage of the three phases
(b) 51 user-selectable parameters according to the model (see
attached table)
kWh (+) and (--)
And also the MAXIMUM POWER DEMAND: The power demand is integrated
during a prefixed period.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 5
You can select:
a) The parameter to be controlled (it can measure active power kW,
apparent power kVA or three phase average current AIII).
b) The demand period (1 to 60 min.).
This power demand function works with sliding window : shows the accumulated
demand over the last period from "now".
---------------------------------------------------------------------------------------------
The CVM-BD-420-.. is a 4 quadrant analyzer, that is, this can automatically
detect the energy sign:
Example of the
phase difference
between voltage
and current
30º kW + kvar L + +
300º kW + kvar C + --
210º kW -- kvar L -- +
120º kW -- kvar C -- --
Active power
kW or kW.h
Reactive power
kvar or kvar.h
P.F.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 6
2.1- Other Characteristics
- DIN rail mounting device with low dimensions.
- True RMS value measurements.
- 4 or 8 user-programmable analog inputs.
- Measurements in all four quadrants (equivalent to CVMk-4C ).
- Power demand control.
- Memorizes Maximum and Minimum values.
- Two leds for indication of CPU and communication operation
- Incorporates the calculation of the harmonic distortion.
3.- INSTALLATION AND STARTUP
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.
Whether 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.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 7
3.1.- INSTALLATION
Before applying AC power to the, check following points :
a.- Supply voltage :
- Power supply V a.c. ( Single phase ) 50 ...60 Hz
230 V a.c.
- Frequency : 50 ... 60 Hz
- Supply tolerance : + 10 % / --15 %
- Connection terminals : Terminals 1 - 28
- Instrument burden : 6 VA
b.- Maximum voltage at the voltage measuring circuit:
Standard : 500 V a.c. phase-neutral / 866 V a.c. between phases
A special model CVM-BD-420-4 & CVM-BD-420-8 for 110 V measur ement is
also available:
100 V a.c. phase-neutral / 173 V a.c. between phases
c.- Maximum admissible current : Transformer of In / 5 A a.c.
d.- Operation conditions :
- Operating temperature : 0 to 50ºC
- Humidity : 25 to 80 % R.H. non-condensing
e.- Safety : Designed to meet protection class II as per EN 61010.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 8
Mounting:
Instrument is to be mounted on DIN rail mounting device with low dimensions.
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 an automatic switch or any equivalent element to disconnect 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.
-- Supply network analyzers CVM-BD-420-4 & CVM-BD-420-8 -- M98132301-20 --- Page Nº 9
3.2.- CVM-BD-420-.. Connection terminal
Terminal No Designation Concept
1 - 28 A1 - A2 supply voltage : 230 V a.c.
17 Out 1 4-20 mA type output 1
18 Out 2 4-20 mA type output 2
19 GND Ground
20 Out 3 4-20 mA type output 3
21 Out 4 4-20 mA type output 4
22 Out 5 4-20 mA type output 5
23 Out 6 4-20 mA type output 6
24 GND Ground
25 Out 7 4-20 mA type output 7
26 Out 8 4-20 mA type output 8
15 N NEUTRAL
14 VL3 Voltage phase 3
13 VL2 Voltage phase 2
12 VL1 Voltage phase 1
11 - 10 I L3: s1 - s2 Current phase L3 .../ 5 A
9 - 8 I L2: s1 - s2 Current phase L2 .../ 5 A
7 - 6 I L1: s1 - s2 Current phase L1 .../ 5 A
NOTE: Current inputs are isolated
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