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Summary of Contents for Circutor CAVA-252
- Page 1 ANALYZER OF POWER SUPPLY QUALITY CAVA Series (251 / 252 / 253) USER’S MANUAL ( M98120201-03-03A ) CIRCUTOR S.A.
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Page 2: Table Of Contents
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 1 CONTENTS OF THE CAVA-251 USER’S MANUAL page BASIC INSTRUCTIONS...........................2 1.1.- Check the contents of your package ......................2 1.2.- Safety conditions ............................3 1.3.- Connection instructions ..........................3 MAIN FEATURES ............................4... -
Page 3: Basic Instructions
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 2 1.- BASIC INSTRUCTIONS This manual is aimed to familiarize de user with the operation of the measuring analyzers model CAVA in order to get the best from its features. -
Page 4: Safety Conditions
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 3 1.2.- Safety conditions The manual you hold in your hands contains information and warnings about the CAVA that the user should respect in order to guarantee a proper operation of all the instrument functions and keep its safety conditions. -
Page 5: Main Features
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 4 2.- MAIN FEATURES CAVA series meters for the analysis of power supply quality are programmable instruments that measure, calculate and save in memory the main quality parameters of single-phase power systems. -
Page 6: Cava Models
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 5 - OTHER FEATURES Low size instrument. True R.M.S. measuring mode. Recording of maximum and minimum value. Led for communication indication. Led for indication of recording process state (Store on/Store off) Capture of voltage sags and voltage dropouts. -
Page 7: Variables Measured And Recorded By The Cava
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 6 4.- VARIABLES MEASURED AND RECORDED BY THE CAVA 4.1.- Instantaneous variables measured and calculated. VOLTAGE, RMS value.. t ( ) ∑ ( ) ∫ ⋅... -
Page 8: Parameters Referred Power Supply Quality
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 7 4.2.- Parameters referred Power Supply Quality 4.2.1.- Harmonics The CAVA provides the measurement of the harmonic distortion of the voltage wave. This distortion can be referred either to the fundamental amplitude (%D) or to the RMS value of the signal (%THD). -
Page 9: Voltage Sags
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 8 4.2.3.- Voltage sags Voltage sags are defined as these cases where the R.M.S. value of a voltage semicycle is lower a pre-defined voltage value. The CAVA will inform about the number of semicycles having a R.M.S. value lower than the preset value that have been detected. -
Page 10: Data Recording In Memory (Automatic Mode)
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 9 5.- DATA RECORDING IN MEMORY (Automatic mode) 5.1.- Data recording The CAVA has an on-board clock, with date and time, that permits to program the automatic data recording in memory at regular time intervals. -
Page 11: Installation And Startup
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 10 6.- 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. -
Page 12: Cava Connection Procedure
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 11 6.2.- CAVA connection procedure Supply/Measurement Clamp connector Hold / Run led Communications led Hold / Run switch RS-232 Supply/Measurement: Voltage measurement is done from the own instrument’s supply. -
Page 13: Operation Mode
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 12 7.- OPERATION MODE Before connecting the analyzer to a single-phase power system in order to record data or to transfer data to a P.C. check the “Hold/Run” switch to be at the right position. -
Page 14: Setup Procedure
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 13 7.2.- Setup procedure A correct operation of the CAVA will depend on a right setup and connection actions. Parameters to be user-programmed through the appropriate PC software are following ones: Time: Time of the on-board analyzer clock. - Page 15 ----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 14 Primary of the current transformer (CAVA-252 & CAVA-253): The primary of the ammeter clamp used for measuring must be set to obtain proper measured values.
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Page 16: Specifications
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 15 8.- SPECIFICATIONS Supply/measuring circuit Single-phase 230 V c.a. Voltage tolerance: ±15 % Frequency: 50 ... 60 Hz Burden ......3 VA Operation temperature range ..0 to 50 º C Current measurement .... -
Page 17: Safety Considerations
----- Analyzer of power supply quality CAVA-251 / CAVA-252 / CAVA-253 ------- Page No. 16 9.- SAFETY CONSIDERATIONS The user should take into account all installation instructions referred sections INSTALLATION START-UP SPECIFICATIONS of this manual. 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.
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