CHROMA 6408 PDF

Built-in power factor correction circuit provides input power factor of over 0. The Chroma series delivers maximum rated power for any output voltage up to Vac, and at any frequency between 15Hz to Hz. It is suitable for commercial applications Hz ; for avionics,marine, military applications at Hz or higher frequency; or for electrical motor, air-conditioner test applications at 20Hz. All models generate very clean sine or square waveforms output with typical distortion less than 0. It also can simulate all kinds of power line disturbances such as cycle dropout, transient spike, brown out, phase angle, voltage and frequency ramp up ramp down , etc..

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TEL : 02 FAX : 02 Warranty All Chroma instruments are warranted against defects in material and workmanship for a period of one year after date of shipment. Chroma agrees to repair or replace any assembly or component found to be defective, under normal use during this period. Transportation to the factory or service center is to be prepaid by purchaser. Shipment should not be made without prior authorization by Chroma. This warranty does not apply to any products repaired or altered by persons not authorized by Chroma, or not in accordance with instructions furnished by Chroma.

If the instrument is defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs will be billed at cost. Chroma assumes no responsibility for its product being used in a hazardous or dangerous manner either alone or in conjunction with other equipment. High voltage used in some instruments may be dangerous if misused. Special disclaimers apply to these instruments. Any recommendations made by Chroma for use of its products are based upon tests believed to be reliable, but Chroma makes no warranty of the results to be obtained.

This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for Chroma any liability in connection with the sale of our products other than set forth herein. Failure to comply with these precautions or with specific WARNINGS given elsewhere in this manual violates safety standards of design , manufacture , and intended use of the instrument. Doing so will cause a potential shock hazard that could result in personal injury.

Only trained service personnel should replace the required rated current , voltage and specified type normal blow , time delay , etc fuses , and only after identifying and correcting the problem which caused the fuse s to blow.

Do not use different fuses or short-circuited fuseholders. To do so could cause a shock or fire hazard. Component replacement and internal adjustments must be made only by qualified service personnel. Do not replace components with the power cable connected. Under certain conditions , dangerous voltages may exist even with the power cable removed.

To avoid injuries , always disconnect power , discharge circuits and remove external voltage sources before touching components. Return the instrument to a Chroma Sales and Service Office for service and repair to ensure that safety features are maintained.

Ac sources can supply V peak at their output. DEATH on contact may result if the output terminals or circuits connected to the output are touched when power is applied. A Explanation : To avoid injury , death of personnel or damage to the instrument , you must refer to an explanation in the instruction manual.

This symbol indicates that the terminal must be connected to ground before operation of equipment. It calls attention to a procedure , practice , condition or the like , which , if not correctly performed or adhered to , could result in injury or death of personnel.

Table of Contents Chapter 1 General Information 1. Introduction 1. Input Power Requirements 2. Input Connection 2.

Power-on Procedure Chapter 3 Theory of Operation 3. General 3. Overall System Description 3. CPU 3. Keyboard and Display 3. Introduction 4. Initial Setup 4. Measurement Adjustment Chapter 5 Trouble shooting 5. Introduction 5. Trouble shooting guide 5.

This manual is intended for use by service trained personnel only. Detailed information for operating and programming is excluded from this manual. Only sufficient information for service purposes is included. Input Connection The input outlet is located on the rear panel of the inslurment. Refer to Figure on the following page. The instrument must be operated from a three-wire single phase AC power source. The power source must have a current rating greater than or equal to the instrument fuse rating.

In this instrument be operated without an adequate ground connection. Power-on Procedure Apply the line power and turn on the front panel power switch.

No loads should be connected to the output terminal block. The instrument performs a series of self tests each time when turning on the power-switch. Then , the seven segment LEDs display model number or , firmware version number e.

For example. Any interruption of the protective earth grounding will cause a potential shock hazard that could result in personal injury. Each has its specific function that will be described in the sections followed. Overall System Description Figure A board is identified as CPU. The CPU is used here to communicate with DSP at B board for programming variable output voltages and frequencies , to monitor or control the signal and interrupts , and to perform remote control through the GPIB or RSC interface on the optional board.

All measurement functions are done here. The seven-segment LEDs and keyboard are identified as D board and K board respectively , which makes the interfaces between the user and the instrument. It generates the high voltage Vdc supply. Power factor correction technology for is used to achieve a power factor of 0. It generates an AC output sine wave.

Advanced PWM technology is applied to this system to obtain more stability. Overload protection OLP , which contains output protection against short circuit , is also implemented here. The PWM control signal from controller is applied to the full bridge to amplify the output. The low pass filter can reject the switching frequency component. O board consists of the range relays and output relays. Output relays can isolate the AC source from the external source when any error occurs.

Range relays connect the two sets of the secondary of output transformer together in parallel or serial. It sends digital programming information to DSP controller to set the output parameters of the power source.

Data from measurement circuits are accepted and reported to the display and GPIB. Measurement and Sine wave Generator B board Measurement circuits on B board monitor voltage , current , power etc.

Voltage from the output is scaled , and sent to the DSP processor by the analog-to-digital converter. Current sensed by the current shunt is scaled , and sent to the DSP processor by the analog- to-digital converter. The digital-to-analog converter on B board sets the DC voltages that are used for the programmable voltage function. Low pass filter is applied to smooth the reference input signal.

Keyboard and Display The keyboard is designated as K board which is connected through a short flat ribbon cable. It holds 16 key switches and 2 LED indicators.

The display is also connected from B board through a short flat ribbon cable. It comprises of three 4-digit seven-segment LEDs. Programming of V , F can also be done by rotary knob on the front panel. The operation verification tests comprise a short procedure to verify that the unit is performing properly , without testing all specified parameters. After trouble shooting and repair of a defective unit you can usually verify proper operation with the adjustment procedure in order to ensure a proper performance.

Initial Setup a. Disconnect the line cable and all loads from rear terminals. Remove the top cover by removing the top screws. Reconnect line cable and turn on AC power. Turn off AC power when making or removing connections to the power source. Measurement adjustment This section contains the adjustment procedure to verify the measurement of the output voltage and current of the AC Source.

If the measurement result is inaccurate enough , the user may recalibrate it according to following procedure. Note : Before doing the adjustment , make sure the ext-prog LED is off.

Current Measurement Adjustment make sure the voltage range is in the V range. System Test After finishing the recalibration of the measurement , you can check if the output voltage is within spec to the setting value , and the frequency measurement is checked as well at this test.

In case of failure , please refer to the trouble shooting in next chapter. Note : Disconnect any output load when doing the system test. Trouble shooting guide To trouble shoot the power source , first determine what the failure is. Then refer to the information in the following paragraphs to determine the defective assembly. Then , start to take the corrective action according to following direction.

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CHROMA 6408 PDF

We will notify you as soon as this item is available for purchase. Please correct the issue indicated and resubmit or contact us via email or toll free at and we will be happy cheoma assist you with this request. Chroma Thank you for allowing us the opportunity to assist with your test equipment needs. Additional Info Please let us know any information that will help us fill your requirement such as urgency, quantity needed, etc.

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Voodooktilar Chroma AC Sources Power Supplies Additional Info Please provide any additional information which could help us determine whether we can meet your requirements for this offer. It is capable of high peak repetitive current needed to drive most electronic products with high crest factor input design. Please enter your offer below for chorma. In-Stock Notification Request Sent Your request to be notified when this product is back in stock has been sent to our sales department.

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TEL : 02 FAX : 02 Warranty All Chroma instruments are warranted against defects in material and workmanship for a period of one year after date of shipment. Chroma agrees to repair or replace any assembly or component found to be defective, under normal use during this period. Transportation to the factory or service center is to be prepaid by purchaser. Shipment should not be made without prior authorization by Chroma. This warranty does not apply to any products repaired or altered by persons not authorized by Chroma, or not in accordance with instructions furnished by Chroma. If the instrument is defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs will be billed at cost. Chroma assumes no responsibility for its product being used in a hazardous or dangerous manner either alone or in conjunction with other equipment.

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