PC Based Thermal + Magnetic Trip Characterisitcs Test System for MCB

PC Based Thermal + Magnetic Trip Characterisitcs Test System for MCB PC BASED THERMAL + MAGNETIC TRIP CHARACTERISTIC S TEST SYSTEM FOR MCB The system essentially comprises of a single power source able to deliver either thermal or magnetic test parameters set on the PC by the user. Main Specs / Features at a glance: Input 230 V, 30 A (max), 3 phase, 50 Hz or as specifi ed in the purchase order such as 110V Covers the entire range of MCB from 0.5 A to 125 A: B, C, D curve Thermal Test: User can set up to 4 times the rated current of MCB which includes 1.13 times rated current, 1.45 times rated current and 2.55 times rated current. Magnetic Test: 0.5 125 A MCB: B,C,D curve Short time duty (about 100 ms) is 3000 A, which covers the max

2500 A (125 A MCB: 20 times rated current for D curve MCB) In short, ratings and parameters mentioned in table 7, IEC 60898 are covered and the user may go beyond the chart for other tripping values. The testing sequence (test procedure) & parameters in the software should be automatic as per the IEC 60898 specifi cations. Three samples can be tested for No Trip /Trip Test simultaneously (IEC 60898 clause 1.13, 1.45 test: The feature enables test engineers to compare various MCBs using the software) One sample at a time can be tested for magnetic test. For carrying- out short-circuit trip test: Specially designed Point-On-Wave switching technique (point on current waveform, on which current is applied, is at zero cross over) is used to get proper results. Change of test current after set time is automatic. Three time settings and respective three current settings possible. AUTO and MANUAL operative modes for non PC based operation. In manual mode, the user may use the system as a servo controlled constant current source to test various dummies or use it as a simple serve controlled source of 600 A continuous rating Precision True RMS sensing servo controller keeps the current within +/- 1%. Transient Recording Meter reads the instantaneous current and Trip time Current Transformer ranges 1A, 2A, 5A, 10A, 25A, 50A, 100A, 200A, 500A, 1000A, 2000A & 3000A selected automatically by the software on basis of chosen MCB rating Output Current Continuous rating between 1 A to 600 Amps

Short time up to 3000 Amps Micro Controller based unit & software controls the sequence of operation and measures time with 1 msec resolution (for magnetic / instantaneous tripping). Heavy Duty Contactors for internal switching as per PC based test sequence Separate three TIME INTERVAL METERS for each station. Swamping inductors for stable current. Elegant housing with extruded aluminum profi le PC Based (PC Operated) Test System with Software Interface: The system will be integrated with PC based test software for automatic operation & test sequence, with programmable test & MCB parameters, user access control & report generation. The user has to set the input parameters such as MCB rating, type of test (thermal or magnetic), test currents (trip and no trip current), test times, etc. and the test sequence is automatic. Mounting of MCBs on the test jigs has to be done manually. Once the MCBs are mounted on the panel, complete operation via PC is possible, including setting the test parameters, MCB ranges and CT links. The software will control the tests sequence in a stand alone manner. Wherever applicable the sequence will be automatic in accordance with IEC 60898 testing standard. There will be facility to program MCB ratings & current values as per the user specifi cation or any relevant standard for MCB apart from IEC 60898. The software will display all the test results such as exact trip time in seconds (milliseconds for magnetic testing), trip and no trip current will be stored and displayed for each station. The software will be able to graphically plot time current characteristics curve for both thermal and magnetic tests.

1) LOGIN WINDOW O nce the Te stw are i con i s cli cke d a nd ope ne d, t he Te stw are asks t he use r for the Logi n an d the Passw ord. 2) M AIN M EN U WIN DOW Access ii s s granted o on nc ce e tt h he e user ll o og g ii n n tt o o the Te Te s s tt w wa a rr e. Aft e r t h e u s e r h a s l o g i n t o t h e Te s t w a r e, t h e u s e r i s a u t h e n t i c a t e d t o u s e v a r i o u s options such as: a) b) c) Logout The rmal Characteristics

d) e) f) g) h) i) 6 Debug Re p o r t User Management Settings Calibration Exit THERMAL TEST WINDOW 2 7 5 3 4 1. T h i s w i n d o w d e s c r i b e s t h e w o r k i n g o f t h e p a n e l i n T h e rm a l m o d e. 2. T h e u s e r n e e d s t o s e l e c t t h e t e s t c u rre n t, o n t h e M C B r a t i n g a n d t h e Te s t Ti m e A, B, C. 3. T E S T A w o u l d i n d i c a t e t e s t i n g of M C B, b y p a s s i n g 1. 1 3 t i m e s t h e r a t i n g of the MCB (with suitable CT range selected) 4. T E S T B w o u l d i n d i c a t e t e s t i n g o f M C B, b y p a s s i n g 1. 4 5 t im e s t h e r a t i n g o f the MCB (with suitable CT range selected) 5. S ta t u s : T h i s i n d i c a t e s t h e s t a t u s o f t h e t e s t. 6. T h e u s e r c a n b y p a s s t h e s t a t i o n s b y c l i c k i n g o n t h e t i c k b ox. 7. The user can start the test by clicking on Start

1 3 4 2 1. T h e u s e r c a n u n t i c k t h e p a r t i c u l a r s t a t i o n b ox t o s k i p t h e p a r t i c u l a r station 2. C l i c k i n g o n Q u i t w o u l d q u i t t h e t e s t s c re e n. 3. W h e n t h e 1. 1 3 t i m e t h e t e s t i s s t a r t e d, t h e c u rre n t i s m a d e t o p a s s a n d i s i n d i c a t e d i n t h e Te s t C u rre n t A 4. W h e n t h e 1. 4 5 t i m e t h e t e s t i s s t a r t e d, t h e c u rre n t i s m a d e t o p a s s a n d i s i n d i c a t e d i n t h e Te s t C u rre n t B 5. I f t h e M C B t r i p s d u r i n g 1. 4 5 t i m e s t h e c u rre n t, t h e n i t i s i n d i c a t e d b y t h e PA S S i n d i c a t i o n a t t h a t p a r t i c u l a r s t a t i o n..

CHARACTERISTICS TEST WINDOW 1 4 2 1. The use r ne e ds to e nte r i n the C urre n t Ra ti n gs of the MC B. 2. The cooli n g ti me i s ne e de d to be se t be tw ee n each te st. 3. The use r ne e ds to e nte r i n the num be r of ti me s of curre nt w hi ch i s nee de d to be p asse d to the MC B i n orde r to te st i t. 4. For thi s pur pose, the use r e nte r the di gi t u pto 2 0. 5. The use r t he n cl i ck on St art. Thi s w oul d start the te st. The Vari ac w oul d try to adj ust the cu rre n t re q ui re d. 6. The se rvoco ntrol le r w oul d ke e p on a dj usti n g, an d passi n g curre nt to the du mmy MC B, w hi ch w oul d be re corde d by the tra nsie n t re cordi ng me te r.

7. O nce the curre nt is se t, a w i nd ow woul d po p up. Thi s w oul d ask the use r to, al l ow the pane l to pass the curre n t an d bri n g the MCB s dol l y to cl ose po si ti on. 8. O nce do ne, the curre nt is ma de to pass to the MCB. 9. The MCB sho ul d tri p w i thi n a fe w mi ll i se con d 10. Afte r the MC B has tri p pe d, the use r i s i ndi ca te d wi t h a me ssage. 11. N ow the Vari ac i s a dj uste d to the se con d se t val ue. 12. O nce do ne, the ab ove proce dure is re pe ate d agai n. REPORT WINDOW 1. B y c l i c k i n g o n t h e re p o r t, w o u l d o p e n u p t h e w i n d o w t o g e n e r a t e t h e re p o r t s f o r t h e t e s t s d o n e. 2. The test type have to be selected by the user 3. Fro m D a t e a n d To D a t e i s e n t e re d b y t h e u s e r, b e t w e e n w h i c h t h e re p o r t s i s t o b e g e n e r a t e d. 4. T h e u s e r c a n c l i c k o n g e n e r a t e re p o r t t o g e n e r a t e t h e re p o r t s. USER MANAGEMENT

1 ) U s e r m a n a g e m e n t w i n d ow w o u l d s h ow a l l t h e u s e r s a n d w h i c h u s e r g ro u p t h e y b e l o n g t o. 2) It has various options for a. C re a t e U s e r b. C h a n g e Pa s s w o rd c. Re m o v e U s e r d. Exit NEW USER WINDOW

1. Fo r c re a t i n g a n e w u s e r, u s e r c a n c l i c k o n C re a t e U s e r, a n e w w i n d o w would pop up. 2. G i v e a U s e rn a m e f o r t h e n e w u s e r. 3. S e l e c t a U s e r g ro u p i. e. Adm i n i s t r a t o r / o p e r a t o r / s u p e r v i s o r. 4. C re a t e a n e w p a s s w o rd f o r t h e p a r t i c u l a r u s e r a n d c o n fi rm i t w i t h l o g i n. CHANGE PASSWORD WINDOW

1. For chan gi ng the passw ord for an exi sti n g use r name, the use r can cli ck on cha nge passw ord opti o n. 2. A ne w w i ndow p ops u p. 3. The use r h ave to se le ct t he use rname from the d ro p dow n me n u, w hose p assw ord i s to be cha nge d. 4. The use r e nte rs the ne w p assw ord i n the ne w passw ord sel e cti on and confi rm s i t by e nte ri n g i t agai n i n the confi rm p assw ord se l e cti on. 5. Cl i cki ng o n Save w oul d save the ch an ge s d one.

REMOVE USER WINDOW 1. To re move a par ti cul ar use rn ame fro m the use r man age me nt wi n dow, use r ca n se l e ct the use rname f rom the d ro p dow n me nu, and cl i ck on Re m ove 2. Thi s w oul d ha ve the op ti ons to Re move the use r or re turn to the pre vi o us pa ge. 3. B y cl i cki n g on Re move t he p arti cul ar use r w oul d be re move d.

2 SET T IN G WIN DOW 1. Cl i cki ng o n se tti ngs w i ndow w oul d ope n u p the wi n dow for se tti ngs 2. The use r ca n vie w all the se tti ngs i n the vi e w su b w i ndo w. 3. Cl i cki ng o n Ad d w oul d o pe n up t he su b w i ndow, w hi ch cont ai ns opti o ns to ad d ne w se tti n gs 4. The use r ca n e nte r ne w se tti n g by fi l l i ng i n al l the re q ui re d bl ocks.

5. The use r se ts the pri ma ry vol ta ge accordi n g to the i mpe da nce of the MCB un de r te st. 4 3 2 3

EDIT WIN DOW 1. Cl i cki ng o n Edi t w oul d ope n up a ne w wi n dow, w he re many nu mbe r of rati n gs can be vi ew e d. 2. The use r w he n cl i cks o n 1 of the rati n g, the n the ti me se tti ngs and pri mary vol tage se tti ngs al so appe ars. 3. The use r ca n bri n g chan ge s to the al re ad y se t rati ngs a nd S ave i t by cli cki n g on save.

DEL ETE WIN DOW 1. The del e te w i ndow w oul d show di ff e re nt curre nt rati ng s, w hose se tti ngs h as bee n ente re d y the use r. 2. The use r ne e ds to se le ct the curre nt ra ti ng, an d cl i ck on De le te to de le te the parti cul ar se tti n gs.

CAL IBR ATION WIN DOW GEN ERATE REPO RT WIN DOWS

EXIT WIN DOW 1. The use r ca n exi t t he softw are, by cl i cki ng on Exi t on the m ai n scre e n.

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