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KITS DE TEST CT & PT 

FAQ

Vidéo

Théorie

Analyseur CT/PT 

KPM CT PT Analyzer.png

KPM-CT/PT Analyzer est une solution tout-en-un pour tester tous les types de CT/PT selon les normes CEI. C'est un équipement à haut ROI (Return On Investment). Below features  make  KPM CT/PT analyzer  and ideal tool for_cc781905-5cde-3194-bb3b- 136bad5cf58d_ Fabricant CT/PT, laboratoires d'essais, sous-stations (jusqu'à 765 KV), centrales électriques  etc.

Caractéristiques

  1. Low Testing Time          _cc781905-5cde -3194-bb3b-136bad5cf58d_  (Completes all  test for CT/PT   _cc781905-5cde -3194-bb3b-136bad5cf58d_         _cc781905-5cde-3194-bb3b- 136bad5cf58d_           _cc781905-5cde- 3194-bb3b-136bad5cf58d_     _cc781905-5cde-3194-bb 3b-136bad5cf58d_           _cc781905- 5cde-3194-bb3b-136bad5cf58d_         Winding & Cores in few min)

  2. Simple connection         _cc781905-5cde-3194 -bb3b-136bad5cf58d_ (Connexion unique unique)

  3. Highest  Accuracy        _cc781905-5cde-3194 -bb3b-136bad5cf58d_    (0.05% for turns  ratio & winding  resistance )

  4. Portable et léger   (< 15KG)

  5. Rejet élevé des interférences   (peut être utilisé dans 220/400/765 KV  Live Switchyards)

HVCTR (testeur de rapport HV CT)

KPM HVCTR.png

Testeur de rapport HT CT en ligne (KPM-HVCTR) - Testeur de rapport de transformateur de courant haute tension 

Comme son nom l'indique Online HV CT Ratio Tester (KPM-HVCTR) est un_cc781905-5cde-3194-bb3b-136bad5cf594-bb-bb-produit à mesurer Key_cc78190 -136bad5cf58d_ line / CT parameters of  upto  système 33KV.

Le testeur de rapport HV CT en ligne (KPM-HVCTR) est utilisé pour la détermination de :

  • Mesure de courant primaire et secondaire

  • Rapport de transformation actuel

  • Séquence de phase

  • Polarité

CT/PT Pro 

KPM CT PT Pro

KPM-CT/PT Pro est un appareil automatique utilisé pour tester l'instrument      _cc781905-5cde-bb6d_ _cc781905-5cde-bb31 transformateurs par méthode de rapport de tension .

 CT/PT Pro est capable d'effectuer les tests ci-dessous sur les CT et les PT 

1) Turns Ratio (erreur de rapport et erreurs de phase) 

2) Tracé de la courbe d'excitation 

3) Résistance d'enroulement 

4) Charge secondaire CT 

3) Polarité 

Spécifications techniques - : 

  • ROI le plus élevé  avec une proposition de valeur inédite . 

  • Facile à utiliser. KPM- CT PT Pror termine automatiquement le test et génère un rapport . 

  • Tension de sortie maximale de 2 000 V pour le test des caractéristiques d'excitation

Kit d'injection de courant primaire

KPM PIK1000.png

Ce dispositif de test de sous-station est conçu pour garantir une sortie de courant élevée en cas de besoin dans les activités de mise en service de la sous-station. La série d'équipements KPM PIK a les caractéristiques ci-dessous :  

  • Courant de sortie élevé jusqu'à 8000 A

  • Sortie puissante jusqu'à 35 kVA

  • Conception personnalisée.

  • Conçu pour les tests d'injection primaire des relais de protection et des disjoncteurs, pour la mise en service et la rénovation des sous-stations et du réseau électrique

  • Conception modulaire pour un transport facile

  • Échauffement.

Comparaison - CT PT Analyzer & CT PT Pro 

KPM CT PT Testers

Vidéo - Analyseur CT/PT

CT/PT Videos

KPM CT PT Testing Videos

KPM CT PT Testing Videos

KPM CT PT Testing Videos
Rechercher une vidéo...
Unboxing LA Tester , KPM LA 103+

Unboxing LA Tester , KPM LA 103+

03:45
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KPM TAN DELTA - 12 KV (https://www.kpmtek.com/tandelta)

KPM TAN DELTA - 12 KV (https://www.kpmtek.com/tandelta)

01:27
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UNBOXING RELAY TEST KIT - KINGSINE K3063I

UNBOXING RELAY TEST KIT - KINGSINE K3063I

05:50
Lire la vidéo
Testing Tan Delta in 765kV Live Switchyard

Testing Tan Delta in 765kV Live Switchyard

00:43
Lire la vidéo

Théorie - Tests CT/PT

CT PT Theory

Foire aux questions (FAQ)  

FAQ - CT PT Analyzer
KPM CT_PT Analyzer ,  Generator Busduct

CT (transformateur de courant) - Théorie

Comme tout autre transformateur, un transformateur de courant a un enroulement primaire, un noyau magnétique et un enroulement secondaire. Le courant alternatif circulant dans le primaire produit un champ magnétique alternatif dans le noyau, qui induit alors un courant alternatif dans le circuit d'enroulement secondaire. Un objectif essentiel de la conception des transformateurs de courant est de s'assurer que les circuits primaire et secondaire sont efficacement couplés, de sorte que le courant secondaire porte une relation précise avec le courant primaire.

 

 

PT (transformateur de potentiel) - Théorie

Une théorie du transformateur de tension ou une théorie du transformateur potentiel est similaire à la théorie du transformateur abaisseur à usage général. Le primaire de ce transformateur est connecté entre les phases ou et la terre en fonction des besoins. Tout comme le transformateur, utilisé à des fins d'abaissement, le transformateur de potentiel, c'est-à-dire PT, a des spires inférieures s'enroulant à son secondaire. La tension du système est appliquée aux bornes de l'enroulement primaire de ce transformateur, puis une tension secondaire proportionnelle apparaît aux bornes secondaires du PT.

Test CT/PT

Vous trouverez ci-dessous la liste des principaux tests effectués sur CT & PT

  • Essai de résistance d'isolement

  • Test de polarité

  • Test de résistance secondaire/boucle

  • Test de charge (test facultatif)

  • Test de courbe de magnétisation (test facultatif)

  • Test de courbe d'hystérésis

  • Test de rapport de tours (test facultatif)

  • Essai d'injection primaire

  • Test haute tension

  • What is a relay test kit ?
    A relay test kit is an equipment which is used for testing different type of relays. Relay test kit is a combination of programmable current and voltage sources and a timer . During relay testing Relay test kit injects fault in the relay (in form of CT & PT ) and measures the tripping time or reaction time of the relay. If the behaviour of the relay is as per its settings then the relay pass the test else relay fails the test .
  • Why automatic relay test kits are preferred over traditional ( variac based ) relay test kits ?
    Automatic relay test kits have various advantages over traditional kids 1. Signal Stability : The output the current and voltage output of automatic relay test kit is not proportional to its input power supply it means the current and voltage output of relay test kit are getting supply from analogue to digital and then digital to analogue conversion backed with a feedback loop hence the output signals off relay test kit are not dependent on its input power supply . Automatic Relay Test Kit output are stable even if there's there is some minor instability in the input power supply 2. Accuracy , Resolution and functionality : With automatic relay test kits user can vary phase frequency and magnitude of all current and voltage signal independently with very high resolution and accuracy. This is not possible in traditional secondary injection kits which can increase or vary only magnitude ( V or I ) with the help of manual variac.
  • What is a numerical relay test kit?
    Numerical relay test kit is an another name for automatic or microprocessor based relay test kits . Numerical relays generally high accuracy which can be tested with highly accurate automatic relay test kits
  • What is a universal relay test kit ?
    Universal Relay Test Kit is another name for automatic relay test kits as user can vary phase , frequency and magnitude of the current and voltage sources independently and generate any type of fault .
  • What is 6 Phase relay Test Kit , when there is only 3 phase CT or PT in power system ?"
    Many customers are confused with the notation of 6 phase relay test kit . The high end relay test kits have six current sources whose phase frequency and magnitude can be varied independently . These 6 current sources are very useful in testing a differential relays.
  • What is need of advance software with Automatic Relay Test Kits ?
    As we know that each fault is generated due to variation of Phase, frequency or magnitude in CT or PT signal , Few fault simulations are not very simple ( like testing Quadrilateral characteristics of Distance Relays ) . Advance software are very useful in simulating complex faults . Kingsine User gets all in one advance software in their standard purchase .
  • Why high current and voltage amplifiers are desirable in relay test kits
    It is truly said that Current and Voltage sources are the soul of relay test kit . High current and voltage signal is useful in below ways For testing 5A Over Current Relays at 10 Times , we have to inject 3X50A , which is possible with high current relay Test Kits With higher current we can test a differential relay at higher point of BIAS Curve . With higher Currents we can simulate higher faults in Transient Fault Playback . Kingsine Test Kits have the highest Current Rating sources of 0 to 35A each ( @450VA ) and 0 to 300V each ( 124 VA )
  • Why high power amplifiers are desirable in relay test kits ?
    Relay Test Kits with high power amplifiers are preferred as high power is required for testing the electromechanical relays . Also if a relay test kit is having higher power rating then its duty cycle for lower power rating is high hence more rugged design . Kingsine is having most powerful current sources of 480VA ( @35A ) each and most powerful voltage sources of 124VA ( @310V ) each
  • What is more important , Advance software or powerful hardware in selecting an automatic relay test kit ?"
    A powerful hardware is most important for long time robustness of a relay test kit, Few application needs high powered sources also . An advance software is a tool which helps user to test even most complex relays in the easiest way . Hence in today’s scenario relay test kit shall be a combination of high rated sources and advance software . K3063i is a good combination for both
  • Why Kingsine relay test kits have highest power rating in market ?
    In Kingsine each current Source is of 480VA @35A and Voltage Source is 124VA@310V , hence highest in the market .
  • Why Kingsine K3063i is the best combination of power and accuracy ?
    K3063i is having high powered voltage and current source ( current Source is of 480VA @35A and Voltage Source is 124VA@310V) while it is having current range of 3 A, which leads to very high accuracy in lower currents .
  • Whom to contact for any KPM’s test equipment support  ?
    Feel free to contact our Technical Consultant on Consultant@kpmtek.com for any queries .
  • Where is the service centre of Kingsine relay test kits located in INDIA ?
    We have an advance service center in Gurgaon, Haryana with 100% spare availability .
  • What is df/dt relay , Can I test it using Kingsine Relay Test Kits ?"
    Rate of Change of Frequency (ROCOF or df/dt) relay is used for fast load shedding, to speed up operation time in over- and under-frequency situations and to detect loss of grid. ROCOF or df/dt relays are particularly effective in arresting the frequency collapse of a grid in the event of sudden loss of major generation. This is because by measuring the frequency decay rate, the corrective action can be initiated much ahead of the time when frequency of the synchronous interconnection would have actually dipped to a point at which generator under-frequency relays or unit auxiliaries would trip / operate leading to a complete system shutdown. The df/dt is used for load shedding in situations where sudden loss of generating capacity on a system will be accompanied by a decrease in system frequency. In such a situation of load Generation mismatch, the system frequency tends to fall. The df/dt relay can control the circuit breakers and allow feeders to be disconnected from the network, one by one. In Kingsine Software there is a specialised module for testing of df/dt
  • What is distance relay , Which relay test kits can test these relays ?"
    A Distance relay / impedance relay is a voltage restrained overcurrent relay. The relay measures impedance up to the point of fault and gives tripping command if this impedance is less than the relay setting Z. Relay setting Z is known as replica impedance and it is proportional to the set impedance i.e. impedance up to the reach of the relay. The relay monitors continuously the line current I through CT and the bus voltage V through PT and operates when the V/I ratio falls below the set value. In Kingsine both K68i & K3063i have specialised modules for testing of distance relays .
  • Why high power relay test kit is required for testing a electromechanical relays
    Electromechanical relays have high impedance coils , during testing relay test kit has to inject current via coils of high impedance hence high burden is required . Kingsine kits have highest burden hence ideal for testing all type of relays .
  • What is advance Transient playback function of automatic relay test kit ?
    Now a days all advance relays comes with a fault recorder function . Whenever fault strikes this fault file gets saved in relay in form of .cfg / comtrade file . Relay test kit have the feature to import this file in its software and replay the file using its current and voltage sources . This is called as Transient playback feature.
  • What are the precaution with connections to kept in mind while operating relay test kit ?
    Few of the site precautions are -: All the CT and PT terminals which are to be connected to relay test kit shall not be live . Earthing shall always be connected to the kit . During testing high current surge equipment such as welding sets shall be avoided in the same power supply circuit of relay test kit . Always work as per relevant local or international standard of testing .
  • What type of protection features are existing there in Kingsine Automatic Relay Test Kits ?
    Kingsine Relay Test Kits have below protections Short Circuit protection got Voltage Amplifiers Open circuit Protection for current amplifiers Over Heat Protection . Health Earth Indication etc.
  • I want to test Differential Relays which type of relay test kit is more suitable for me ?
    For testing differential relay on 3 phase basis we need 6 Current Source relay test kit i.e. K3063i , We can test a differential relay on phase to phase basis also using a 3 current source relay test kit , K68i
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