Predictika · Current transducer applications

An AI sales agent's current transducer application, checked before it goes out

An AI sales agent proposes a closed-loop current transducer for a customer's converter: the model, the supply voltage, the nominal and peak current, the measuring resistor and the ambient temperature. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published datasheet tables and returns a verdict, every reason and the limits it computed.

Scope: LEM LF 205-S, LF 305-S, LF 306-S, LF 505-S and LF 1005-S closed-loop current transducers: supply voltage, ambient temperature, nominal and peak current and measuring resistance. See everything this validator covers

This validator models applications of five LEM LF transducers as described in their public datasheets, not just the scenarios shown below.

  • Models and ratings — LF 205-S (200 A), LF 305-S (300 A), LF 306-S (300 A), LF 505-S (500 A) and LF 1005-S (1000 A); the primary rms current is checked against the nominal current and the secondary nominal current against the datasheet.
  • Measuring resistance — each datasheet gives the minimum and maximum measuring resistance at listed supply voltages, peak currents and, for three models, at 70 and 85 degrees C; the validator checks the resistor against the row listed for exactly that supply, peak current and (for those three models) ambient temperature; for any other peak current or temperature the datasheet gives no limit, so the case goes to a person.
  • Ranges — the ambient operating temperature range of each model, and the primary current measuring range (IP M) of each model.

Any application of these five transducers that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (the datasheets give none, so there is no price build-up or line-item list), the newer LF 210-S, LF 310-S, LF 510-S, LF 1010-S and LF 2010-S (their maximum measuring resistance is given in a graph), LF 2005-S, LF 205-P, the HOP series and every other LEM transducer, supply voltages between the listed ones, accuracy, offset and bandwidth.

The AI sales agentBuilds the transducer application from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A measuring resistor outside the limits for this supply, peak current and temperatureOnly with workarounds
The limits come from a table with three dimensions per model; a CPQ needs one rule per model, supply, current band and temperature column.		The model, supply, peak current, temperature and resistor arrive together and the matching table row is used; where the datasheet lists no row the case goes to a person.
A peak current beyond the measuring rangeOnly with care
A maximum per model and supply voltage; a CPQ can hold it as a rule per combination.		The peak current is compared with the measuring range of the chosen model on every call.
An ambient temperature outside the model's operating rangeOnly with care
A range per model; a number rule per model.		The range of the chosen model is applied on every call.
A stated secondary current that must match the datasheetOnly with care
A stated figure is a free-entry field; a rule can compare it with the model's value, but someone has to write and maintain it.		The stated figure travels with the order and is compared on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as a step is completed, so a rep fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the order; approval findings need a person to sign off; everything else is computed.

    
1The measuring resistance is 71.5 ohm; the datasheet maximum for these conditions is 71 ohm.
2The measuring resistance is 22 ohm; the datasheet minimum for these conditions is 23 ohm.
3The datasheet gives the measuring resistance limits only at its listed conditions (peak currents of the table rows and, for LF 205-S, LF 305-S and LF 1005-S, ambient temperatures of 70 and 85 degrees C); it lists none for a peak current of 201 A at 70 degrees C, so a person should confirm the measuring resistor.
4The peak current is 421 A; the datasheet measuring range of this transducer is 0 to 420 A.
5The datasheet for LF 205-S gives measuring resistance only at its listed supply voltages, and ±20 V is not one of them.
6The primary rms current is 301 A; the transducer is rated for 300 A nominal.
7The ambient temperature is 86 degrees C; the datasheet operating range is -40 to 85 degrees C.
8The order states a secondary nominal current of 100 mA; the datasheet gives 150 mA.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Traction drive: A traction drive application on the LF 305-S

    
The agent's request. Please order the LF 305-S for our converter: supply ±15 V, ambient temperature 85 °C, nominal rms current 280 A, peak current 500 A, measuring resistor 40 ohm. The order states a secondary nominal current of 150 mA. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Measuring resistance above the maximum. The measuring resistance is 40 ohm; the datasheet maximum for these conditions is 19 ohm.
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2. Traction drive: The agent resubmits after fixing the errors

    
The agent's request. Please order the LF 305-S for our converter: supply ±15 V, ambient temperature 85 °C, nominal rms current 280 A, peak current 500 A, measuring resistor 15 ohm. The order states a secondary nominal current of 150 mA. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Application summary. Rated 300 A nominal with 150 mA secondary nominal current; measuring resistance limits 0 to 19 ohm at these conditions.
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3. Rail converter: A rail converter application on the LF 505-S

    
The agent's request. Please order the LF 505-S for our converter: supply ±24 V, ambient temperature 75 °C, nominal rms current 470 A, peak current 850 A, measuring resistor 2 ohm. The order states a secondary nominal current of 100 mA. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Ambient temperature outside the operating range. The ambient temperature is 75 degrees C; the datasheet operating range is -40 to 70 degrees C.
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  • Peak current above the measuring range. The peak current is 850 A; the datasheet measuring range of this transducer is 0 to 800 A.
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4. Rail converter: The agent resubmits after fixing the errors

    
The agent's request. Please order the LF 505-S for our converter: supply ±24 V, ambient temperature 65 °C, nominal rms current 470 A, peak current 850 A, measuring resistor 40 ohm. The order states a secondary nominal current of 100 mA. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Peak current above the measuring range. The peak current is 850 A; the datasheet measuring range of this transducer is 0 to 800 A.
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5. Rail converter: The agent resubmits after fixing the errors

    
The agent's request. Please order the LF 505-S for our converter: supply ±24 V, ambient temperature 65 °C, nominal rms current 470 A, peak current 800 A, measuring resistor 40 ohm. The order states a secondary nominal current of 100 mA. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Application summary. Rated 500 A nominal with 100 mA secondary nominal current; measuring resistance limits 5 to 65 ohm at these conditions.
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6. Welding supply: A welding supply application on the LF 1005-S

    
The agent's request. Please order the LF 1005-S for our converter: supply ±24 V, ambient temperature 85 °C, nominal rms current 1050 A, peak current 1500 A, measuring resistor 22 ohm. The order states a secondary nominal current of 200 mA. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Nominal current above the transducer rating. The primary rms current is 1050 A; the transducer is rated for 1000 A nominal.
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  • Measuring resistance above the maximum. The measuring resistance is 22 ohm; the datasheet maximum for these conditions is 21 ohm.
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7. Welding supply: The agent resubmits after fixing the errors

    
The agent's request. Please order the LF 1005-S for our converter: supply ±24 V, ambient temperature 85 °C, nominal rms current 950 A, peak current 1500 A, measuring resistor 18 ohm. The order states a secondary nominal current of 200 mA. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Application summary. Rated 1000 A nominal with 200 mA secondary nominal current; measuring resistance limits 10 to 21 ohm at these conditions.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent proposes a closed-loop current transducer for a customer's converter: the model, the supply voltage, the nominal and peak current, and more. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published datasheet tables and returns a verdict, every reason and the limits it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please order the LF 505-S for our converter: supply ±24 V, ambient temperature 75 °C, nominal rms current 470 A, peak current 850 A, measuring resistor 2 ohm. The order states a secondary nominal current of 100 mA. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with two findings, all in one answer. The ambient temperature is 75 degrees C; the datasheet operating range is -40 to 70 degrees C. The peak current is 850 A; the datasheet measuring range of this transducer is 0 to 800 A.
    6. 
      
  6. The validator returned two blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the order are checked against each other.
    7. 
      
  7. What this shows: for a measuring resistor outside the limits for this supply, peak current and temperature, a rules-based CPQ can do this only with workarounds.
    8. 
      
  8. Now the agent resubmits.
    9. 
      
  9. The corrected request. It changes the ambient temperature to 65 °C and the measuring resistor to 40 ohm.
    10. 
      
  10. It calls the validator again.
    11. 
      
  11. Still blocked, with one finding, all in one answer. The peak current is 850 A; the datasheet measuring range of this transducer is 0 to 800 A.
    12. 
      
  12. One finding cleared. Still blocking: peak current above the measuring range.
    13. 
      
  13. The agent resubmits once more.
    14. 
      
  14. The revised request. It changes the peak current to 800 A.
    15. 
      
  15. It calls the validator once more.
    16. 
      
  16. This time the validator clears it.
    17. 
      
  17. The earlier finding is cleared, and the validator's figure matches the order.
    18. 
      
  18. Two problems caught in one call, fixed in two passes, and a clean order. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    19.