Predictika · AC-DC power shelf orders

An AI sales agent's power shelf order, checked before it goes to the factory

An AI sales agent prepares an order for Bel Power Solutions AC-DC power shelves: the input type, the output and busbar style, the redundancy, how many shelves and network attached controllers, and the room the shelves will run in. Before the order goes out, the agent sends it to Predictika, which checks it against a declarative model of the Bel shelf reference table and the SPSTET4 and SPSPFE3 datasheets and returns a verdict, every reason and the figures it computed.

Scope: Bel AC-DC power shelf orders: input type, output and busbar style, redundancy, shelves, network attached controllers, ambient temperature, altitude, load and stated capacity. See everything this validator covers

This validator models orders for Bel Power Solutions AC-DC power shelves, not just the scenarios shown below.

  • Input and output — the six input types (277/480 V Y, 240/415 V Y, 208 V delta, 3x230 V, -48 VDC, +380 VDC) against the eight output and busbar styles. Each pairing is standard, available on request (a short design cycle, so a person confirms it) or not offered.
  • SPSTET4 and SPSPFE3 shelves — the SPSTET4 48 V shelf is a 6+0 shelf of 24 kW (up to 8 in parallel); the SPSPFE3 12 V shelf is 3+3 (8.7 kW) or 5+1 (14.4 kW). Redundancy, the capacity of the order, the load and a stated capacity are checked against these.
  • Controllers, temperature and altitude — one network attached controller per shelf and per power zone; full load to 35 C up to 4,000 m, to 45 C up to 1,800 m, and 75 percent load to 55 C up to 1,800 m, and outside that range the order is blocked.
  • Shelves outside the two datasheets — other shelves in the reference table are accepted as standard or on request, but their ratings, controllers and parallel use are not modeled, so the order goes to a person for approval.

Any order for these shelves is in scope — not only the scenarios pictured here. Not covered: prices (the datasheets list none, so this validator produces no price build-up or line-item quote), the ratings of the shelves other than SPSTET4 and SPSPFE3, parallel operation of SPSPFE3 shelves (the datasheet does not describe it, so it goes to a person) and accessories and cabling. Product details change; the model reflects the datasheets and reference table as read in October 2026.

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

6 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
Nine shelves ordered for a bus that takes eight in parallelOnly with care
A quantity limit has to be written for the shelf model and kept in step with the datasheet.		The shelf count is checked against the model limit on every call.
An input and output pairing the reference table does not offer, or offers only on requestOnly with workarounds
The table is a matrix of six inputs by eight outputs with three kinds of cell; it is usually kept in a lookup that has to be copied from the PDF.		The whole table is in the model, so a missing pairing blocks and an on-request pairing goes to a person, in one answer.
A load or a stated capacity that is more than the shelves deliver at that room temperatureOnly with workarounds
The capacity changes with redundancy, temperature and altitude, so the rule needs a formula; the stated figure is a free-entry field that has to be compared with it.		The capacity is computed from the model and compared with both the load and the stated figure on every call.
Two controllers for one power zone, or for one shelfOnly with care
A rule per controller option, written against a count somewhere else on the order.		Shelves, zones and controllers are checked together.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the order is saved or a step is completed, so a rep often 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 quote; approval findings need a person to sign off; everything else is computed.

    
1Up to 8 SPSTET4 power shelves can be configured for parallel operation; the order has 9.
2The SPSTET4 power shelf is a 6+0 configuration; 3+3 and 5+1 are not offered on it.
32 network attached controllers are ordered for 1 power zone(s); install only 1 controller per power zone.
42 network attached controllers are ordered for 1 shelf(ves); each shelf has one controller slot.
5The load is 100,000 W but the shelves deliver 96,000 W together at this ambient temperature and altitude.
6The load is 80,000 W but the shelves deliver 72,000 W together at this ambient temperature and altitude.
740 C at 2,500 m is outside the operating range: full load to 35 C up to 4,000 m, to 45 C up to 1,800 m, and 75 percent load to 55 C up to 1,800 m.
820 C at 4,500 m is outside the operating range: full load to 35 C up to 4,000 m, to 45 C up to 1,800 m, and 75 percent load to 55 C up to 1,800 m.
956 C at 0 m is outside the operating range: full load to 35 C up to 4,000 m, to 45 C up to 1,800 m, and 75 percent load to 55 C up to 1,800 m.
10-5 C at 0 m is outside the operating range: full load to 35 C up to 4,000 m, to 45 C up to 1,800 m, and 75 percent load to 55 C up to 1,800 m.
11The order states 100,000 W of capacity; the validator computes 96,000 W at this ambient temperature and altitude.
12The load is 9,000 W but the shelves deliver 8,700 W together at this ambient temperature and altitude.
13The SPSPFE3 power shelf is configured as 3+3 or 5+1; 6+0 is not offered on it.
14The load is 13,000 W but the shelves deliver 10,800 W together at this ambient temperature and altitude.
15The order states 14,400 W of capacity; the validator computes 10,800 W at this ambient temperature and altitude.
16The SPSPFE3 datasheet does not describe running several shelves in parallel; a person should confirm it.
17The shelf reference table lists no power shelf with this input type and this output and busbar style.
18Bel lists this shelf as available on request, requiring a short design cycle; a person should confirm it with the factory.
19The shelf is in the Bel reference table, but its ratings, controller option and parallel use are not in the datasheets this validator covers; a person should confirm them.
20The order has 0 shelves; at least one is needed.
213 network attached controllers are ordered for 2 power zone(s); install only 1 controller per power zone.

  

  

    
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. Parallel shelves and controllers: Nine 480 V shelves in parallel with two controllers for one power zone

    
The agent's request. Please quote 9 power shelves with the 277/480 V Y input and the 48 V offset long busbar, in a 6+0 configuration, with 2 network attached controllers for 1 power zone, for a load of 190,000 W, running at 30 C. The order states 216,000 W of capacity. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • At most 8 SPSTET4 shelves in parallel. Up to 8 SPSTET4 power shelves can be configured for parallel operation; the order has 9.
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  • One controller per power zone. 2 network attached controllers are ordered for 1 power zone(s); install only 1 controller per power zone.
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2. Parallel shelves and controllers: The agent resubmits after fixing the errors

    
The agent's request. Please quote 8 power shelves with the 277/480 V Y input and the 48 V offset long busbar, in a 6+0 configuration, with 1 network attached controller for 1 power zone, for a load of 190,000 W, running at 30 C. The order states 192,000 W of capacity. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 8 power shelf(ves) ordered.
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3. Room temperature and load: A 12 V shelf run at 50 C with a 13 kW load and a 14.4 kW stated capacity

    
The agent's request. Please quote 1 power shelf with the 208 V delta input and the 12 V single straight busbar, in a 5+1 configuration, with 0 network attached controllers for 1 power zone, for a load of 13,000 W, running at 50 C. The order states 14,400 W of capacity. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Load above shelf capacity. The load is 13,000 W but the shelves deliver 10,800 W together at this ambient temperature and altitude.
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  • Stated capacity does not match. The order states 14,400 W of capacity; the validator computes 10,800 W at this ambient temperature and altitude.
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4. Room temperature and load: The agent resubmits after fixing the errors

    
The agent's request. Please quote 1 power shelf with the 208 V delta input and the 12 V single straight busbar, in a 5+1 configuration, with 0 network attached controllers for 1 power zone, for a load of 13,000 W, running at 40 C. The order states 14,400 W of capacity. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 1 power shelf(ves) ordered.
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5. A shelf the table does not offer, or offers without data: A 240/415 V site ordering 48 V shelves that the datasheets here do not cover

    
The agent's request. Please quote 2 power shelves with the 240/415 V Y input and the 48 V offset short busbar, in a 6+0 configuration, with 0 network attached controllers for 1 power zone, running at 25 C. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Shelf not covered by the datasheets read. The shelf is in the Bel reference table, but its ratings, controller option and parallel use are not in the datasheets this validator covers; a person should confirm them.
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  • Order summary. 2 power shelf(ves) ordered.
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6. A shelf the table does not offer, or offers without data: A 3x230 V site ordering 48 V offset long shelves that the table does not list

    
The agent's request. Please quote 2 power shelves with the 3x230 V input and the 48 V offset long busbar, in a 6+0 configuration, with 0 network attached controllers for 1 power zone, running at 25 C. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • No Bel shelf for this input and output. The shelf reference table lists no power shelf with this input type and this output and busbar style.
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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 prepares an order for Bel Power Solutions AC-DC power shelves: the input type, the output and busbar style, the redundancy, and more. Before the order goes out, the agent sends it to Predictika, which checks it against a declarative model of the Bel shelf reference table and the SPSTET4 and SPSPFE3 datasheets and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
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  3. The agent says. Please quote 9 power shelves with the 277/480 V Y input and the 48 V offset long busbar, in a 6+0 configuration. The order states 216,000 W of capacity. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
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  5. Blocked, with two findings, all in one answer. Up to 8 SPSTET4 power shelves can be configured for parallel operation; the order has 9. 2 network attached controllers are ordered for 1 power zone(s); install only 1 controller per power zone.
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  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 quote are checked against each other.
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  7. What this shows: for two controllers for one power zone, or for one shelf, a rules-based CPQ is error-prone for this.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the power shelves to 8, the network attached controllers to 1 and the stated capacity to 192,000.
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  10. It calls the validator again.
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  11. This time the validator clears it.
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  12. Both earlier findings are cleared, and the validator's figure matches the quote.
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  13. Two problems caught in one call, fixed in one pass, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer.
    14.