MCB Thermal Calibration Equipment

Dual Power Supply Automatic Assembly and Testing Line is a full-process intelligent manufacturing solution designed for automatic production and quality inspection of ATS dual power transfer switch products. This dual power assembly and test line supports automatic assembly of controllers, circuit breakers and interlocking mechanisms, as well as integrated online processes including voltage resistance testing, mechanical performance testing, electrical voltage testing, aging testing, screw assembly and automatic dismounting and finished packaging. Adopting friction roller and speed chain conveyor system with fixture plate positioning, the line realizes fully automated logistics circulation and intelligent testing. It supports multi-frame product compatible production and upper computer data management, realizing seamless connection with ERP/MES systems for full digital traceability.

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Description

Highlights

Parameters

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Product Detail

The MCB Time-Delay Test Equipment (Thermal Calibration Unit) is one of the most technically demanding stations on the MCB test line, responsible for the precision calibration of the bimetal strip's thermal trip time-delay characteristic. The equipment applies a DC high current within a controlled time to heat the bimetal strip and cause thermal tripping, measures the trip time, and uses an electric screwdriver to automatically adjust the screw according to the result, forming a 'energize-trip-time-measure-adjust screw' closed loop. The core TOTO offset algorithm makes the trip time converge rapidly, improving calibration efficiency by over 30%, while the accompanying cooling unit balances cycle time and flexibility.

Highlights

Parameters

The following are the core performance and configuration parameters of the equipment; actual indicators are subject to factory acceptance.

Parameter	Value
Power source brand & model	TDK Lambda GEN10-240
Output type	DC
Current range	4 A - 240 A
Maximum current tolerance	±1% (measured current value)
Timing accuracy	±5 ms
Calibration method	Electric screwdriver closed-loop adjustment + TOTO offset compensation
Judgment method	Dual thresholds of qualified lower/upper limits; the software automatically calculates the mean for judgment
Cooling time	0 - 30 min adjustable (supports transport-mode bypass)
Calibration efficiency improvement	≥ 30% (compared with the traditional trial-and-error method)
Applicable products	Bimetal-strip thermal-magnetic type MCB (mixed line of multiple rated currents / trip curves)
Calibration algorithm	TOTO offset compensation, rapid convergence of trip time
Defect diverting	Four channels: late trip / early trip / no current / pre-calibration failure
Data traceability	Barcode-bound inspection data uploaded to MES
Line integration	Supports flexible mixed-line production of multiple specifications, embedded in the overall line cycle time