SERVICE
Overview
Equipment check ensures that selected equipment will operate reliably under actual system conditions and will not fail during operation.
Unlike nominal-based selection, the verification is performed using real operating scenarios, including fault conditions and transient processes.
Approach
Equipment is evaluated within a digital power system model considering:
- actual load and short circuit currents
- transient and fault conditions
- interaction between system components
- impact of the external grid
The verification is performed in the context of the entire power system, not as isolated checks.
What is verified
- cables and lines — for continuous and overload current ratings
- transformers — for loading and thermal performance
- circuit breakers — for interrupting capacity
- buses and switchgear — for fault current withstand
- reactive power equipment — for operating conditions
When it is applied
- during design of new facilities
- during equipment selection
- during modernization of existing systems
- when investigating overloads or failures
- when validating engineering solutions before implementation
Strengths of the approach
- Verification under real operating conditions, not only nominal ratings
- Consideration of fault and transient conditions
- Identification of hidden overloads and weak points
- Reduction of failure risk during operation
- Ability to optimize equipment cost based on actual needs
Typical tasks
- verification against short circuit duties
- load and overload capability checks
- breaker interrupting rating verification
- identification of over- and under-utilized equipment
- compliance assessment with standards
Positioning
We do not just check ratings — we verify whether the equipment can withstand real system conditions.
The result is confirmation of reliability or identification of risks before they appear in operation.
Input data
- Single-line diagrams
- Equipment parameters (transformers, cables, breakers, buses)
- Study results (short circuit, load flow, dynamics, etc.)
- Equipment ratings and limits
- System operating conditions (normal, maintenance, fault)
- Applicable standards and requirements
Results
- Verification of equipment against load and short circuit currents
- Assessment of thermal and electrodynamic withstand capability
- Verification of breaker interrupting capacity
- Identification of overloaded or improperly selected equipment
- Compliance check with applicable standards
- Recommendations for replacement or upgrade