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NETA NETA_2 Exam Syllabus Topics:

SectionWeightObjectives
Electrical Theory and Fundamentals15-20%- Electrical Safety Principles
  • 1. Lockout/Tagout Procedures
  • 2. Arc Flash Safety
  • 3. Personal Protective Equipment
- AC/DC Circuit Analysis
  • 1. Ohm's Law and Power Calculations
  • 2. Three-Phase Systems
  • 3. Kirchhoff's Laws
  • 4. Series and Parallel Circuits
Testing Procedures and Standards25-30%- IEEE Testing Standards
  • 1. IEEE 62.45 Low-Voltage Testing
  • 2. IEEE 4 High-Voltage Testing
- NETA Maintenance Testing Specifications
  • 1. Acceptance Testing Standards
  • 2. Electrical Testing Procedures
  • 3. Visual Inspection Procedures
- NFPA 70E Electrical Safety
  • 1. Arc Flash Hazard Analysis
  • 2. energized Work Permits
Documentation and Reporting10-15%- Test Documentation
  • 1. Test Results Interpretation
  • 2. Data Recording Procedures
- Reports and Certification
  • 1. NRTL Certification Requirements
  • 2. Test Report Writing
Testing Equipment and Instrumentation20-25%- Circuit Breaker Testers
  • 1. Secondary Injection Test Sets
  • 2. Primary Injection Test Sets
- Relay Testing Equipment
  • 1. Protective Relay Testers
- Voltmeters and Ammeters
  • 1. Digital Multimeters
  • 2. Clamp Meters
- Insulation Testing Equipment
  • 1. Megohmmeters
  • 2. Hipot Testers
  • 3. Insulation Resistance Analyzers
- Grounding and Bonding Testers
  • 1. Earth Resistance Testers
  • 2. Ground Bond Testers
Component Testing20-25%- Protective Devices Testing
  • 1. Coordination Studies
  • 2. Overcurrent Relay Tests
- Transformers Testing
  • 1. Winding Resistance Tests
  • 2. Turns Ratio Tests
  • 3. Excitation Current Tests
- Conductors and Cables Testing
  • 1. Insulation Resistance Tests
  • 2. Hi-Pot Tests
  • 3. Continuity Tests
- Switchgear Testing
  • 1. Contact Resistance Tests
  • 2. Circuit Breaker Timing Tests
  • 3. Dielectric Withstand Tests

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NETA Level 2 Certified Assistant Electrical Testing Specialist 認定 NETA_2 試験問題 (Q69-Q74):

質問 # 69
A1500:5 multi-ratio CTproduces400 Vat the1200:5 tapduring saturation testing. What voltage is expected at the1500:5 tap?

正解：B

解説：
Voltage is proportional to the number of turns. Moving from a 1200:5 ratio to 1500:5 increases turns by a factor of:
1500 / 1200 = 1.25
Expected voltage = 400 × 1.25 =500 V
NETA Level 2 technicians must accurately scale saturation test results across CT taps to verify performance and protection reliability.


質問 # 70
Identify the substation bus arrangement that usestwo circuit breakers per circuit, allowing either breaker to be removed from service without interrupting load.

正解：A

解説：
Adouble breaker busscheme assigns two breakers to each circuit, providing the highest level of reliability and operational flexibility. Either breaker can be removed for maintenance without interrupting service.
NETA Level 2 technicians must recognize bus schemes when performing commissioning tests, protection verification, and functional checks, as the scheme directly affects relay logic, interlocking, and testing sequences.


質問 # 71
When personnel are working in apermitted confined space, how many attendants must remain outside the space and for how long?

正解：A

解説：
Confined space safety requirements mandate thatat least one trained attendantremain outside the spacefor the entire duration of the entry operation. The attendant monitors conditions, maintains communication, and initiates rescue procedures if needed. NETA Level 2 technicians must comply with confined space protocols when testing transformers, vaults, or enclosed switchgear compartments.


質問 # 72
In ANSI/IEEE device numbering, which device best corresponds toDevice 52?

正解：D

解説：
ANSI/IEEE device numbers provide a standardized way to identify protective and control functions in power systems.Device 52designates anAC circuit breaker. It is one of the most commonly referenced device numbers on one-lines, schematics, relay settings sheets, and commissioning documentation.
NETA Level 2 technicians must be comfortable identifying device numbers because testing tasks frequently reference them. For example, when verifying breaker control circuits, interlocks, trip/close coil operation, auxiliary contacts, or anti-pump circuits, drawings may refer to "52a" and "52b" auxiliary contacts (breaker position contacts). Similarly, protection schemes may call for verifying that a relay output properly operates the52 trip circuit.
Correct identification reduces errors during functional testing, secondary injection, and commissioning checks. Misinterpreting device numbers can lead to wiring mistakes, incorrect test points, or a failure to validate protective functions. Therefore, recognizing device 52 as the AC breaker is a core competency within Level 2 electrical testing fundamentals and component testing.


質問 # 73
Why shouldlint-free ragsbe used when cleaning circuit breaker components?

正解：A

解説：
Lint fibers can attract dust, moisture, and contaminants, which may degrade insulation and interfere with mechanical movement. NETA Level 2 technicians are expected to maintain cleanliness during maintenance and testing activities to prevent introducing foreign material that could affect breaker performance or reliability.


質問 # 74
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