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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing Equipment and Instrumentation | 20-25% | - Relay Testing Equipment
|
| Topic 2: Documentation and Reporting | 10-15% | - Reports and Certification
|
| Topic 3: Component Testing | 20-25% | - Switchgear Testing
|
| Topic 4: Testing Procedures and Standards | 25-30% | - NFPA 70E Electrical Safety
|
| Topic 5: Electrical Theory and Fundamentals | 15-20% | - Electrical Safety Principles
|
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NEW QUESTION # 13
Duringprimary current injection testingof a low-voltage circuit breaker, the breaker trips instantaneously at
8× its long-time pickup setting, even though the instantaneous element is set to10×. What is the MOST likely cause?
Answer: A
Explanation:
CT saturation occurs when the CT core cannot accurately reproduce high fault currents, causing distorted secondary current. This distortion can falsely trigger the instantaneous element at a lower current than expected. NETA Level 2 technicians must recognize CT saturation as a common cause of unexpected trip behavior during primary injection testing, particularly at high multiples of pickup.
NEW QUESTION # 14
A tagout device must be able to withstand a minimum pull force of:
Answer: A
Explanation:
Tagout devices are required to be durable enough to remain attached and legible under typical industrial conditions. A common OSHA-based minimum strength requirement cited in training and field practice is that tagout devices must withstand at least50 pounds of forceto prevent accidental detachment or removal.
NETA Level 2 objectives reinforce that LOTO is not paperwork-it is a physical hazard control program.
Tags must be secured using non-reusable, self-locking means such as a nylon cable tie that meets strength requirements. If a tag can be easily pulled off, it fails as a control measure and increases the likelihood of unauthorized operation.
Even though tagout does not physically prevent operation like lockout, it still must provide reliable warning and procedural control. Ensuring tag integrity is part of the technician's responsibility when applying or verifying hazardous energy control practices before testing or commissioning.
NEW QUESTION # 15
ASTM D 924 is a required acceptance test for liquid-filled transformers containing natural ester insulating fluid according to NETA standards.
Answer: B
Explanation:
ASTM D 924 defines test methods forpower factor and dielectric lossof insulating liquids. NETA standards require this test for acceptance testing of liquid-filled transformers, including those usingnatural ester insulating fluids.
Power factor testing evaluates the condition of the insulating liquid by identifying contamination, moisture, and deterioration. Natural ester fluids, while environmentally advantageous, still require dielectric evaluation to ensure reliability and safety.
NETA Level 2 technicians must be familiar with required acceptance tests and understand why dielectric properties are critical indicators of insulation health.
NEW QUESTION # 16
The dataplate on a condenser bushing listsC2values. What do these values represent?
Answer: D
Explanation:
C2 values represent the capacitance and power factor measured between the test tap and ground flange. These values are critical for evaluating bushing condition and detecting contamination, moisture ingress, or insulation deterioration during acceptance and maintenance testing.
NEW QUESTION # 17
Which portion of an electrical transmission system experiences faultsmost frequently?
Answer: D
Explanation:
Overhead transmission lines experience the highest frequency of faults due to their direct exposure to environmental conditions. Wind, lightning, ice, vegetation contact, animals, and pollution all contribute to transient and permanent fault conditions on overhead conductors. Unlike underground systems, overhead lines are not shielded from weather-related events.
NETA Level 2 technicians must understand fault likelihood when interpreting protective relay operations, breaker trips, and event records. Many relay schemes are designed with reclosing logic specifically because overhead line faults are often temporary. This understanding supports proper commissioning, testing of protective devices, and evaluation of fault-clearing performance.
NEW QUESTION # 18
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