Upskilling Operator GI : Inspeksi Level 1 GIS

Summary

The video script details the routine Level 1 inspection process carried out by a GIS operator, focusing on equipment condition checks using the five senses. The process includes physical checks of the DC system, battery protection relay, GIS compartment, PMT equipment, arc damper, and power transformer. Key inspections involve evaluating connector terminals, battery cell containers, relay conditions, and the cleanliness and condition of transformers and panels. The operator ensures proper grounding, checks for potential issues like cracks or leaks, and logs the results in the Power Inspect application. Safety gear and evidence collection are essential throughout the process.

Takeaways

• 😀 PPE such as safety shoes, gloves, and helmets are required before starting the inspection.
• 😀 The operator uses the Power Inspect application to check the inspection schedule and record results.
• 😀 A Level 1 inspection includes checking the condition of the DC system, such as connector terminals and battery cell containers.
• 😀 The operator checks both 110V and 48V DC supplies for issues such as cracks or water leaks in the batteries.
• 😀 Battery protection relay inspections involve checking the condition of the main and backup protection relays for Bay Line, Bay Travo, and Bay Coupler.
• 😀 GIZ compartment inspections involve checking PMT equipment or circuit breakers for cleanliness and checking panel doors and cable holes.
• 😀 Grounding cables are inspected for proper connection, condition of nuts, and to ensure they are free from corrosion or looseness.
• 😀 Arc damper inspections involve checking the SF6 gas pressure on CB DS bus bar, PT, and CT to ensure proper functioning.
• 😀 Power transformer inspections include checking oil levels, cleanliness of the fan, and ensuring no foreign objects are present.
• 😀 The condition of the transformer panel, wiring, and MCBs is checked for proper installation and any looseness or faults, while evidence is recorded in the inspection app.

Q & A

What is a Level 1 inspection in GIS equipment?

A Level 1 inspection in GIS equipment involves using the five senses to check the condition of the equipment. It is the first line of inspection before more detailed checks are made.

What safety equipment should a GIS operator wear before performing an inspection?

Before carrying out the inspection, a GIS operator should wear PPE such as safety shoes, gloves, and safety helmets.

What does the GIS operator use to log inspection results?

The GIS operator uses the Power Inspect application to log in, view the inspection schedule, and record the results of the inspection.

What does the DC system inspection in a GIS check for?

The DC system inspection checks the physical condition of the connector terminals and battery cell containers for both 110V and 48V DC supplies, and looks for any cracks or water leaks in the battery.

What does the protection relay inspection entail?

The protection relay inspection involves checking the condition of the indications seen in the main protection relay and the backup protection on the Bay Line, Bay Transformer (Travo), and Bay Coupler.

What is involved in the inspection of GIS compartments?

The GIS compartment inspection includes checking the cleanliness and condition of the panel door, cable holes in the panel box, and the condition of the grounding cable, from the connection to the condition of the nut (normal, loose, or corroded).

How is the arc damper in the SF6 gas compartment inspected?

The arc damper is inspected by checking the SF6 gas pressure on the Circuit Breaker (CB), Disconnect Switch (DS), bus bars, Potential Transformer (PT), and Current Transformer (CT).

What is checked during the power transformer inspection?

The power transformer inspection starts with visually checking the oil level, followed by checking the cleanliness of the transformer fan and the absence of foreign objects. The condition of the transformer panel, wiring cables, and MCB (Miniature Circuit Breakers) is also checked.

What should be checked on the main body of the transformer during inspection?

The main body of the transformer should be visually inspected for cleanliness, any oil seepage, and the overall condition of the transformer housing.

How does the GIS operator document the inspection findings?

The GIS operator takes evidence of the inspection findings using the Power Inspect application, ensuring that all necessary details are recorded accurately.