Sungrow MVS8960-LV - User Manual

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System Manual80 pages

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Summary

About This Manual

Target Group

Defines intended audience and their requirements.

How to Use This Manual

Provides guidance on reading and using the manual.

Symbol Explanations

Explains symbols used for safety and information.

Oil Tray Mounting

Safety Precautions

Outlines critical safety measures before and during installation.

Overall Structure of Oil Tray

Details the physical structure, dimensions, and weight of the oil tray.

Install Handles

Instructions for attaching the four handles to the oil tray.

Hoist and Position the Oil Tray

Covers the process of lifting and placing the oil tray.

Preparation Before Hoisting

Details necessary preparations before lifting the oil tray.

During Hoisting

Provides guidance on safe and proper lifting procedures.

Position the Oil Tray

Explains how to correctly place the oil tray on its foundation.

Connect the Grounding Cable

Details the procedure for connecting the grounding cable.

Install the Oil-water Separator (Optional)

Instructions for installing the optional oil-water separator.

Earth Filling

Describes the process of filling the area around the oil tray with earth.

Summary

About This Manual

Target Group

Defines intended audience and their requirements.

How to Use This Manual

Provides guidance on reading and using the manual.

Symbol Explanations

Explains symbols used for safety and information.

Oil Tray Mounting

Safety Precautions

Outlines critical safety measures before and during installation.

Overall Structure of Oil Tray

Details the physical structure, dimensions, and weight of the oil tray.

Install Handles

Instructions for attaching the four handles to the oil tray.

Hoist and Position the Oil Tray

Covers the process of lifting and placing the oil tray.

Preparation Before Hoisting

Details necessary preparations before lifting the oil tray.

During Hoisting

Provides guidance on safe and proper lifting procedures.

Position the Oil Tray

Explains how to correctly place the oil tray on its foundation.

Connect the Grounding Cable

Details the procedure for connecting the grounding cable.

Install the Oil-water Separator (Optional)

Instructions for installing the optional oil-water separator.

Earth Filling

Describes the process of filling the area around the oil tray with earth.

Overview

Function Description
Usage Features
Preparation and Hoisting
Positioning and Grounding
Oil-Water Separator Installation (Optional)
Earth Filling
Maintenance Features

This document provides a user manual for the installation of an oil tray designed for MV stations, specifically for models MVS8850-LV and MVS8960-LV. The primary function of this oil tray is to serve as a containment unit for potential oil leaks from the MV station, ensuring environmental protection and operational safety.

Function Description

The oil tray acts as a secondary containment system for MV stations, particularly those utilizing oil-filled transformers. Its main purpose is to collect any transformer oil that might leak, preventing it from contaminating the surrounding environment. This is crucial for maintaining ecological integrity and complying with environmental regulations. The tray is designed to be installed in a pit on the foundation, providing a stable and secure base for the MV station. An optional oil-water separator can be integrated with the oil tray. This separator is designed to separate oil from water that may accumulate in the tray, allowing for the discharge of water while retaining the oil. This feature enhances the environmental protection capabilities of the system by preventing the discharge of contaminated water. The overall structure of the oil tray includes designated lifting points for safe and efficient hoisting, handles for easier manipulation during installation, and a mounting hole for the oil-water separator. The design emphasizes robust construction to withstand the weight of the MV station and to effectively contain oil spills.

Usage Features

The installation process for the oil tray is outlined with a strong emphasis on safety and precision. Before any installation, it is imperative to ensure that the product is complete and intact, with no damage to its appearance or structural components, and that the transformer has not leaked oil. Any discrepancies should be reported to Sungrow Customer Service.

Preparation and Hoisting:

Handle Installation: The first step involves attaching four handles to the oil tray using the provided mounting holes. These handles facilitate easier handling and positioning of the tray.
Hoisting Equipment: Professional cranes operated by qualified personnel are mandatory for hoisting the oil tray. This ensures safe lifting and prevents personal injury or product damage.
Safety Zone: A strict safety zone of 5m to 10m around the operating area (under the boom and hoisted machine) must be maintained to prevent casualties.
Weather Conditions: Hoisting operations must be halted in severe weather conditions such as heavy rain, thick fog, or strong wind to ensure safety.
Smooth Hoisting: The oil tray must be hoisted smoothly and evenly to avoid collisions and vibrations. It should never be turned upside down or kept lifted for extended periods.
Balance and Weight: Given the approximate weight of 400 kg, awareness of the tray's size and weight is crucial to maintain balance and prevent tipping or falling during movement.
Vertical Lifting: The product should always be lifted vertically. Dragging it along the ground or on top of other products is prohibited.
Connection Inspection: After lifting the product 300 mm off the supporting surface, the connections between the slings and the product must be inspected to confirm security before proceeding with further hoisting.
Gentle Positioning: When moving the product to its target position, it should be laid down gently and steadily, ensuring it lands vertically without being thrown.
Scratch Prevention: Care must be taken to avoid scratching the product during hoisting.

Positioning and Grounding:

Pit Placement: The oil tray is positioned in a pre-prepared pit on the foundation. The manual provides a figure illustrating the required dimensions and positioning of this pit, including a minimum distance of 300 mm between the LV cable inlet area and the oil tray to ensure sufficient space for LV wiring.
Grounding Cable Connection: For safety, the oil tray must be externally grounded. A designated grounding point with an M10 hole is provided on the oil tray for connecting the grounding cable, in compliance with local regulations.

Oil-Water Separator Installation (Optional):

Component Assembly: If equipped, the oil-water separator is installed by assembling its components in a specific order:
1. Insert the thicker end of the joint (48 mm outer diameter) into the oil-water separator mounting hole on the oil tray and fasten it with a nut.
2. Fix the ball valve to the other side of the joint (G1 1/2 screw thread).
3. Fix the elbow to the ball valve.
4. Fix the oil-water separator to the elbow.
Sealing: To ensure a well-sealed connection and prevent water leakage, an appropriate washer must be installed before fastening the joint with the nut or attaching the ball valve. Seal tape should be wrapped around all connection points on the joint and elbow.
Orientation: The side of the oil tray where the oil-water separator is installed should face the RMU (Ring Main Unit).

Earth Filling:

Once the oil-water separator is installed and all electrical wiring for the MV station is completed according to relevant instructions, the space under and around the oil tray must be filled with earth. This completes the oil tray mounting process.

Maintenance Features

While the manual primarily focuses on installation, several aspects imply maintenance considerations:

Initial Inspection: The requirement for a thorough inspection upon receipt of the product for damage, oil leaks, and consistency with the packing list serves as a critical initial maintenance check. This proactive approach helps prevent issues arising from damaged components.
Proper Installation: Adherence to the detailed installation instructions, including correct hoisting techniques, secure connections, and proper sealing for the oil-water separator, directly contributes to the long-term reliability and reduced maintenance needs of the oil tray. Incorrect installation can lead to premature wear, leaks, or structural failures, necessitating more frequent and costly maintenance.
Grounding: The instruction to connect the grounding cable is a fundamental safety and maintenance feature, ensuring electrical safety and protecting the equipment from electrical faults. Regular checks of grounding connections are a standard maintenance practice for electrical installations.
Oil-Water Separator: The optional oil-water separator, by design, implies a maintenance routine for its operation. While not explicitly detailed in this manual, such devices typically require periodic inspection and cleaning to ensure effective separation of oil and water and proper discharge of water. The ability to separate oil from water helps manage collected fluids, simplifying the disposal of oil and reducing environmental impact.
Earth Filling: The final step of earth filling provides stability and protection for the installed oil tray, minimizing external damage and maintaining its structural integrity over time. This contributes to the passive maintenance of the installation.

The manual emphasizes that the products and manuals are continuously improved, suggesting that future versions may include more detailed maintenance schedules or procedures. For any questions or inconsistencies, contacting Sungrow Customer Service is recommended, indicating a support structure for ongoing product maintenance and troubleshooting.