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TRANSFORMER COMPONENTS
Electronic Liquid level indicator eOLI/eOLI22 and Comem
eViewer
Quick start
1. Safety
1.1
Safety instruction
Make sure that any personnel installing:
• are technically qualified and competent
• fully comply with these assembling
instructions
Improper operations or misuse could cause
danger to:
• life and limb
• to the equipment and other assets of the
operator
• to the proper function of the equipment
Safety instructions in this manual are shown in
three different forms to emphasize important
information
THIS INFORMATION INDICATES PARTICULAR DANGER TO
LIFE AND HEALTH. DISREGARDING SUCH A WARNING
CAN LEAD TO SERIOUS OR FATAL INJURY.
CAUTION
THIS INFORMATION INDICATES PARTICULAR
DANGER TO EQUIPMENT AND/OR OTHER
PROPERTY OF THE USER. SERIOUS OR FATAL
INJURY CANNOT BE EXCLUDED.
NOTE
THIS NOTE GIVES IMPORTANT AND SPECIFIC
INFORMATION CONCERNING THE EQUIPMENT.
WARNING
1.2
Specified applications
The liquid level indicator is used in oil-insulated
transformer to indicate the conservator tank oil
level. Inside the device are usually installed up to
four micro-switches to signal some critical oil
levels. The micro-switches can give alarm or
transformer power off signals
It is important to observe the limit values
indicated on the nameplate and in the operating
instruction before commissioning the device
1.3
Safety notes on the equipment
operation
Electrical installation is subject to the relevant
national safety rules.
It is mandatory to connect the grounding cable
WARNING
ALL RELEVANT FIRE REGULATION MUST BE
STRICTLY OBSERVED.
CAUTION
INSTALLATION, ELECTRICAL CONNECTION AND FITTING
THE DEVICE MAY ONLY BE PERFORMED BY QUALIFIED
PERSONNEL AND ONLY IN ACCORDANCE WITH THIS
INSTRUCTION MANUAL. IT IS THE RESPONSIBILITY OF
THE USER TO ENSURE THAT THE DEVICE IS USED FOR
SPECIFIED APPLICATION ONLY.
FOR SAFETY REASONS, PLEASE AVOID ANY
UNAUTHORIZED AND IMPROPER USAGE.
ALL RELEVANT FIRE PROTECTION REGULATIONS
MUST BE STRICTLY FOLLOWED

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Summary of Contents for ABB eOLI

  • Page 1 — TRANSFORMER COMPONENTS Electronic Liquid level indicator eOLI/eOLI22 and Comem eViewer Quick start 1. Safety Safety instruction Specified applications The liquid level indicator is used in oil-insulated Make sure that any personnel installing: transformer to indicate the conservator tank oil •...
  • Page 2: Technical Features

    2. Technical features NOTE NOTE FOR COMEM eOLI/eOLI22 The electrical micro switches operate at an advance angle ≤°5 with respect to the min or max indications of the oil level in the EXPECTED USE : EXTERNAL conservator. When there is a double contact, for e.g. double...
  • Page 3: Installation

    1. Table 1 Fig.3 3.4 Modbus parameter In order to implement a communication network with eOLI/eOLI22 communicating in Modbus RTU, the following communication parameters: shall be considered: Speed of data transmission (baud rate ): 9600...
  • Page 4: Electrical Connection

    Positive Comem eViewer (4) with positive 4 mA = 0% (minimum arrow position) Comem eOLI (6) 20 mA = 100% (maximum arrow position) 4.3.3 Comem eViewer – Comem eOLI/eOLI22 4.2.3 Modbus communication connections Digital output RS485: terminals 3-4 The following scheme (Fig.6) describes the...
  • Page 5: Troubleshooting

    — 5. Troubleshooting Issue What to do Check that the eDevice is properly fed with eOLI/eOLI22 do not provide any 4- 24 VDC between terminals 1 ( ) and 2 ( ) – 20mA/Modbus output Blue LEDs (one fixed and one blinking)

This manual is also suitable for:

Eoli22