GE Kelman DGA 900 Plus Installation & Commissioning Manual page 9

If working at a height greater than 4 feet (1.2 metres) or at a height greater
than that stipulated by national or site regulatory requirements, it is the
responsibility of the installer to ensure that planned work complies with
those requirements.
The installer shall also ensure that any third-party equipment, such as an
approved platform, scaffold or lift is suitable and safe before commencing
work. Ladders or improvised platforms do not meet GE service engineer
requirements.
Do not open the cabinet during inclement weather.
Before commencing any installation or maintenance work, ensure that the
product is disconnected from the mains supply via the external switch or
circuit breaker.
Once installed, this product may have more than one source of electrical
supply. Disconnect all supplies at their source before accessing the cabinet
for servicing. Follow the site lockout-tagout (LOTO) procedure.
Ensure all power sources, including relays, are de-energised as stipulated
by lockout-tagout (LOTO) requirements before performing any
maintenance work inside the product.
The product is operated with the door shut under normal use. The door
shall be kept locked and should only be opened for service access by
suitably qualified and authorised service personnel. During service access,
hazardous voltages are accessible
Only GE-trained and certified personnel may commission GE Kelman
products. Commissioning tasks include making any connections and/or
performing any work within the module, or performing tasks such as
purging the oil circuit between the transformer and the product, and/or all
first start-up procedures relating to equipment or firmware/software.
WARNING: All procedures in this manual must be followed. Any deviation
could cause irreversible damage to the transformer being monitored and/or
the product, and could lead to property damage, personal injury and/or
death.
Bushing monitoring falls outside the scope of UL61010-1 and CSA C22.2 No.
61010-1 and has not been evaluated. When these products are installed in
the United States and Canada, use of bushing monitoring voids the UL
listing / certification of the product.
MA-041 – DGA 900 Plus - Installation & Commissioning Manual - Rev 1.1 4-Mar-22 Page 9 of 99