Clean Energy , 22 kV - Class , Pad Mounted , Oil - Immersed
Transformer , Wind Power Farm
Pad-mounted Transformer Introduction
The main purpose of this manual is for supporting transformer
operation and usage by engineering personnel or technicians.
The transformer described in this manual is the completely
insulated and hermetically sealed
three-phase distribution pad-mounted transformer, which is suitable
for the three-phase power
distribution system of 10kV rated voltage and satisfies
requirements specified in China national
|Rated H.V.:||20 (20.5, 22)kV, ±2×2.5%|
|Notes: The above specifications may be customized according to
Functions and Advantages:
1. High safety protection
2. Complete functions and reliable performance
3. Flexible structure
5. Low power consumption and energy saving
7. High protection level and weathering resistance
8. High mechanical strength and leakage-free
Unpacking and Accepting
Please check whether there is any damage, distortion and crack on
the transformer and its
components. With reference to the shipping list or packing list,
check the accessories and special
tools. Only after the inspection is finished and the result is
acceptable can the installation be
Notices for installation:
Before any system connection, be sure the transformer is earthed.
The earthing terminal
of the pad-mounted transformer should be a fixed and low-resistance
earthing point. If
the earthing resistance does not meet the requirement, resistance
should be adopted.
Before system cabling, please clean all the bushings, bushing
seats, terminal cabling
seats and contacting point, to remove all the dust, oil pollution
and foreign substances.
During installation, please close the equipment door and lock it
when there is no technician on duty.
Please refer to the following process for installation:
Prepare the installation base---->lay the HV and LV
lifting---->equipment fixing---->equipment earthing---->HV
and LV cable fixing
(preliminarily)---->HV and LV cable phase process---->prepare
elbow cable plug and LV
terminal---->put the elbow cable plug (and lightning rod) into
the bushing and connect the LV
cables---->mount the fault indicator and electricity
display---->mounting LV sub-assembly.
Prepare the Installation Base
The basis is composed of reinforced concrete base capable of
holding the transformer, the
manhole convenient for cable connections and equipment maintenance,
cable support/rack or
earthing sub-assembly. Fore more information about the basis
preparation, please refer to the basis
manufacturing instructions provided together with the equipment.
Please be noted that:
1) The basis should be made far from the flat bog area, to avoid
2) The base top should be located on a high place and 100~400mm
above the ground.
3) Cable supporting rack should be made on the basis and firmly
fixed, with certain
mechanical strength to avoid any shaking or loosing.
4) The base should be of sufficient mechanical strength to prevent
any sinking, which may
cause equipment damage.
5) The surface of the base should be on the same level and smooth.
If necessary, please use
level bar to check the base surface, thus to ensure no equipment
distortion will happen
due to poor base conditions. Un-even base surface may makes door
6) The earthing resistance and earthing cross section should meet
standards, industrial standards and regulations specified by local