GGD Series AC Distribution Cabinet Power Switchgear
GGD Series AC Distribution Cabinet Power Switchgear Description
GGD type fixed enclosed low-voltage switchgear is suitable for the
power station, substation, industrial and mining enterprises and
other power users. AC 50/60 Hz, rated working voltage to 660V,
rated working current to 3150A. As power conversion, distribution
and control for power, lighting and distribution equipment in a
50kA power distribution system.
GGD Series AC Distribution Cabinet Power Switchgear has 129 kinds of main circuit design scheme,total 298
specifications
GGD1 49 schemes 123 specifications refer to table2
GGD2 53 schemes 107 specifications refer to table3
GGD3 27 schemes 68 specifications refer to table4
GGJ1, GGJ2 capacitance compensation switchboard is designed to meet
reactive-load compensation, which has 4 main circuit schemes, total
12 specifications, refer to table 5.
GGD Series AC Distribution Cabinet Power Switchgear Installation and service
After the product is sent to the delivery place, it should be
inspected first for its intact package and the concerning
department should be informed to for its reason if any problem is
found. For the product that will not be installed in time, it
should be put to the suitable place according to the normal
stipulation.
- The product should be installed according to the diagram and the
basic groove and bolts shall be prepared by the customer. The joint
surface shall be repaired even and kept clean for the installation
of busbars wiping with Vaseline or other measurement. Then,
tightening shall be done by bolt.
- After the product is installed, inspection and test shall be
carried out as the following:
- Check if the painting of cabinet is off and its inside is dry or
clean.
- Check the operation mechanism of electrical element is flexible or
not, without block or no by too much force to operate.
- If the breaking of main devices are reliable or accuracy and the
breaking of auxiliary contact are reliable or accuracy.
- If the indication of instrument, ratio and polarity of instrument
transformer is correct.
- If the connection of busbar is good, and its insulation support ,
other pieces and fittings are installed well.
- If the auxiliary contact is conformity to the requirement and if
selection of type of fuser is correct. If the set value of the
relay is conformity to the requirement of design and action is
accuracy.
- If the connection point is conformity to the requirement of
electrical principle diagram.
- If the protection circuit system is conformity to the requirement.
- The insulation resistance shall be not less than 1 Meg ohm by the
Ohmmeter of 500V Meg ohm.
- Notice:
- The product can not be installed back to the wall and can be
operated in single side (front side). Only by the specialized and
qualified person after the examination that operation, maintenance
and inspection can be done.
- The resistance of air circuit breaker will be increased after
closing and opening for many times due to the partial burning of
main contact with charcoal occurred. So the regular maintenance and
inspection shall be done according to the operation instruction.
Completeness of product of GGD Series AC Distribution Cabinet Power Switchgear
The following documents shall be supplied by the manufacturer
during the delivery.
- Packing list
- Qualified certificate
- Operation instruction
- Test report
- Related electrical drawing
- Key, operation handles and spare parts specified by the contract