1. Gdpack 40.5kV Technical Data Sheet MV-LV Prefabricated Substation
Steel Housing
Primary Voltage: up to 40.5kV
Power Rating: up to 3500 kVA
Technical Data Sheet

2. GDpack Primary Voltage: 40.5kV Definition
Power Rating: Up to 3500 kVA
GDpack
Definition
GDpack is a type tested MV/LV prefabricated substation comprising of an enclosure containing Medium Voltage switchgear, Distribution transformers, Low Voltage switchboards, connections and auxiliary equipment to transform energy from medium to low voltage systems.
Layout
Features
Type tested per latest GB
Internal Arc fault Type AB tested at 20 kA, 1second
High level of safety for equipment and personnel
All equipment inside GDpack are type tested
Engineered footprint meeting required clearance standards
Optional oil collection pit underneath the transformer
Steel housing
Can be delivered with transformer installed
Engineered for smooth air flow and natural cooling
Locking system for all doors to prevent un-authorized entry of personnel
Stainless steel hinges for corrosion resistance
No access to live parts
Equipment Description
Transformer GDpack is designed and manufactured to accept oil or dry transformers.
Medium Voltage GDpack can be provided with different options of Medium Voltage kV Switchgear from our SF6 insulated compact secondary switchgear portfolio.
Low Voltage The LV compartment could accommodate an LV panel with ACB or MCCB’s and various number and ratings of outgoing feeders depending on transformer size and customer needs. Special low voltage equipment is available upon request.

3. GDpack Primary Voltage: 40.5kV Additional equipment
Power Rating: Up to 3500 kVA
GDpack
Additional equipment
Devices for metering and control circuit
SCADA ready for easy connection to any SCADA System through standard communication protocols.
Power Factor Correction Panel
Remote Terminal Unit (RTU) to monitor the CSS and store data for operation, maintenance and fault analysis. Local and remote monitoring operations available.
Standard Models
Model Number
Max.
KVA kV
Maximum Number of MV Switchgear panels
MV Switchgear Insulation Type
GDpack 20NS
2000
12, 24, 36 & 40.5
Up to 4
Gas
GDpack 35NS
3500
Installation
Factory delivers a factory tested solution to the installation site, and provides all necessary lifting device for moving the substation.
No complicated civil engineering job is needed in advance or during the installation.
Only a pit has to be excavated and the substation has to be placed into this installation pit.
When the substation is in its place, than the commissioning can be started after the incoming and outgoing cables had been connected.
For detailed information please see our installation manual.

4. GDpack Primary Voltage: Up to 40.5kV Technical Data Description
Power Rating: Up to 3500 kVA
GDpack
Technical Data
Description
UniPack Compact Secondary Substation – Mercury layout
Max KVA
2000
3500
Type of layout
Mercury 20NS
Mercury 35NS
Rated voltage (kV)
12/24/36/40.5 kV
Short circuit withstand current of internal
earthing network
6kA/1s, upon request 20kA/1s
Substation dimension (with Gas insulated MV swgr.
-LxWxH) in mm.
3450x2450x2750
4400x2450x3050
Weight of substation excluding transformer
(approx.) in kg.
2700
3200
Transformer compartment dimension (LxWxH) in mm
2400x1800x2400
2850x2400x2700
Maximum transformer load losses/ No load
losses in watts
14300/2500
30000/4000
Transformer compartment IP protection degree
(min/max)
IP 23D / IP 33D
MV/LV IP compartment protection (min/max)
IP 23 / IP 54
CSS Enclosure Thermal class (min/max)
20K / 10K
Maximum dimension of MV compartment
4-way SafeRing / SafePlus 40.5kV
Maximum dimension of LV compartment
10 pcs of 630A MCCB
MV cabling
The connecting can be AL or CU acoording to customer request. If not specified then the cross section is selected to fulfill the short circuit requirement of the arrangement.
MV terminations
The connecting cables can terminated with premolded/cold shrink/heat shrink cable terminations according to customer’s request
LV connection to transformer
Cable or busbar according to the rated power of the transformer
Rated current of LV panel, A
Rated short circuit withstand capacity of LV
Busbar system, kA/1s
50 kA/1s
All information subject to change without notification
Technical Data Sheet Number: DS.CSS.S.M_03