Offering a high level of safety and approved by classification societies worldwide, the HS21 medium voltage switchgears are mainly used on board LNG ships and large container ships that require high-capacity electrical power generation systems.
The switchgear and controlgear and the instrument have applied the following standards. : IEC 62271-200/100/106, JEC1201 etc
Marine classification : ABS, DNV, BV, LR, NK
Metal-clad construction
Each section of the HS21 metal-clad switchboard is separated into four compartments.
・Circuit breaker
・Main bus bar
・Cable terminations
・Low voltage equipment
Segregation between compartments is achieved by the use of metal partitions.
Specifications
Available for 7.2kV and 12kV. Options are available. For details, please refer to the catalog or contact us through the inquiry form.
Type
HS21-1
HS21-2
HS21-3
HS21-4
Application
Standard conformance
IEC 62271-200 1)
Classification
ABS, BV, DNV GL, LR, NK and others
Loss of service continuity category(LSC)/ Partition Class
LSC2B-PM
Internal arc classification
AFLR
Rating
Rated voltage
7.2kV
12kV
Rated frequency
50 / 60Hz
Rated power frequency withstand voltage
20kV/min
28kV/min
Rated lightning impulse withstand voltage
60kV
75kV
Rated short time withstand current
25kA 1sec (3sec) 2)
Rated peak withstand current
65kA
Internal arc withstand current
25kA 0.2sec (20kA 1sec) 3)
Main busbar current
1250A
2000A
1250A
2000A
Load busbar current
600A
600/1000A
600A
600/1000A
Construction
Switchgear construction
Metal-clad
Degree of protection
Low voltage compartment IP32
High voltage compartment IP43
HS21-1
Rated voltage
7.2kV
Rated power frequency withstand voltage
20kV/min
Rated lightning impulse withstand voltage
60kV
Main busbar current
1250A
Load busbar current
600A
HS21-2
Rated voltage
7.2kV
Rated power frequency withstand voltage
20kV/min
Rated lightning impulse withstand voltage
60kV
Main busbar current
2000A
Load busbar current
600/1000A
HS21-3
Rated voltage
12kV
Rated power frequency withstand voltage
28kV/min
Rated lightning impulse withstand voltage
75kV
Main busbar current
1250A
Load busbar current
600A
HS21-4
Rated voltage
12kV
Rated power frequency withstand voltage
28kV/min
Rated lightning impulse withstand voltage
75kV
Main busbar current
2000A
Load busbar current
600/1000A
Common
Application
Standard conformance
IEC 62271-200 1)
Classification
ABS, BV, DNV GL, LR, NK and others
Loss of service continuity category(LSC)/ Partition Class
LSC2B-PM
Internal arc classification
AFLR
Rating
Rated frequency
50 / 60Hz
Rated short time withstand current
25kA 1sec (3sec) 2)
Rated peak withstand current
65kA
Internal arc withstand current
25kA 0.2sec (20kA 1sec) 3)
Construction
Switchgear construction
Metal-clad
Degree of protection
Low voltage compartment IP32
High voltage compartment IP43
Notes
1)3sec on request
2)With arc gas exhaust duct