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Document number	Title	Discipline	Type	Current revision	Status
GSPE-P26045-01-E-SPC-001	Technical specification, LV switchgear and controlgear assemblies	Electrical	Specification	Rev 02	issued
GSPE-P26045-01-E-DTS-001	Equipment data sheet, annex B, main switchboard MSB-01	Electrical	Datasheet	Rev 00	issued
GSPE-P26045-01-P-SPC-002	Employer change notice 04, cable entry direction	Project Management	Specification	Rev 00	issued
GSPE-P26045-01-E-SLD-001	Single line diagram, main switchboard MSB-01	Electrical	Single Line Diagram	Rev 03	issued
GSPE-P26045-01-M-GAD-001	General arrangement, main switchboard MSB-01	Mechanical	General Arrangement Drawing	Rev 01	issued
GSPE-P26045-01-E-BOM-001	Bill of materials, main switchboard MSB-01	Electrical	Bill of Materials	Rev 00	draft
GSPE-P26045-01-Q-ITP-001	Inspection and test plan, E-House package	Quality	Inspection and Test Plan	Rev 00	draft
GSPE-P26045-01-Q-FAT-001	Factory acceptance test procedure, main switchboard MSB-01	Quality	Factory Acceptance Test Procedure	Rev 00	draft
GSPE-P26045-01-E-RTM-001	Requirement traceability matrix	Electrical	Requirement Traceability Matrix	Rev 01	issued

GSPE-P26045-01-E-SPC-001

Technical specification, LV switchgear and controlgear assemblies

Identifier: ART-2026-0045-0001
Discipline: Electrical
Document type: Specification
Status: issued
Current revision: Rev 02, issued
Content hash: b2b116f5d222
Stored at: ./storage/b2/b2b116f5d22262a45545c9b328b826b0bea921761f9e1f2bfdeb803128b601af
Size: 2.0 kB, text/markdown

Revision history

Every revision is retained. A superseded revision stays readable because baselines may still point at it.

Rev 02issuedb2b116f5d222

Clarification round two. Ambient temperature raised to 65 C in clause 3.6.

Issued 2026-05-06 20:00 by PT Nusantara Nickel Industri

View ingested text

GSPE-P26045-01-E-SPC-001  TECHNICAL SPECIFICATION
LOW VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES
Nusantara Nickel Smelter, E-House Package

SECTION 3 - ELECTRICAL DESIGN BASIS

3.1 General
The Contractor shall design, manufacture, factory test and deliver low voltage
switchgear and controlgear assemblies for the E-House package. All assemblies shall be
design verified and shall comply with IEC 61439-2 in full. No partial compliance will be
accepted.

3.2 Ratings
The main busbar system shall be rated 400 V, three phase, four wire, 50 Hz. The rated
current of the main horizontal busbar shall be not less than 4000 A continuous at the
design ambient stated in clause 3.6. Each assembly shall withstand a short circuit of
65 kA for 1 s without damage or displacement of the busbar supports.

3.3 Construction
Internal separation shall be Form 4b throughout. Busbars shall be electrolytic grade
copper, silver plated at every bolted joint. The enclosure shall be fabricated from
2.0 mm mild steel sheet and finished in RAL 7035 semi gloss powder coat. Assemblies
shall be floor standing on a fabricated plinth.

3.4 Protection and Environment
The degree of protection shall be IP54 with all doors closed and all cable entries
sealed. Cable entry shall be from the bottom throughout the switchroom. The system
earthing arrangement is TN-S and a full rated neutral busbar shall be provided
throughout.

3.5 Control and Monitoring
Each assembly shall provide a Modbus TCP interface to the plant control system for
electrical metering, breaker status and trip annunciation. The register map shall be
agreed with the Employer during detail design.

3.6 Site Conditions
The design ambient temperature shall be 65 C. Relative humidity shall be taken as
95 percent non condensing. Site elevation above sea level is to be confirmed by the
Employer at a later date.

3.7 Internal Arc
The assembly shall provide adequate protection for operating personnel in the event of
an internal arcing fault. The classification and the accessibility type shall be as
agreed between the parties during detail design.

Rev 01superseded4bf9de308aa7

Clarification round one. Internal arc wording added to clause 3.7.

Issued 2026-05-05 14:00 by PT Nusantara Nickel Industri

Rev 00superseded6474c29ffa2f

Issued with the tender enquiry.

Issued 2026-05-04 10:00 by PT Nusantara Nickel Industri

The blob path shown for each revision is a content-addressed location on the local filesystem. The production design places the same bytes in object storage under the same hash, so nothing about the addressing contract changes when the store is swapped.