Project Overview
Project Type: Primary Electrical Infrastructure - 33 kV Switchgear Section
Delivery Date: March 2025 (Planned)
Location: Grid-Scale Battery Energy Storage System (BESS) Project, East Midlands, UK
Client: EPC Contractor for Primary Electrical Works (380/115/33 kV System)
Siemens Reference: Part No. 4MU 46 XD (30 VA)
Application: High-voltage plug-in connectors for 33 kV GIS busbar systems
Technical Solution
TSTYNICE supplied eight (8) sets of plug-in type high-voltage connectors compatible with Siemens GIS switchgear specifications for direct busbar connection applications.
Equipment Supplied
Quantity: 8 sets
Type: Plug-in Busbar Connector System for 33 kV GIS
Line Item: 20
Technical Specifications
Rated Voltage: 36 kV (operational), 70 kV (power frequency withstand), 170 kV (lightning impulse)
Current Rating: 630A/1250A (as per system requirements)
Insulation Medium: SF6 gas at 0.4-0.5 MPa
Connection Type: Plug-in contact system for GIS busbar chambers
Contact Material: Silver-plated copper alloy
Insulation Class: IEC 62271-203 compliant
Design Features
Direct GIS Integration
Compatible with standard 33 kV GIS busbar interfaces
Spring-loaded contact system for reliable connection
Self-aligning design for easy installation
Enhanced Safety Features
Visible disconnect indication
Interlocking mechanism
Shielded design for partial discharge control
PD level < 5 pC at 1.2 Ur
Reliability Engineering
100-cycle mechanical endurance tested
Temperature rise < 65K at rated current
Corrosion-resistant镀镍 surface treatment
Quality Assurance
Manufacturing Standards: IEC 62271-1, IEC 62271-203
Testing Protocol:
Contact resistance measurement (< 15 μΩ per contact)
Partial discharge test at 1.2 Ur
Power frequency withstand test (70 kV, 1 minute)
Lightning impulse test (170 kV, positive & negative)
Material Certification: Full traceability of copper, insulation materials
Project Integration
Interface Coordination
Dimensional compatibility verification with GIS manufacturer
Gas handling procedure alignment
Installation torque specifications provision
Delivery Package
Connector assemblies with mounting hardware
Installation tools and alignment guides
Gas sealing components (O-rings,密封脂)
Test certificates and installation manual
Functional Application
The supplied plug-in connectors enable:
Modular expansion of 33 kV GIS bays
Busbar section isolation for maintenance
Feeder connection to transformers and cables
Safe and reliable power distribution within the BESS facility
Value Proposition
Technical Compatibility: Direct replacement for specified OEM components
Reduced Lead Time: 12-week delivery versus OEM schedule
Cost Efficiency: 25-30% cost saving versus OEM pricing
Quality Parity: Full compliance with IEC and project specifications
