Low Voltage Switchboards

CMRFE20 8PT switchboards are manufactured and tested to the following standards and characteristics:

• Design verified assemblies in accordance to IEC 61439
• Standardized busbar position at the top of the cubicle
• Busbar system up to 7400A
• Rated peak withstand current Ipk up to 375kA
• Switchgear compartment for universal installation
• Modular structure of device compartment
• Single-front and back to back installation
• Cable entry from Top or Bottom
• Cable connection from Front or Rear

Offshore Renewables

C M R (Far East) Pte Ltd provides complete Low Voltage switchboard suites for Offshore Renewables Substations or Offshore Sub-Station (OSS) whose purpose is to transfer power from the incoming wind turbines via high voltage radial cables, transforming the power to 230kV high voltage and exporting it through export cables to an Onshore Substation.

Offshore Sub-Station 400/230VAC power distribution equipment consists of the following types:

1. Switchboards – Larger size switchgear enclosures containing transformer and generator incomers, ACB/MCCB and MCB/RCBO sections, and function as a main hub for further power distribution for substation LV consumers.
2. Distribution panels – panels contain MCCB and MCB/RCBO for LV power distribution to sub-station lighting, heat tracing, control cabinets etc.
3. Control Cabinets – primarily for control of utility systems.

All enclosures are designed and manufactured in accordance to IEC 61439, with hinged doors to allow access to all fixed components and ventilation via natural cooling.

Diesel Electric Propulsion

• C M R (Far East) Pte Ltd provides Diesel Electric Propulsion Systems ranging from 400kW to 15MW
• Voltages from 690V to 15kV
• Different level of protection (up to IP 65)
• Different types of cooling system
• Direct supply of power via power converters
• Squirrel cage or slip rings
• Designed cage or slip rings
• Designed and manufactured following standards such as CEI, NEMA, VDE and special requirements of main certifying like BV, LR, DNV, GL, RINA
• Modular Design, easily adaptable to requirements
• Highly reliable and easy to maintain
• Diesel Electric Propulsion Package LV Series
• LV 200 air cooled, Low Voltage Frequency Converters
• Designed for both synchronous and asynchronous AC motors
• Modular Design
• Power range 250 kW to 1310 kW
• Input section – DFE (6 or 12 Pulse) or AFE (IGBTSs)
• Output section – Two Level Inverter (IGBTs)
• Static speed accuracy is less than 0.01% in field weakening and constant flux
• Speed response time is less than 50ms
• Static Torque accuracy is less than 1% in field weakening and constant flux
• Torque response time is less than 10ms
• Shaft torque ripple is less than 5% in field weakening and less than 3% at constant flux
• Control type – Frequency voltage VF / Vector control VC
• SVPWM modulation
• Drive protection – over-current, earth faults output short circuit, overload on the frequency converter, over / low voltage on the DC bus, IGBT fault, imbalance between motor phases, rectifier of inverter disconnected phases
• Motor Protection – Overload, overspeed
• Safe, flexible and user friendly

C M R (Far East) has integrated different types of Diesel Electric Propulsion (MV and LV) for Cable Layers, Liftboats, Deck Cargo vessels. (see major project references).

Jacking System

C M R (Far East) Pte Ltd, in collaboration with Keppel OTD, is the co-designer, supplier, and fabricator of Jacking Motor Control Center (JMCC) and Local Control Console (LCC), for a renowned self-elevating and positioning fixation system for Jack-up Rigs. The proprietary design jacking system is designed to hold up to 75,000kips per leg and built in compliance with ABS/DNV rules.

The jacking system is implemented in more than 100 projects installed globally since 2005, making the jacking system reliable, well tested, and proven.

Apart from providing the JMCCs and LCCs for jacking systems, we design the monitoring system for the jacking system, named Enhanced Monitoring System (EMS). The EMS monitoring is designed with options to include Leg Impact Motoring & Rack Phase Differential (RPD)s Monitoring.

Monitoring of plant status via HMI screen

Alarm monitoring via HMI screen