|
|
|
|
 |
|
|
 |
We, NISHISHIBA provide generating systems, electric propulsion systems and other offshore electric equipment. |
|
 |
Synchronous motor700kW-90rpm
Thyristor motor control panel
2x3,000PS electric
propulsion system |
| Electric propulsion systems |
| * |
NISHISHIBA's electric propulsion systems make a contribution to safety operation with redundancy, better operation with lowest vibration and sound noise and minimized machinery space. |
|
| * |
Various control systems are available
- IGBT inverter system
- IEGT inverter system for large capacity (more than 2,000kW)
- Thyristor motor system |
|
| * |
Example of products
2x1,000kW Thyristor Leonard , 2 motors 2 shafts (FPP)
2x700 kW Thyristor motor , 2 motors 2 shafts (FPP)
2x3,000PS Thyristor motor , 2 motors 1 shafts (FPP)
4x3,100kW Induction motor , 4 motors 2 shafts (CPP)
2x1,500kW IGBT inverter , 2 motors 2 shafts (FPP)
6x4,200kW GTO inverter , Azimuth thruster |
|
|
3,500kW Shaft generating systems
Control panel for Medium voltage shaft generating system wiht digital controller
|
Shaft driven generating systems
(Medium and Low voltage) |
NISHISHIBA’s shaft driven generating systems make a contribution to saving of maintenance work as well as saving energy.
| * |
3,500kW of the worldÆs largest class. |
|
| * |
Available various type and enclosure.
- Intermediate shaft mounting type, overhang type or step-up type
- With fresh water cooled air cooler(IP44) or semi-enclosed drip proof type (IP22 or IP23) |
|
| * |
The distortion factor of the output voltage wave form is 5% or less as standard. |
|
| * |
The control system has adopted digital control to get high reliability and control performances and to realize easy operation and maintenance. |
|
|
Electric Winch
Control Panels
(with an Built-In Inverter)
|
| Electric Winch Drive Systems |
| * |
Reduction of the burden of in-vessel work
Requires no plumbing maintaining due to aging and is easy to operate.
|
|
| * |
High reliability
Uses a high-reliability IGBT inverter for variable speed control. |
|
| * |
High performance
Provides an operating efficiency approx. 30% higher than hydraulic drive systems. Offers x3 line speed on light loads, improving mooring efficiency.
|
|
| * |
Nine Standard Models
37-, 45-, 55-, 75-, 90-, 110-, 132-, 160- and 200-kW models are available as standards. Can be used as an anchor windlass, a mooring apparatus and the like. |
|
|
440kW inverter panel
(For LNG carrier)
|
IGBT inverter system controls speed of the motor to drive auxiliary machinery in ships at optimum speed and contributes energy-saving operation.
| * |
Maximum available capacity of the motor is 500kW with low voltage (A.C. 440V).
By using 2 motors in parallel or in tandem to drive one machinery, the maximum driving power can be increased up to 1,000 kW.
For medium voltage system,IEGT or MV inverter is applied. |
|
| * |
Harmonics in output current is suppressed to minimum by applying PWM switching system with sine wave. |
|
| * |
Suitable to drive pumps, fans and compressors in ships for energy saving. |
|
| * |
Many experiences in driving machinery in ships such as L/D gas compressors for LNG carriers or cooling water pumps for various types of vessels. |
|
| * |
By applying a sensor-less vector control system, motor can be controlled smoothly even at low-speed area with the high torque. |
|
| * |
By applying the vector control system with a sensor, application for crane control is possible. |
|
|
8.125kVA-6.6kV
Brushless
A.C. generator
Low voltage brushless A.C. generator (Totally enclosed with
water cooled air cooler)
|
| Brushless A.C. generators |
Brushless A.C. generators
Brushless A.C. generators meet various needs of marine field and output voltage
from low voltage (A,C. 450V ) to medium voltage (A.C. 11kV)
| * |
Both diesel engine and turbine driven generator are applicable. |
|
| * |
From low voltage (A.C. 450V) to medium voltage (11kV) is applicable. |
|
| * |
Standard enclosure is either drip proof (IP22) or totally enclosed with water cooled air cooler (IP44) |
|
| * |
Highly reliable F class insulation system is applied. |
|
|
Low voltage standard
Induction motors
3,000PS-3.3kV motors (Totally enclosed with water cooled air cooler)
|
| Induction motor for marine use |
Induction motors are used to drive all kinds of machineries in ships such as bow-thrustors, F.D. fans and oil pumps for deck-machineries.
Standard induction motors in compliance with JEM standard (and IEC standard) are also applicable.
| * |
From low voltage (A.C.450V) to medium voltage (11kV) is applicable. |
|
|
Explosion-proof internal motor type axial flow fan
Auxiliary blower
|
| Fans and blowers for marine use |
Fans and blowers such as internal motor type axial flow fans, axial flow fans with bent-duct, turbo fans and sirocco fans used for ventilator of each division, forced draft fans, pump room fans and auxiliary blowers for the main engine are available.
For ventilation of cargo hold of the vessel such as RO/RO, explosion-proof internal motor type axial flow fans are available from our standard products.
|
|
Electric balancer
|
The electric balancer reduce the shipÆs hull vibration by generating the vibration of same frequency and negative phase to the shipÆs hull vibration which is the secondary harmonics to the revolution of the main engine.
| * |
The electric balancer has the standard series of maximum exciting force of 2.5 ton, 5 ton and 7.5 ton.
The exciting force can be adjusted by 0.5 ton step. |
|
| * |
The electric balancer can be easily applied to the existing vessel. |
|
|
Medium voltage switchboard
|
| Switchboards, Starters and monitoring systems |
NISHISHIBA satisfies all customerÆs needs of starters, medium voltage and low voltage switchboards.
| * |
Many switchboards have been delivered to large offshore work vessels as well as merchant vessels. |
|
| * |
Power management system (PMS) necessary for dynamic positioning system (DPS) or energy saving operation is applicable. |
|
| * |
Integrated electric system including integrated monitoring system (IMS) is also applicable. |
|
|
|
|
|
Medium voltage motor starter
|
|
|
|
|
Monitoring system
(with data-logger system)
|
|
|
|
|
Low voltage motor starter
|
|
|
|
|
|
