TYPE 23POWER &

DISTRIBUTION

PO COLES

NOTEThe full presentation covers high voltage systems,

switchboards, 600, 440, 115 volt systems, services andEssential Services, the P&D system.

This was used to develop and teach techniciansAnd the electrical damage control teams who

would also have to attend my electrical workshopsFor CPD.

All system content has been removed.

Aims To develop our understanding of the Type 23 Electrical Power

System and develop the P&D model:

Covering: The basic components of Generators.

How 450/600v Switchboards and ACBs operate.

440v services through EDC’s and MCCB’s.

Distribution via Fuse Panels and Transformers.

Freestanding ROCOS.

Generator Content Removed

Main Rotor & 3Ø Output Stator

PMG – AVR SupplyPilot Exciter Rotor

Main Bearing

Generator

Main Rotor & 3Ø Output Stator

PMG – AVR SupplyPilot Exciter Rotor

Main Bearing

Main Exciter Rotor Armature& Stator

AVR Control

Generator

Main Rotor & 3Ø Output Stator

PMG – AVR SupplyPilot Exciter Rotor

Main Bearing

Main Exciter Rotor Armature& Stator

AC to DCRotating Rectifier

AVR Control

Generator

3Ø Output

Main Rotor & 3Ø Output Stator

PMG – AVR SupplyPilot Exciter Rotor

Main Bearing

Main Exciter Rotor Armature& Stator

AC to DCRotating Rectifier

AVR Control

AVR Feedback

Generator

77v29A

160HzAC

49.5v197A

DCOutput

AVR

PMG Stator

Pilot Exciter Main Exciter Rotating Rectifier

Generator

Stator (99 Slots)

AC Full Wave rectified to DC

Main Generator

3Ø 61.2Hz 600v

Feedback Signal

24 poles 8perØ16 poles

Generator

Novamax ACB’s Content Removed

Spring Charging (Motor)

Manual Ratchet & Pawl

Solid State Trip Unit

Shock Protection

0.8 Power Factor lag

Novamax ACB’s

Spring Charged(White Discharged)

Close ACBOpen ACB

Charging Handle(Moves Crank)

Breaker Status(Logic Indicator)

OXO Cube(Indicates I1/I2 Trip)

Novamax ACB’s

(B)

(A)

(C)

(E)

(F)

Novamax ACB’s

(A)

(B)

Novamax ACB’s

A 1.9s

B 4s

C 9s

D 16s

E 24s

BatteryCheck &Charge(red LEDilluminates)

BatteryModule

I1,I2Reset

I1 – Long Time Over Current

I2 – Short Time Over Current

2x 6x

2.5x 8x

3x 10x

4x 12x

5x

0.5x 0.9x

0.6x 0.95x

0.75x 1.00x

0.8x

0.1 0.6s

0.2 0.7s

0.3 0.8s

0.4 0.9s

0.5 1s

Trip Indication

(Switches Orange when

tripped)

I3 – Instantaneous Over Current

Novamax ACB’s

Control CablesCables(from MEPS)

Easy Access Fuses

(1)

(2)

(3)

(4)

Novamax ACB’s

Switchboard

Common 600v Rail

Common 600v Rail

Switchboard600v from Generators

600v Services

DG F2 600vDG F2 600v

Common 600v Rail

Switchboard

EMACB

DG F2 600vDG F2 600v

Common 600v Rail

600vMGFSupply

Switchboard

MG SetsContent Removed

Switchboard

600v

450v

Switchboard

600v

450v

Switchboard

Switchboard

600v

450v

F2F1 F1 Alt MG-F SS

I/C

I/CMG-F

EMACB

440v Services

MCCB’s2 Types - 100A or 250A

440V 60Hz 3Ø

Content Removed

MCCB’s250A MCCB’s fitted in Switchboards to supply EDC’s

Summary Developed our understanding of the Type 23 Electrical Power

System and developed the P&D model:

Covering: The basic components of Generators.

How 450/600v Switchboards and ACBs operate.

440v services through EDC’s and MCCB’s.

Distribution via Fuse Panels and Transformers.

Freestanding ROCOS.

AnyQuestions?