Piu Basics

7/29/2019 Piu Basics

1/23

POWER

INTERFACE

UNIT

(PIU)


2/23

PIU : INTRODUCTION

The system features:

Static Mains Regulator.

Built- in isolationtransformer.

Micro-controller based

AMF Panel.

Security & Safety Alarm

System.

Lightning & SurgeProtection.

AC Distribution.

SMPS Battery Charger for

DG battery.

High/Low Voltage

Disconnection. Modular Arrangement.

Integrated System for

easy installation &

operation.

User Friendly Interface

NMS.


3/23

S.NO PARAMETERS SPECIFIED

1Lightning Protection 10/350_s, 100kA @let through voltage

240V

200V

Response time < 10ms

4 N Earth Protection Over voltage with complete true isolation

5 Manual Error Protection Imported Machine Interlock accessories

6 AMF Panel Micro controller based true RMSequipment, GEN ON-OFF Control & Alarms

7 Line Conditioner Static Line Conditioner withIsolation Input two phase - 240 485V(Extended 265 470V)

Isolation Output single phase - 200 240V

8 Distribution for external load As per customer requirement

9 Dimension 1800mm x 600mm x 400mm

10 Weight 300Kg.

A Sample Specs Sheet


4/23

Lightening

Protection

Surge

Protection

Auto Phase

Selector

Line

Conditioning

Unit

AC

DistributionPanel

Input

MCB

To SMPS

To Air Conditioner

To Power Points

To Lights,

Fans, etc

To Aviation

Lamp

L1L2

L3

N

P1

P2

P

N

Block Diagram of PIU


5/23

Lighting and surge protector

PIU of acme telepower isincorporated with lightning

protection of 10/ 350 micro

sec, 100 KA @ let through

voltage < 700 ; where as for

surge protection of about

8/20 micro sec ,15 KA .


6/23

Auto phase selector

It will select another two healthy

phase out of three phases.Healthy phase - Voltage across

phases between 240V to 480V


7/23

Central processing unit

Brain of PIU,

responsible for

performing various

functions like

measuring, display,adjustment and

interface, alarm,

automation and

rectification and

coordination between

various internal aswell external

parameters.


8/23

Line Conditioner Unit

Equipment operates with

microprocessor-based

controller to provide

correction of mains even inmicro seconds. System

supports to operate on

phase-to-phase basis to get

rid of neutral problem, as it

is very common. Mains

utilization even at extremelow voltage 140V for air-

condition operation


9/23

Alarm Interface

Extension of alarms from

cpu card.

ALARM S AND MEASURES TO

BE TAKEN


10/23

AC Distribution Panel

AC Distribution panel is

provided for load termination.

SMPS, Air conditioners,Power Point and Tube Light

for Aviation Lamp etc are

being connected to various

points. Surge arresters for

class I protection are

provided on the inputinterface panel before the

output gets divided to MCBs


11/23

Automation Layout ( New)


12/23


13/23

Alarm

Extension

from PIU,

Color

Codes foreach


14/23

Alarm From PIU

SN Type of Alarm Safety Status in existing PIU Alarm Cable Pair Details

1 Mains fail Alarm Available Brown(Com),Red(NO)

2 Door open (FROM SENSOR) Alarm Available Brown(Com),Brown(NO)

3 Smoke & fire Safety+Alarm Available Black(com),Blue(NO)

4 Room Temperature high Alarm Available Brown(NC), Grey(NO),White(com)

5 Low fuel level (at 50% fuel) Alarm Available Black(com),Orange(NO)

6 Load on DG Alarm Available Grey(com),Red(NO)

7 DG on Alarm Available Red(NO),orange(NC),Green(Com)

8 DG fail to start Alarm Available Green(NC),Red(NO),White(Com)

9 DG fail to Stop Alarm Available Blue(NC),ORANGE(NO) ,White(COM)

10 DG Common fault

Alarm+ Safery( incase of

Alternator fault and

HCT/LLOP) Available Blue(Com),White(NO),Red(NC)

10.a a. LLOP Safety+Alarm Available Availble in common fault pair

10.b c. Alt.fault

LED indication + Alarm as

DG Common fault Available Availble in common fault pair

10.c d. HCT/HWT

LED indication + Alarm as

DG Common fault Available Availble in common fault pair

10.d e. V belt

Safety+ Alarm as DG

Common fault( can be

connected as HCT Port) Available Availble in common fault pair

10.e f. LWL

Safety+ Alarm as DGCommon fault( can be

connected as HCT Port) Available Availble in common fault pair


15/23

BHARTI 11:30:35T:0000000.5 VGEN:000V

TEMP:25.0OC VDC:27.0V

MAINS OK

BHARTI 12 JAN,2004T:0000000.5 VGEN:000V


OP1:230V OP2:000V

+yes

-- NONO

menu

LOG

Scroll

888888

888888

DISPLAY

888888

RESET( +)

(-)

MENU

NOT USED

SCROLL

POWER ON

CPU

MAINS OK

MAINS FAIL

ROOM TEMP HIGH

SMOKE / FIRE

EMERGENCY

OVER LOAD

LCU FAIL

L1-L2

I

MAINS VOLTAGE

O/P CURRENT

FREQUENCY

DG

MAINS

DG FAIL TO START

DG FAIL TO STOP

ALTERNATOR FAULT

LLOPDG FUEL LOW

ENGINE TEMP HIGH

NA

DG BATTERY LOW

CENTRAL SUPERVISIORY UNIT


16/23

888888

888888

888888

MAINS VOLTAGE

O/P CURRENT

FREQUENCY

CENTRAL SUPERVISIORY UNIT

POWER ON

CPU

MAINS OK

MAINS FAILROOM TEMP HIGH

SMOKE / FIRE

EMERGENCY

OVER LOAD

LCU FAIL

DG FAIL TO START

DG FAIL TO STOP

ALTER. FAULT

LLOPDG FUEL LOW

ENGINE TEMP

HIGH

OVER SPPED

DG BATTERY LOW

L1-L2

I

DG

MAINS

+yes

-- NONO

menu

LOG

Scroll

Emergency OFF DisableON/OFF TIMER

ON TIME 18:30

OFF TIME 06:30

HIGH ROOM TEMP. Cut off

32OC

DEFAULT FACTORYBHARTI 09:30:30

T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0V

MAINS OK

HIGH VOLT CUT OFF

485V

LOW VOLT CUT OFF

240VHIGH VOLT CUT IN

470V

LOW VOLT CUT IN

265V

DG HIGH VOL CUT OFF

250V

DG LOW VOL CUT OFF

195V

OVER LOAD

70A

DG LOCK

5 MIN

DG LONG LOCK

10 MIN

TEMP LIMIT FORBATT

34OC

P.PBATT MIN VOLTAGE

23.5V

PP/ BATT NOR. VOLTAGE

25.0V

HIGH ROOM TEMP. CUT IN

35OC

FIRST START PULSE

2 SEC

SECOND START PULSE

3 SEC

THIRD START PULSE

4 SEC

DG STOP PULSE

40 SEC

DATE/ TIME SET

11:30:30

11.07.2004

HIGH Engine Temp DisableBHARTI 09:30:30


MAINS OK


17/23

START

MAINS 240-480IN BEST OF

2 PHASE

MAINS OK

LCU

OP1

180-250

OK

LCU FAIL

NOT OK

NO

VDC =23.5V

TEMP 340C

BATT ON DG SENSE

OKNOT OK

CH

E

C

K

1

2

DG IS RUNNING

DG STOP

YES

NOYES

BHARTI 09:30:30

T:0000000.5 VGEN:000V


START

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG SENSE

BHARTI 09:30:30

T:0000000.5 VGEN:000V


MAINS OK

BHARTI 09:30:30

T:0000000.5 VGEN:000V


BATT ON


18/23

DG SENSE

LLOP NO( PIU)

LLOP NC(B

C)HCT NC(PIU)

DG START

OK

DG VOLTAGE

195-250

NOT OKOK

NOT OK

LLOP NC(PIU)

LLOP NO (BC)

DG LOCKFOR 5/10 MIN.

DG STOP

OK NOTOK

DG FAULT

ALARM

3 TIMES

RETRY

DG FAULT

WITH LLOP AL.

AFTER 5/10 MIN

DG ON

DG FAULT

DG FAIL TO

START

AFTER 3 RETRY

DG CHECK

DG IS RUNNING

VOLTAGE

YES

NO

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG SENSE

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG FAULT

BHARTI 09:30:30


DG START

BHARTI 09:30:30


DG CHECK

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG LOCK

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG ON

BHARTI 09:30:30

T:0000000.5 VGEN:000V

TEMP:25.0O

C VDC:27.0VDG STOP

BHARTI 09:30:30T:0000000.5 VGEN:000V


DG FAULT


19/23

DG ON

LLOP NC ( PIU)

DG VOLTAGE

MAINS VOLTAGE5 Hrs TIME

LLOP NC

DG VOLTAGEBEYOND 195-250

MAINS OK

240-480

5 Hrs DG

DG CONT. RUN

DG STOPDG FAULT

LLOP ALARM

DG STOP DG FAULTALTER.FAIL

DG STOP GOTO 1

DG STOP GOTO 2

WAIT MAINS

& GOTO 1

WAIT MAINS& GOTO 1

SITE ON DG

DG FAIL

TO STOP ALM

IF NOT

1

2

DG DISC.

DG DISC.

DG DISC

No load 5 min

.

DG DISC.

DG VOLT=0

LLOP NO(PIU)

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG ON

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG STOP

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG FAULT

BHARTI 09:30:30

T:0000000.5 VGEN:000V


DG DISC


20/23

Trouble Shooting


21/23

Trouble Shooting Contines


22/23

Dos and Donts


23/23

Thank YouThank You

ACME Tele Power LtdACME Tele Power Ltd

Documents

Piu Basics