POWER INTERFACE
UNIT
(PIU)
PIU : INTRODUCTION The system features: Static Mains Regulator. Built- in isolation transformer. Micro-controller based AMF Panel. Security & Safety Alarm System. Lightning & Surge Protection. AC Distribution. SMPS Battery Charger for DG battery. High/Low Voltage Disconnection. Modular Arrangement. Integrated System for easy installation & operation. User Friendly Interface NMS.
S.NO PARAMETERS SPECIFIED
1 Lightning Protection 10/350_s, 100kA @let through voltage<700V
2 Surge Protection 8/20_s , 15 Ka
3 High Voltage / Low Voltage Protection(True RMS)
Input > 240V< 485 V(Extended – 265 – 470V)Output < 240V> 200VResponse 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
LighteningProtection
SurgeProtection
Auto PhaseSelector
Line Conditioning
Unit
ACDistribution
Panel
InputMCB
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
Lighting and surge protector
PIU of acme telepower is incorporated 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 .
Auto phase selector
It will select another two healthy phase out of three phases. Healthy phase - Voltage across phases between 240V to 480V
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 as well external parameters.
Line Conditioner Unit
Equipment operates with microprocessor-based controller to provide correction of mains even in micro 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 extreme low voltage 140V for air-condition operation
Alarm Interface
Extension of alarms from cpu card.
ALARM S AND MEASURES TO BE TAKEN
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 input interface panel before the output gets divided to MCBs
Automation Layout ( New)
Alarm Extension from PIU, Color Codes for each
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.faultLED indication + Alarm as DG Common fault Available Availble in common fault pair
10.c d. HCT/HWTLED 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 DG Common fault( can be connected as HCT Port) Available Availble in common fault pair
BHARTI 11:30:35T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VMAINS OK
BHARTI 12 JAN,2004T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VOP1:230V OP2:000V
+yes
- NO- NO
menu
LOG
Scroll
888888
888888
DISPLAY
888888
RESET( +)(-)MENUNOT USEDSCROLL
POWER ONCPUMAINS OKMAINS FAILROOM TEMP HIGHSMOKE / FIREEMERGENCYOVER LOADLCU FAIL
L1-L2
I
MAINS VOLTAGE
O/P CURRENT
FREQUENCY
DGMAINS
DG FAIL TO STARTDG FAIL TO STOPALTERNATOR FAULTLLOPDG FUEL LOWENGINE TEMP HIGHNADG BATTERY LOW
CENTRAL SUPERVISIORY UNIT
888888
888888
888888
MAINS VOLTAGE
O/P CURRENT
FREQUENCY
CENTRAL SUPERVISIORY UNIT
POWER ONCPUMAINS OKMAINS FAILROOM TEMP HIGHSMOKE / FIREEMERGENCYOVER LOADLCU FAIL
DG FAIL TO STARTDG FAIL TO STOPALTER. FAULTLLOPDG FUEL LOWENGINE TEMP HIGHOVER SPPEDDG BATTERY LOW
L1-L2
I
DG
MAINS
+yes
- NO- NO
menu
LOG
Scroll
Emergency OFF DisableON/OFF TIMERON TIME 18:30OFF TIME 06:30
HIGH ROOM TEMP. Cut off32OCDEFAULT FACTORYBHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VMAINS OK
HIGH VOLT CUT OFF485VLOW VOLT CUT OFF240VHIGH VOLT CUT IN470V
LOW VOLT CUT IN265VDG HIGH VOL CUT OFF250VDG LOW VOL CUT OFF195VOVER LOAD70ADG LOCK5 MINDG LONG LOCK10 MINTEMP LIMIT FOR BATT34OCP.P BATT MIN VOLTAGE23.5VPP/ BATT NOR. VOLTAGE25.0VHIGH ROOM TEMP. CUT IN35OCFIRST START PULSE2 SECSECOND START PULSE3 SECTHIRD START PULSE4 SECDG STOP PULSE40 SECDATE/ TIME SET11:30:3011.07.2004
HIGH Engine Temp DisableBHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VMAINS OK
START
MAINS 240-480IN BEST OF
2 PHASE
MAINS OK
LCUOP1
180-250
OK
LCU FAIL NOT OK
NO
VDC =23.5VTEMP 340C
BATT ON DG SENSE
OK NOT OK CHECK
1
2
DG IS RUNNING
DG STOP
YES
NOYES
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VSTART
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG SENSE
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VMAINS OK
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VBATT ON
DG SENSE
LLOP NO( PIU) LLOP NC(BC)HCT NC(PIU)
DG STARTOK
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 FAULTWITH LLOP AL.
AFTER 5/10 MINDG ON
DG FAULTDG FAIL TO
START
AFTER 3 RETRY
DG CHECK
DG IS RUNNINGVOLTAGE
YES
NO
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG SENSE
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG FAULT
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG START
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG CHECK
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG LOCK
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG ON
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG STOP
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG FAULT
DG ON
LLOP NC ( PIU) DG VOLTAGE
MAINS VOLTAGE5 Hrs TIME
LLOP NC
DG VOLTAGE BEYOND 195-250
MAINS OK240-480
5 Hrs DGDG CONT. RUN
DG STOPDG FAULT
LLOP ALARM
DG STOPDG FAULT
ALTER.FAIL
DG STOP GOTO 1
DG STOP GOTO 2
WAIT MAINS & GOTO 1
WAIT MAINS & GOTO 1
SITE ON DG
DG FAILTO STOP ALM
IF NOT
1
2
DG DISC.
DG DISC.
DG DISCNo load 5 min
.
DG DISC.
DG VOLT=0LLOP NO(PIU)
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG ON
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG STOP
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG FAULT
BHARTI 09:30:30T:0000000.5 VGEN:000VTEMP:25.0OC VDC:27.0VDG DISC
Trouble Shooting
Trouble Shooting Contines……
Do’s and Don’ts
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