PIU (POWER INTERFACE UNIT) - gemsbg.com

1 PIU ( power INTERFACE UNIT) 1. Unmatched patented technology, unbeatable savings2. Most trusted : Over 75,000 PIUs installed3. Cutting Edge electrical INTERFACE and design Split type modular design Unique SMD technology4. Options adaptable to any need 44 PIU variants5. Fastest real time running operation Response time of 10 micro-second6. Energy monitoring for better energy management Equipped with GPRS modemUnmatched Advantages: High upgradeability = Future proof investment Most advanced field team = Best after-sales service 2500 field engineers spread across all circles Easy serviceability & repairsHighest MTBF of 70,000 hours in the industry SpecificationCapacityRange of 5 to 50 KVAM ulti Phase LogicPIU will work on 1 Phase, 2phase or 3 Phase.

2 Input voltage range on single phase 155V 280V MechanicalCNC Fabricated rack, using CRC Sheet duly powder coated, floor size 600x400 mm & height 1800 mm. mm thick CRC sheet. Split type modular ProtectionIP 21 SafetyThe equipment will ensure IEC 60950 safety standardsMTBFAll material & workmanship will be of professional quality to ensure MTBF requirement. The MTBF of the PIU is more than 70000 , Tested for safety, EMI/RFI, ERTL complianceMicro ControllerHigh-Speed micro controllerTrue RMS for all voltage & currentAll the inputs to the measurement board will be duly protected against surge as per measurement circuit will be rated at least twice of the maximum input range, each indepen-dent for AMF & module TimeReal time & date-programmableEvent LogsLast 500 eventsRS 232/RS 485 Port for ACME use onlyFor PC INTERFACE to adjust the critical data and unload the alarms, This Port will be used for configuration of PFCs.

3 EnergyWill be able to read the energy from Meter via 485 portWill be able to measure the DG energy (Cumulative KWH & Hrs)Will be able to measure the EB energy (Cumulative KWH & Hrs)Will be able to store data of DC energy meter fetched from power plants of cell-sites of the network. Data TransferPIU will be equipped with suitable GPRS modem / GPRS DTU and able to process the data. It will be able to connect via RS485 port to DC power plants for energy meter reading or with any other specific equipment. All above reading will be extendable to NOC / TOC through GPRS storage of DC Energy will be available if meter goes will be able to store energy data / performance data and alarms / events for last 500 communication will follow TOC protocol ver 2 DescriptionStandard SpecificationLine Conditioning ModuleTypeMicro Controller based, true RMS, static line conditionerPower RatingAs Per Requirement, rated at 100% rise of the device and transformers will be as per class F specs.

4 Rated input voltage rangeFacility to operate on Voltage range - 240-480 Normal L-L / 155 280 L-NRated Output Voltage220 V +/- 10%Input Frequency Range47-53 HzTotal Harmonic Distortion (THD) %of Voltage/Current<3%Efficiency at > 75 % load and 50 degree tempera-ture>97%Dynamic response time400 V/micro-secResponse Time<10 msProtections:Voltage protection at incoming power inputHigh Voltage Disconnect (HVD) 485V after 10 millisecondsLow Voltage Disconnect (LVD) 155V after 5 seconds Voltage protection at MODULEI nput side HVD 485V; LVD 155 VOutput side - HVD 250V (imme-diate); LVD 190V after 3 sec Insulation>1000 mega ohmsInter winding capaci-tance<10 NFInput/Output isolation6 KVWindingDouble wound with copper foil shieldingIn-rush Current110 % for 60 SecondsTemperature(-5 to 55 deg)HumidityRH 95% (max.)

5 Delays:DG on loadAfter DG starts and supply is healthyBlackout delay10 seconds between mains and DG contactor cooling time5 minutesDG start attemptsThree attempts with delay between attempts ( 40 -40 -40 sec )(settable)DG Lock timeAfter three very short mains restora-tion 10-10-20 minutes, DG will run for 2hrs (settable) Command durationSettable from 0 to 30 secondsBattery charger & DG controller unitAutomatic DG battery, SMPS charger with boost/trickle charging & with constant cur-rent charging facility (12V) Charger suitable for charging the SMF/Conventional battery of upto150AH (20% of AH ca-pacity settable)Provision of Auto manual mode selection Smoke Detector:Photoelectric type -2 No, Sensitivity 3% / distribution unit -Mains MCCB, DG MCCB125 Amp.

6 ( suitable for 25 kva ) Load DistributionACDB1 2X63A, 2X32A, 1X16A, 1X6 ACDB2 - 2X63A, 2X32A, 1X16A, 1X6 Aviation light- ( -48 Volt ) with inbuilt functional feature6 AAuto Phase selector The PIU will be equipped with auto phase selector which will select any two phase or single phase out of 3 Phase. There will be a electrical and mechanical interlock between each contactor to avoid short cir-cuit in case of electronic failureSet point-for high tem-perature alarmFactory set ( ON at 38 C and OFF at 36 C)DG set measurementsMains/DG status, DG accumulated hours, DG voltage, DG Energy Mea-surement (DG KWH)Mains measurementsInput Voltage, Output voltages for line conditioning module, Mains Energy Measurement (EB KWH)Battery measurementsBattery running hrs (Accumulated)LED Indications.

7 Mains ON, DG ON, Smoke/ Fire Alarm, Over Load, MODULE fail, Fuel Low, DG fail to start, DG fail to stop, Alternator fail, LLOP, DG overload, Mains Fail, System battery low, DG battery low, HCT/HWT, High Shelter temperatureList of potential free dry contactsAlarms will be extended to NOC / TOC through changeover contact ( both NO , NC ) Four way fail, Shelter Door open/ Intruder, DG Door open, Low fuel level, Common fault -- LLOP/Alt fault/HCT/HWT/V belt/Dg fail to start/DG fail to stop, Smoke/Fire, Load on DG, DG Fail to stop, DG Fail to start, DG over load, AC fail, Shelter high temperature, Rectifier fail, Site on battery, Low battery voltage, DC fuse failStandard settingSetting in the PIU/ PIU can only change through Laptop onlyDual DG Logic(Optional)Will be provided as under.

8 The command will always go to a higher capacity DG setAfter set time of 5 mins ( set-table ) the PIU will sense the load and if it finds the load to be 80% ( settable ) of the lower DG capacity it will start the lower DG and switch off the bigger DG ACME Tele power Limited, Plot No 2, Sector 34, EHTP, Gurgaon - 122001, Haryana, IndiaPhone : +91-124-4817000, +91-124-4817777, Fax: +91-124-4817111 Email: Website.