Power Interface Unit

(PIU)

Unmatched Advantages:

High upgrade ability = Future proof investment.

Most advanced field team = Best after-sales services

Services

Easy serviceability & repairs

Highest MTBF of 70,000 hours in the industry

temperature.

1. Unmatched patented technology, unbeatable savings

2. Most trusted : Over 150,000 PIUs installed

3. Cutting edge electrical interface and design

> Modular design > Unique SMD technology

4. Options adaptable to any need to cater to wide sphere of cell sites

5. Fastest real time running operation

> Response time of 10 micro-second

6. Energy monitoring for better energy management

> Equipped with GPRS modem

Enabling High Performance, Sustainable and Cost Effective Telecom Solutions

ACME’s PATENTED POWER INTERFACE UNIT (PIU) is an ideal solution for Telecom Sites in areas

having wide fluctuations and surges in the mains supply. PIU System houses all electrical equipment

required in the shelter within a rack space of 600mmX500mm and offers an efficiency over 97%.

ACME developed the PIU System on thyristor-based technology having true RMS measurement and

monitoring capability. Thus, poor AC mains is no more a problem as it offers wide input mains range and

even diminishes the use of the diesel generator due to unhealthy mains.

Type

IP Protection

Capacities

Up gradable Capacities

Normal Range Input

Wide Range Input

Auto Phase Selection Logic

Output Voltage Rage

Operating Temperature

Humidity

Voltage Protection at Incoming Power Input

Voltage Protection at MODULE

Set point-for high Temperature Alarm

Set poit for Site Battery cut off Voltage

Mechanical

Mounting Arrangement

State-of-the-Art Technology

Time

Event Logs

Safety Interlock

DG Set Measurements

Mains Measurements

Battery Measurements

LCD Display and Keypad

LED Indications:

Alarms Potential Free Dry Contacts

Standard Setting

Delays:

Blackout Delay

DG Start Attempts

DG Cooling Time

DG Lock Time

Stop Command Duration

DG on Load

Energy Monitoring (Optional)

3 in 3 out 3 in 1 out 1 in 1 out

15/22.5/30/50 KVA 5 / 7.5 / 12.5 / 15 KVA 5 / 7.5 / 15 KVA

Upgradable to 15 / 25 / 30 KVA

240-480 V (L-L) 240-480 V (L-L) 140-280 (L-N)

155-480 V (L-L) 155-480 V (L-L)

Healthy phase selection - 2 best phase out of 3 phase input.

220 / 230 V + 10% (L-N)

(-5 to 55 deg)

RH 95% (max.)

a) High Voltage Disconnect (HVD) 485/285V after 10 milliseconds

b) Low Voltage Disconnect (LVD) 240/155 /140V after 5 seconds

a) Input side – HVD 245/485V; LVD 240/155 /140 V

b) Output side - HVD 250V (immediate); LVD 190V after 3 sec

Factory set ("ON" at 38°C and "OFF" at 36°C). DG will start if shelter temperature goes

above set temperature

Factory set - 47 V DC, Generator will start if site battery voltage goes below set battery voltage

IP 21 for Indoor Application & IP54 for Outdoor Application

CNC Fabricated Rack, using CRC Sheet duly powder coated, maximum required foot print area is

600(W)x500(D) mm in case of Indoor Application. Outdoor Cabinet with foot print area - 800(W)x800 (D)

Floor and wall mounted arrangements for Indoor PIU System. Floor mounted arrangement for Outdoor PIU

· High-Speed Micro Controller

· True RMS measurement for all Voltage & Current

· All the inputs to the measurement board will be duly protected against surge as per IEEE-62.41

Real time & date-programmable.

Last 500 events .

There will be electrical/mechanical interlock between contractor to avoid short circuit in case of electronic failure

Auto/ manual status, DG accumulated hours, DG voltage, DG Energy Measurement (DG KWH).

Input Voltage, Output Voltages for line conditioning module, Mains Energy Measurement (EB KWH).

Battery running hrs (Accumulated), Battery current and energy measurement via Energy Meter.

Man to machine interface via LCD display and keypad to monitor PIU operation and setting changes.

Mains ON, DG ON, Smoke/ Fire Alarm, Over Load, MODULE fail, Fuel Low, DG fail to start, DG fail to stop,

Alternator fail, LLOP, Mains Fail, DG battery low, HCT/HWT, High Shelter Temperature.

Alarms will be extended to NOC / TOC through changeover contact (both 'NO', ‘NC’).Mains fail, Door open/

Intruder, Low fuel level, Smoke/Fire, Load on DG, AC fail, Shelter high temperature, Rectifier fail, Low

Battery Voltage, DC fuse fail, Common fault -- LLOP/Alt fault/HCT/HWT/V belt/Dg fail to start/DG fail to stop

Factory default settings can be changed through LCD display and keypad or Laptop interface as per site

requirement via authenticated password.

10 seconds between mains and DG conductor changeover.

Three attempts with delay between attempts ( 40 -40 -40 sec) (settable).

5 minutes.

After three very short mains restoration 10-10-20 minutes, DG will run for 2 hrs (settable) continuously.

Settable from 0 to 30 seconds.

After DG starts and supply is healthy.

Will be able to read the energy from Meter via 485 port.

Will 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

Description Specification

Data Transfer (Optional)

Dual DG/Sequential DG Logics (Optional)

Battery Charger (Optional) & DG

Interface Unit

Smoke Detector (Optional)

LPD & SPD (Optional)

Input - Mains MCCB, DG MCCB

Load Distribution MCBs

Line Conditioning Module

Real time based Aviation Light

Type

Power Rating

Rated Input Voltage Range

Rated Output Voltage

Input Frequency Range

Total Harmonic Distortion (THD) % of Voltage/Current

Efficiency at rated load and rated input

Voltage & 50 degree temperature

Dynamic Response Time

Response Time

Insulation

Inter Winding Capacitance

Input/Output Isolation

Safety

Winding

MTBF

In-rush Current

In-rush Current

PIU will be equipped with suitable GPRS Modem / Ethernet Modem and able to process the data.

All above reading will be extendable to NOC / TOC through GPRS Modem.

Local storage of DC Energy will be available if meter goes faulty.

Controller will be able to store energy data / performance data and alarms / events for last 500 events.

PC interface via RS232 communication port for event log transfer and parameter configuration.

Server data communication will follow ACME protocol.

Two types of separate logics are available to control 2 Nos. DGs & cater the Loads.

1. Dual DG Logic: This product controls two nos. of DGs & ensures their running in Swap mode of operation

& also ensures switching ON, another DG in case of any DG goes faulty.

2. Sequential DG Logic: This product controls two dissimilar capacity DGs & takes decision to run Higher

Capacity, Lower Capacity or both Dgs as per Load conditions. This is more suitable for sites where DG

capacity up gradation is required.

Automatic DG battery, SMPS charger with constant current charging facility (12V) .

Charger suitable for charging the SMF/Conventional battery of upto150AH.

Provision of Auto manual mode selection.

Photoelectric type, Sensitivity 3% / ft.

25/50/100 KA , Class B &C or Class B+C

Of suitable ratings as per Product Capacity.

Of suitable ratings for SMPS Rectifiers, Aircons, Lighting etc. as per Product Capacity.

Optional for real time based operation of aviation light.

Micro Controller based, true RMS, static line conditioner .

As Per Requirement, rated at 100% capacity.

Facility to operate on Voltage range -

Normal range (2:1) - 240-480 (L-L)

Wide range (2:1) - 155-480 (L-L)

Normal (1:1) - 140 – 280 (L-N)

220 V +/- 10%. Or 230 V +/- 10%

47-53 Hz .

<3%

>97%

400 V/micro-sec.

<10 ms.

>1000 mega ohms.

<10 NF.

6KV.

The equipment will ensure IEC 60950 safety standards .

Double wound with copper foil shielding.

All material & workmanship will be of professional quality to ensure MTBF requirement. The MTBF of the PIU

is more than 70000 hrs.

ERTL Tested for safety, EMI/RFI compliance. CE compliance

110 % for 60 Seconds.

Description Specification

It will be able to connect via RS485 port to DC Power Plants for Energy Meter reading or with any other specific equipment.

ACME CLEANTECH SOLUTIONS LIMITEDPlot No.152, Sec. 44, Gurgaon -122002, Haryana, India,

Tel: + 91-124-7117000, Fax: + 91-124-7117001

E-mail: info@acme.in, Website: www.acme.in