Specifications
A- Open Cooling System For J/W & A/C Circuits’ Specifications
Cooling Tower For J/W +A/C Combined Circuit
. Cooling capacity 877500/HR
. Flow rate 2925 LPM.
. Fan motor HP 7.5 hp (approx)
. Range 08°C
. Approach 3°C
. Wet bulb temp. 30°C
. Water Outlet Temperature 33 °C (From the Cooling Tower)
. Water Inlet Temperature 41°C (To the Cooling Tower)
. Qty 1 No. / Genset (Total 5 Nos.)
Pumps For J/W+A/C Combined Circuit
. Type: Centrifugal 100 m3 / hr.
. Flow rate: 2.5 bar (approx.) it may vary w.r.t. piping route 15 kW
. Head: (may be revised w.r.t. supplier)
. Motor Power: 15 kW
. Qty: 7 Nos. (Two for standby)
Ventilation Fan Specifications
nduced Draught Fan
• Flow: 30,000 CFM (cubic ft / minute)
• Static Pressure 01 inch of Water
• Motor Hp: 5.5
• Fan Rpm: 960
• Qty: 02 Nos. / Genset
Exhaust Fan
• Flow: 20,000 CFM
• Static Pressure 01 inch of Water
• Motor Hp: 5.5
• Fan Rpm: 960
• Qty: 1 No. / Genset
Lube Oil Tank
Lube Oil Tank have a volume of 220 Liters
Lube Oil Pumps Specification
-Pumps For Lube Oil
• Type: Gear type
• Flow rate: 20-30 lit. /min.
• Motor Power: 01 eKW
• Qty: 1 Nos./ Power House
1- Feeder For Combined (Ht & Lt) Coolong Tower
Motor Power: 15 HP (approx.)
It consist of Star Delta Starting System, having
1 - Motor Breaker
2 - Fault Contact
3 - Mains Contactor
4 - Timer
5 - Relays
6 - M-O-A. Selector Switch
7 - Auxiliary Contact for Breaker
8 - Control Fuse
9 - Indications (On-off-trip)
2- Feeder For Cooling Tower Fan Motor
Motor Power: 7.5 HP (approx)
It consist of DOL Starting Circuit having
1 - Motor Breaker
2 - Fault Contact
3 - Mains Contactor
4 - M-O-A Selector Switch
5 - Control Fuse
6 - Auxiliary Contact for Breaker
7- Indications (On – Off-Trip)
3- Feeder For Induced Draught Fan Motor
Motor Power: 2 x (Power ratting of each motor corresponding to 15000 CFM to be checked from the supplier)
It consist of 2 x DOL Starting Circuits, each having
1 - Motor Breaker
2 - Fault Contact
3 - Mains Contactor
4 - M-O-A Selector Switch
5 - Control Fuse
6 - Auxiliary Contact for Breaker
7- Indications (On – Off-Trip)
4- Feeder for Exhaust Fan Motor
Motor Power: 7.5 Kw
It consist of DOL Starting Circuit having
1 - Motor Breaker
2 - Fault Contact
3 - Mains Contactor
4 - M-O-A Selector Switch
5 - Control Fuse
6 - Auxiliary Contact for Breaker
7- Indications (On – Off-Trip)
5- Feeder For Lube Oil Pumps’ Motor
Motor Power: 2 X 1 eKW (approx.) It
Consist of 2 x DOL Starting circuit, each having
1 - Motor Breaker
2 - Fault Contact
3 - Mains Contactor
4 - M-O-A Selector Switch
5 - Control Fuse
6 - Auxiliary Contact for Breaker
7- Indications (On – Off-Trip)
6- Circuit Breaker For Genset Control Panels
5 X 50 Amps (3 X 400 / 213V) MCB circuit breaker / engine with thermal protection.
10 x 20 Amps (231 V) MCB Circuit Breaker for Air-Conditioning & Lighting
7- Incoming circuit breaker with change over system for
mcc panel
3 X 400V, MCB with thermal protection. Its capacity is as per above various circuit breaker’s Amps.
Optional Contacts:
1- Load Shedding Contact: (Optional)
Normally Open Contact of a breaker which customer wants to cut off for Load Shedding Purpose
2- Collective Trouble Contact: (Optional)
Normally Open Contact of a breaker which customer wants to be cut off at the time of unexpected failure of any unit. (Thus over load shut down may be prevented at that situation)
Power Cables
• 5 x 300 mm2 / phase + 3 x 300 mm2 for neutral conductor from alternator to the bus bar. (Size of power cable may vary with respect to the site conditions)
Warning/ Shut Down Indicators (Optional)
Horn 24 V dc
Rotation Lamp 24 V dc
The above specification for MCC is for reference purpose and this is the minimum Specification for any MCC panel.
The various motors rating may vary from suppliers to suppliers
Design MCC panel after having rating of each motors from supplier.
For all motors with capacity greater than or equal to 10 HP Star-Delta starting will be used for all motors with capacity less than 10 HP DOL starting will be used.
Customer Scope of Supply
Self-excited self-regulated three phase generator
The generator consists of the main generator (built as rotating field machine), the exciter machine (built as rotating armature machine) and the voltage regulator with cos. phi-regulator, which is powered by a permanent magnet pilot exciter.
Main components
• Main stator with frame
• Main stator with 2/3 pitch winding to eliminate neutral currents of 3rd order
• Terminal box includes main terminals plus auxiliary terminals for thermistors connection and control of Regulator
• Main rotor with sufficiently sized shaft dynamically balanced as per VDI 2060, Grade Q1
• Drive end bracket with bearing
• Non-drive end bracket with bearing
• Exciter unit with permanent pilot exciter
• Power factor controller
• Voltage regulator
Electrical data and features
• Voltage adjustment: +/- 5% rated voltage (+/- 10% short-time for synchronizing)
• Static voltage accuracy: +/- 1% at no load to full load and power factor 0.8-1
• Speed variation +/- 3%, cold and hot machine
• Maximum deviation of wave form according to VDE is 5% phase to phase at open circuit
• Generator suitable for parallel operating with mains and other generators
• Sustained short circuit current at 3-pole terminal short circuit: minimum 3 times rated current for 5 Seconds.
• Overload capacity according. To IEC 34 - I/VDE 0530
• According to VDE 0530 the overspeed test ensues with 1.2 times of rated speed for 2 minutes.
Additional components:
• Electronic voltage regulator
• Electronic power factor regulator
• 3 thermistors for winding temperature monitoring
The following alternator supervisions are integrated with the multi-transducer (max. 8 functions Simultaneous):
• Overload/short-circuit [51], [50]
• Over voltage [27]
• Under voltage [59]
• Asymmetric voltage [64], [59N]
• Unbalance current [46]
• Failure Excitation [40]
• Over frequency [81>]
• Under frequency [81<]
• Lockable operation mode selector switches positions:
• "OFF"
No operation is possible, running set will shut down;
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