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0 ISSUED STIE STIE STIN SET. 97

REV. DESCRIPTION PREP.D CHK.D APPR.D DATE

Il presente documento RISERVATO ed di propriet dell'AGIP. Esso non sar mostrato a Terzi n sar utilizzato per scopi diversi da quelli per i quali stato inviato.

GENERAL SPECIFICATIONS

CONTROL PANELSFOR ENGINE GENERATOR SET

20214.EQP.ELE.SDS

Rev. 0

September 1997

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20214.EQP.ELE.SDSRev. 2 September 1997Sheet 2


FORWARD

Rev. 0 Sheet 22September 1997Issue in conformity with EEC directivesThis specification replaces and supersedes the following specification:a) 02986.EQP.ELE.SPC: General Specification - CONTROL PANELS FOR ENGINE

GENERATOR SET

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INDEX

1. GENERAL

1.1 Scope1.2 Reference documents

2. DESIGN

2.1 General2.2 Definition2.3 Control system

2.4 Function capabilities

3. TECHNICAL DESCRIPTION

3.1 Functions3.2 Special requirements for emergency generators3.3 Internal components of the panel3.4 Engine status display on fron panel3.5 Electrical interconnecting

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1. GENERAL

1.1 Scope

The present specification defines the basic fundamental technical requirements for thedesign of a control panel to operate a diesel or gas internal combustion engine drivengenerator.

1.2. Reference documents

The following are the reference documents of this specification:

20164.EQP.ELE.SDS Company Specification - Electrical control panels and desks.

20213.EQP.ELE.SDS Company Specification - Diesel or gas driven internalcombustion engine generator.

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2. DESIGN

2.1 General

Generator Ser and realtive Panel will be define in Data Sheet.

2.2 Definition

Table 1 define Location and type of control panels.

TABLE 1Panel definition

DEFINITION GSCP - 01 GSCP - 02 GSCP - 03

INSTALLATION

TYPE

PANEL LOCATEDIN THE

GENERATORROOM

PANEL LOCATEDOUTSIDE THEGENERATOR

PANEL LOCATEDIN THE

GENERATOR

CONTROLSYSTEM A B C

2.3 Control System

The generator set can be controlled by means of one of two system listed in TABLE 1.Said system are typical to the selected type of control panel.

The contro panel must be installed accordin to TABLE 1 and to the functions they carryout.

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2.4 Function capabilities

Functions developed by the various control panels are shown in the table below.

TABLE 2Control System

PANEL FUNCTION CAPABILITIES

Activation and management of start, stop, regulation and controlrelated to the conditions of manual/automatic/test.

GSCP-01

Monitoring of operating parameters, detection of failure and shutdown causes, signalling with ISA annunciator.

Processing of controls and signals from/to remote control panels.

Programming of automatic periodical test.

GSCP-02 As per GSCP-01 but with operational capabilities with local-remoteselector in LOCAL POSITION.

GSCP-03

Operational capabilities alive only with LOCAL-REMOTE GSCP-02selector in REMOTE.

Monitoring is limited to essential duty parameters and main failureshut down causes.

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3. TECHNICAL DESCRIPTION

3.1. Functions

Operative functions activated by the three different control panels GSCP-01, GSCP-02and GSCP-03 are listed in TABLE 3, 4, 5:

TABLE 3Control panel GSCP-01

POS. FUNCTIONSINHIB./MAN./AUT./TEST

CONTROL MODE SELECTOR

1 INHIBITION OF ANY START OPERATION INHIBITED

2 START, STOP, VOLTAGE CONTROL ANDSPEED CONTROL

MANUAL

3 STARTING AND STOPPING BY: AUTOMATIC

3.1 1st. cause

A signal arriving from an external logic

by means of a permanent voltage free

contact located elsewhere

a.1 Automatic start of generator at the closure ofthe above mentioned contact (with a timedelay range from 0 to 120sec.)

the start sequence shall be foreseen for 3start attempts at fixed time intervals

the crank motor shall be suddenautomatically disengaged at engine start.

if after 3 starts attempts the engine fails tostart the system shuts down automatically

3.1.2 Nominal excitation conditions activatedimmediately when rated RPM is reached..

3.1.3 Automatic monitoring of the engine andgenerator with the protections listed in otherparts of this specification

3.1.4 Permission (with a time delay range from 0 to120sec.) to put the generator on load once

the condition "ready to be charged" isreached.

3.1.5 Tripping of load (with a time delay range from0 to 120sec.) at the opening of a contactoroperated by an external signal and automaticstop after the necessary idling time to coolthe engine.

3.1.6 Predisposition for a new operation.

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TABLE 3

Control panel GSCP-01(continued)

POS. FUNCTIONSINHIB./MAN./AUT./TEST

CONTROL MODE SELECTOR

3.1 1st. cause

Periodical automatic test (if required in

data sheet) by means of a contactor

operated by any external voltage free

contact or a contactor operated by a

programmable timer

AUTOMATIC

3.2.1 Automatic start of generator as per above

a.1, a.2, a.3

3.2.2 Automatic stop of the generator at the end ofthe prefixed test time.

3.2.3 The same functions as per above a.4, a.5, a.6in the event of case "a" occurring during thetest

4 AUTOMATIC START WITH PROTECTIONTEST ACTIVATED AND EVENTUALINSERTION INTO THE NETWORK WITHTHE SAME FUNCTIONS AS PER POINTb.3

TEST

TABLE 4Control panel GSCP-02

SERVICE SELECTOR

POSITION

POS. FUNCTION

LOCAL-REMOTE.

INHIBITED

AUTOMATIC

MANUAL

TEST

1 INHIBITION OF ANY STARTING LOCAL

INHIBITED OPERATION

LOCAL INHIBITED

2 START, STOP , VOLTAGE LOCAL MANUALCONTROL AND SPEED CONTROL

LOCAL MANUAL

3 STARTING AND STOPPING AS LOCALAUTOMATIC PER 3.1.1. pos.3

LOCAL AUTOMATIC

4 AUTOMATIC STARTING AS PER 3.1.1.LOCAL TEST pos.4

LOCAL TEST

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TABLE 5

Control panel GSCP-03

SERVICE SELECTOR

POSITION

POS. FUNCTION

LOCAL-REMOTE.

INHIBITED

AUTOMATIC

MANUAL

TEST

1 START, STOP, VOLTAGE REMOTECONTROL AND SPEED CONTROL

LOCAL INHIBITED

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3.2 Special requirements for emergency generators

In case of the control system failure it shall be possible to guarantee the operability ofcertain controls (start/stop - emergency stop - speed/voltage change) by maintaining themain safe protections of the generator set and overriding the ones of minor importance.

3.3 Internal components of the panel

The apparatuses to be fitted with in the control panel are indicated in TABLE 6.However supplier will be responsible of to add, change or select different componentsneeded to guarantee optimal system operation versus the specific project philosophy andcontrol panel operation capabilities required by company.

TABLE 6Internal components of the panel

POS. FUNCTIONPANEL TYPE

GSCP-01 GSCP-02 GSCP-03

A A COMPONENTS FOR GENERATOR SETCONTROL MANAGEMENT ANDREGULATION

A.1 Programmable logic controller (PLC)or anelectromechanical device capable ofautonomously managing all the operatingsequence of "start" "stop" of the generator,and to monitor abnormal operating conditions- alarm and inhibited - realising a completeannunciation as per the sequence ISA 2c.

---

A.2 Engine speed control card: capable ofmonitoring the speed of the engine by meansof an impulse signal proportional to the speeddetected by a magnetic sensor or pick-up,directly facing the ring gear of the engine.

---

A.3 Speed regulator: capable of driving the gasthrottling valve actuator based on informationfrom the above mentioned pick-up or from amotorised potentiometer installed in thepanel.

---

A.4 Motorised potentiometer: capable of transmitincrease/decrease signals to the actuator onthe speed regulator mentioned.

---

A.5 Motorised potentiometer: capable of transmitincrease/decrease signals for the regulationof the voltage of the electric machine.

---

A.6 Load dispatcher: capable of sharing the loadequally amongst the units connected inparallel to guarantee the functioning of"droop" that gives rise to the regulation of thespeed of the engine as a function of the load.

---

A.7 Weekly cycle program for automatic periodictests

(Nota 1)

(Nota 1)

---

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TABLE 6

Internal components of the panel(continue)



B BATTERIES AND BATTERY CHARGER

B.1 Automatic battery charger of adequatecapacity to maintain full charge of the servicebatteries

(Nota 1)

(Nota 1)

---

B.2 Sealed batteries of adequate capacity tosustain the memory of the programmable

logic controller PLC

(Nota 1)

(Nota 1)

---

B.3 Automatic battery charger of adequatecapacity to maintain the full charge of PLCbatteries

(Nota 1)

(Nota 1)

---

B.4 Automatic battery charger of adequatecapacity to maintain the start battery in a fullycharged state

(Nota 1)

(Nota 1)

---

B.5 N.2 automatic battery charger for electricstart system in order to:

always maintain the batteries on charge

realise an automatic changeover

between the two batteries in such a waythat one battery being out of servicedoes not in any way prejudice theoperability of the other

(Nota 1)

(Nota 1)

---

C AUXILIARY DEVICES

C.1 N.2 voltage transformers (secondary/110V)for the supply of measuring circuits

---

C.2 Space heater ---C.3 Thermostatic control of the heater as above

C.4 Automatic breaker of adequate capacity forthe protection of A.C. and D.C. auxiliarycircuits

C.5 Necessary relay circuits

C.6 Terminal strips and connectors enough for allneeded interconnections

C.7 16 A.+ GRD Auxiliary receptacle ---

NOTE: (1) If required in Data Sheet

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3.4 Engine status display on front panel

The following status display shall be provided on the engine panel:

TABLE 7

Engine status display on front panel



A A SOLID STATE VISUAL SIGNAL

DISPLAYS:

A.1 Operating conditions visual display(green colour) with:

A.1.1 Engine running ---A.1.2 Engine failure ---A.1.3 Engine inhibited (Nota 1) (Nota 1) ---A.1.4 Generator ready to be charged (Nota 2) (Nota 2) ---A.1.5 Auxil iary voltage ON (D.C.) ---A.1.6 Auxil iary voltage ON (D.C.) ---A.1.7 Service battery charger ON (Nota 3) (Nota 3) ---

A.1.8 PLC battery charger ON m (Nota 3) (Nota 3) ---A.1.9 Starting battery in rapid charge (Nota 3) (Nota 3) ---A.1.10 Alternator battery charger in operation (Nota 3) (Nota 3) ---A.1.11 Electric air compressor starter activated (Nota 3) (Nota 3) ---A.1.12 Fuel gas pressure ON (Nota 4) (Nota 4) ---A.1.13 Electric fuel pump ON (Nota 5) (Nota 5) ---A.1.14 Speed regulator ON ---A.1.15 Electric radiator inserted (Nota 6) (Nota 6) ---A.1.16 Automatic periodic test (Nota 3) (Nota 3) ---A.1.17 Generator remote test (Nota 3) (Nota 3) ---A.1.18 Oil pre-heater ON ---A.1.19 Water pre-heater ON (Nota 6) (Nota 6) ---A.1.20 Panel anti-condensate heater ---

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TABLE 7

Engine status display on front panel(continued)



A.2 Engine malfunction visual display

(yellow colour) with:

A.2.1 Service battery voltage low (Nota 3) (Nota 3) ---A.2.2 PLC battery voltage low (Nota 3) (Nota 3) ---A.2.3 Starting-battery voltage low (Nota 3) (Nota 3) ---A.2.4 Service battery charger out of service (Nota 3) (Nota 3) ---A.2.5 PLC battery charger out of service (Nota 3) (Nota 3) ---A.2.6 Starting battery charger out of service (Nota 3) (Nota 3) ---A.2.7 Starting air pressure low (Nota 3) (Nota 3) ---A.2.8 Starting air circuit out of service (Nota 3) (Nota 3) ---A.2.9 PLC malfunction (Nota 3) (Nota 3) ---A.2.10 Diesel fuel level low (Nota 5) (Nota 5) ---A.2.11 Make-up lube oil level low ---A.2.12 Sump lube oil level low

---A.2.13 Lube oil temperature high ---A.2.14 Cooling water pressure ---

A.3 Engine inhibited (red colour)

A.3.1 PLC malfunction (Nota 3) (Nota 3) ---A.3.2 Fuel Gas pressure low (Nota 4) (Nota 4) ---A.3.3 Diesel fuel exhausted (Nota 5) (Nota 5) ---A.3.4 Lube oil pressure low ---A.3.5 Sump lube oil level low ---

A.3.6 Cooling water level low (Nota 6) (Nota 6) ---A.3.7 Electric radiator inhibited (Nota 6) (Nota 6) ---A.3.8 Speed regulator off ---A.3.9 Automatic starter failure ---A.3.10 Engine temperature high ---A.3.11 Engine over speed ---A.3.12 Emergency stop ---A.3.13 Stop by remote control (Nota 7) (Nota 7) ---A.3.14 Base protections operated (3.4-3.10-3.11) --- ---

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TABLE 7




A.4 Generator duty conditions (green

colour)

A.4.1 Circuit break open ---A.4.2 Circuit break closed ---A.4.3 Protection operated ---A.4.4 Windings temperature high (Nota 3) (Nota 3) ---A.4.5 Bearing temperature high (Nota 3) (Nota 3) ---A.4.6 Alternator space heater ON ---A.4.7 Panel space heater ON ---

5 Generator temperature alarms ---A.5.1 1st bearing support: temp. high (Nota 3) (Nota 3) ---A.5.2 2nd bearing support: temp. high (Nota 3) (Nota 3) ---A.5.3 1st stator winding: temp. high (Nota 3) (Nota 3) ---A.5.4 2nd stator winding: temp. high

(Nota 3) (Nota 3) ---A.5.5 3rd stator winding: temp. high (Nota 3) (Nota 3) ---6 Complex threshold temperatures alarms

A.6.1 1st bearing support temp. high (Nota 3) (Nota 3) ---A.6.2 2nd bearing support temp. high (Nota 3) (Nota 3) ---A.6.3 1st stator winding temp. high (Nota 3) (Nota 3) ---A.6.4 2nd stator winding temp. high (Nota 3) (Nota 3) ---A.6.5 3rd stator winding temp. high (Nota 3) (Nota 3) ---

B INSTRUMENTATION CONTROL

B.1 Engine section

B.1.1 Service battery voltmeter (Nota 3) (Nota 3) ---B.1.2 PLC battery voltmeter (Nota 3) (Nota 3) ---B:1.3 Starting battery voltmeter (Nota 3) (Nota 3) ---B:1.4 Service battery ammeter (Nota 3) (Nota 3) ---B:1.5 PLC battery ammeter (Nota 3) (Nota 3) ---B.1.6 Starting battery ammeter (Nota 3) (Nota 3) ---

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TABLE 7




B.1.7 Number of starts counter ---B.1.8 Interventions counter ---B.1.9 Tachometer complete with contactor for

signal from magnetic pick-up

B.1.10 Oil pressure gauge m

B.1.11 Oil temperature gauge m

B.1.12 Water temperature gauge m

B.1.13 Exhaust gas temperature gauge (Nota 3) (Nota 3)

2 Generator section

B.2.1 Voltmeter

B.2.2 Ammeter

B.2.3 Frequencymeter

B.2.4 Wattmeter ---B.2.5 Var-meter ---B.2.6 Power-factor indicator ---B.2.7 Excitation voltmeter ---B.2.8 Excitation ammeter ---B.2.9 Kilowattmeter ---B.2.10 Alternator temperature gauge ---

C SELECTORS

1 Engine section

C.1.1 Two position, key operated, changeover forD.C. supply insertion (0-1)

---

C.1.2 Two position, local-remote operation selector ---C.1.3 Four position, key operated, changeover

(Inhibited-Manual-Automatic-Test) ---

C.1.4 Two position changeover for service batterycharger (float-full)

---

C.1.5 Three position changeover for speedregulation (increase-zero-decrease)

2 Generator section

C.2.1 Four position voltmeter selector (L1/L2,L2/L3, 0, L3/L1)

C.2.2 Three position selector for voltage control

(INCREASE-0-DECREASE)

C.2.3 Three position key operated excitationchangeover (Manual-0-Automatic)

---

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TABLE 7




D SELECTORS

D. Two position selector for display insertion (0-1)

---

D. Two position selector for audio alarm silencer(0-1)

---

D. Two posit ion selector for protectionsoverriding in emergency conditions (0-1) ---

E PUSH BUTTONS

E.1 Start (Nota 8) (Nota 8)

E.2 Stop (Nota 8) (Nota 8)

E.3 Emergency stop (Nota 9) (Nota 9)

E.4 Lamps test

E.5 Audio alarm silencer ---E.6 Flashing alarm lamps OFF ---

E.7 Normal functions restore E.8 Fuel pump start (Nota 3-5)(Nota 3-5) ---E.9 Fuel pump stop (Nota 3-5)(Nota 3-5) ---F RHEOSTATS

F.1 Voltage calibration ---

Note:(1) Failure causes summary pos. A2(2) Shutdown causes summary pos. A3(3) If required in the supply specification

(4) For gas engine (generator)(5) For diesel engine (generator)(6) For water cooled engine (generator)(7) Normal functions restored by operator(8) Dual system if double start battery banks are required(9) With mechanical lock

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3.5 Electrical interconnections

The necessary features to electrically connect the control panel with all the variouscomponents of the generation, distribution panel and the plant central control shall beprovided.

In addition, the terminal blocks/connectors shall be made available and separated inrelation to they various interconnecting functions.

The interconnections to be provided are listed in the following tables:

TABLE 8 : - interconnecting with engineTABLE 9: - interconnecting with generatorTABLE 10: - interconnecting with generator auxiliary services

TABLE 11 - interconnecting with electrical distribution boardTABLE 12: - interconnecting with electrical control deck (E.C.D.)TABLE 13: - interconnecting with instrumentation/telemetry panelTABLE 14: - interconnections - GSCP-02/GSCP-03

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TABLE 8

Interconnecting with engine



1 Electric starter (magneto ignition) (Nota 1) (Nota 1) ---

2 Starting motor or air electrovalve ---

3 Speed regulator pressure switch ---

4 Actuator (screened) ---

5 Magnetic pick-up m (Nota 2) (Nota 2) ---

6 Alternator rectifier battery charger ---

7 Pressure switch: oil pressure low ---

8 Oil pressure transmitter ---

9 Transmitter: water temperature high ---

10 Water temperature transmitter ---

11 Centrifuge contactor w m ---

12 Exhaust gas temperature sensor (Nota 3) (Nota 3) ---

13 Oil heater ---

14 Oil heater insertion thermostat ---

15 Water heater ---

16 Water heater insertion thermostat ---

17 Remote switch of start motor (Nota 5) (Nota 5) ---

18 Thermostat: oil temperature high ---

19 Level: oil level low ---

20 Thermostat: water temp. low (Nota 4) (Nota 4) ---

21 Level: oil level high ---

Notes:(1) Restarting relay(2) Tachometer(3) If required .(4) For water cooled engines(5) For engines with electric start

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TABLE 9

Interconnecting with generator



1 A.C.supply (3 phase + neutral) for servicesand measurement

---

2 Alternator heater ---

3 Excitation circuits ---

4 Overexcitation compensation toroid ---

5 Load distribution device ---

6 Supply to measuring circuit and loadDistribution device

---

7 Windings temperature sensor (Nota 1) (Nota 1) ---

8 Bearings temperature sensor (Nota 1) (Nota 1) ---

Notes:(1) If required

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TABLE 10

Interconnecting with generator auxiliary services



1 Engine electric radiator (Nota 1)(Nota 1) ---

2 Fuel electrovalve ---

3 Services or start battery (Nota 2)(Nota 2) ---

4 Level: fuel level low (Nota 3)(Nota 3) ---

5 Level: make-up oil level low ---

6 Pressure switch: start air press ---

7 Starting air circuit out of service (Nota 7)(Nota 7) ---

8 Level: fuel exhausted (Nota 3)(Nota 3) ---

9 Pressure switch: gas pressure low (Nota 4)(Nota 4) ---

10 Level: water level low (Nota 5)(Nota 5) ---

11 Ambient temperature gauge (Nota 2)(Nota 2) ---

12 Differential pressure switch: electric (Nota 1)(Nota 1) ---

13 Pressure switch: electro air compressorcontrol

(Nota 6)(Nota 6) ---

Notes(1) For water cooled engines with electric radiator(2) If required(3) For diesel engines(4) For gas engines(5) For water cooled engines(6) For engines with independent air start system(7) For engines with air start system

TABLE 11Interconnecting with electrical distribution board



1 A.C. auxiliary supply 380V 3-phase + neutral,50 Hz

(Nota 1)(Nota 1) ---

2 D.C. auxiliary supply 24V (Nota 2)(Nota 2) ---

Notes:

(1) From electric board for the supply of generator auxiliary services(2) From DC board as alternative to the independent local batteries system

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TABLE 12

Interconnecting with electrical distribution board



1 Controls

1.1 Generator activation (start-stop) ---

1.2 Emergency stop ---

1.3 Engine speed variation (Nota 1)(Nota 1) ---

1.4 Generator voltage variation (Nota 1)(Nota 1) ---

1.5 Paralleling between voltage regulators ---

2 Signals

2.1 A.C. voltage presence: auxil iary ---

2.2 D.C. voltage presence: auxiliary ---

2.3 Generator in auto/manual mode ---

2.4 Generator in local/remote mode ---

2.5 Engine running ---

2.6 Generator ready to be loaded ---

2.7 Engine malfunction ---

2.8 Engine inhibited ---

2.9 Remote stop ---

2.10 Minimum services/PLC battery voltage low (Nota 2)(Nota 2) ---

2.11 Starting battery voltage low (Nota 2)(Nota 2) ---

2.12 Start air circuit pressure low (Nota 3)(Nota 3) ---

2.13 PLC malfunction (Nota 2)(Nota 2) ---

Notes:(1) Depends on selector position (inhibited - manual - auto test)

(2) If required(3) For engines with air start system

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TABLE 13

Interconnecting with instrumentation/telemetry panel



1 Controls

1.1 Start/stop ---

1.2 Emergency stop ---

2 Signals

2.1 Engine running ---

2.2 Generator ready to be loaded ---

2.3 Engine malfunction ---

2.4 Engine inhibited ---

2.5 Remote stop ---

2.6 Generator on auto/manual mode ---

2.7 Generator on local/remote mode ---

2.8 Service/PLC battery voltage low (Nota 1)(Nota 1) ---

2.9 Starting battery voltage low (Nota 1)(Nota 1) ---

2.10 Starting air circuit pressure low (Nota 1)(Nota 1) ---

Notes:(1) If required

TABLE 13Interconnecting GSCP-02/GSCP-03 control panel

POS. FUNCTION REF. NOTE

1 SUPPLY

1.1 3Ph. 100V 50Hz supply (1)

2 CONTROLS

2.1 Start/stop (2)

2.2 Speed regulation (2)

2.3 Voltage regulation (2)

3 SIGNALS

3.1 Base protections operated (3)

Notes:(1) Alternator voltage measurement(2) Depending from local-remote changeover position(3) Selected by Supplier as essential for generator protection purpose

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