Guardian-technologies 04758-2 Manuale Utente Scaricare il pdf (Pagina 13)

3. Check utility power source voltage across termi-

nals N1 and the transfer switch neutral lug; then

across terminal N2 and neutral. Nominal line-to-

neutral voltage should be 120 volts AC.

4. When certain that utility supply voltage is compat-

ible with transfer switch and load circuit ratings,

turn OFF the utility power supply to the transfer

switch.

5. Set the generator's main circuit breaker to its

OFF (or open) position. Initial tests will be con-

ducted at no-load condition.

6. On the generator panel, set the AUTO/OFF/

MANUAL switch to MANUAL. The engine should

crank and start.

7. Let the engine warm up for about five minutes to

allow internal temperatures to stabilize. Then, set

the generator’s main circuit breaker to its ON (or

closed) position.

DANGER



Proceed with caution! Generator power voltage

is now supplied to the transfer switch. Contact

with live transfer switch parts will result in dan-

gerous and possibly fatal electrical shock.

8. Connect an accurate AC voltmeter and a fre-

quency meter across transfer switch terminal

lugs E1 and E2. Voltage should be 242-252 volts;

frequency should read about 61-63 Hertz.

9. Connect the AC voltmeter test leads across ter-

minal lug E1 and neutral; then across E2 and

neutral. In both cases, voltage reading should be

121-126 volts AC.

10. Set the generator’s main circuit breaker to its

OFF (or open) position. Let the engine run at no-

load for a few minutes to stabilize internal engine

generator temperatures.

11. Set the generator's AUTO/OFF/MANUAL switch to

OFF. The engine should shut down.

NOTE:

It is important not to proceed until certain that

generator AC voltage and frequency are correct

and within the stated limits. Generally, if both AC

frequency and voltage are high or low, the engine

governor requires adjustment. If frequency is cor-

rect, but voltage is high or low, the generator’s

voltage regulator requires adjustment.

2.4 GENERATOR TESTS UNDER LOAD

To test the generator set with electrical loads applied,

proceed as follows:

1. Set generator’s main circuit breaker to its OFF

(or open) position.

2. Set the generator's AUTO/OFF/MANUAL

switch to OFF.

3. Turn OFF the utility power supply to the transfer

switch, using the means provided (such as a util-

ity main line circuit breaker).



Do not attempt manual transfer switch opera-

tion until all power voltage supplies to the

transfer switch have been positively turned off.

Failure to turn off all power voltage supplies

will result in extremely hazardous and possibly

fatal electrical shock.

4. Manually set the transfer switch to the STANDBY

position, i.e., load terminals connected to the

generator's E1/E2 terminals. The transfer switch

operating lever should be down.

5. Set the generator's AUTO/OFF/MANUAL switch

to MANUAL. The engine should crank and start

immediately.

6. Let the engine stabilize and warm up for a few

minutes.

7. Set the generator’s main circuit breaker to its ON

(or closed) position. Loads are now powered by

the standby generator.

8. Turn ON electrical loads. Apply an electrical load

equal to the full rated wattage/amperage capacity

of the installed generator.

9. Connect an accurate AC voltmeter and a frequen-

cy meter across terminal lugs E1 and E2. Voltage

should be greater than 230 volts; frequency

should be greater than 58 Hertz.

10. Let the generator run at full rated load for 20-30

minutes. Listen for unusual noises, vibration or

other indications of abnormal operation. Check

for oil leaks, evidence of overheating, etc.

11. When testing under load is complete, turn OFF

electrical loads.

12. Set the generator's main circuit breakers to their

OFF (or open) positions.

13. Let the engine run at no-load for a few minutes.

14. Set the AUTO/OFF/MANUAL switch to OFF. The

engine should shut down.

2.5 CHECKING AUTOMATIC

OPERATION

To check the system for proper automatic operation,

proceed as follows:

1. Set the generator’s main circuit breaker to it’s

OFF (or open) position.

2. Check that the AUTO/OFF/MANUAL switch is set

to OFF.

3. Turn OFF the utility power supply to the transfer

switch using the means provided (such as a utility

main line circuit breaker).

Section 2 — Post Installation Start-up and Adjustments

Air-cooled 7 kW, 12 kW and 15 kW Generators

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 55 56

Commenti su questo manuale

Nessun commento

Guardian-technologies 04758-2 Manuale Utente Pagina 13

Commenti su questo manuale

Prodotti e manuali riguardandi Generatori Guardian-technologies 04758-2