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parasitic losses such as fan, battery charger, etc. The generator set shall be capable of producing the required KW (without overload) for the duration of the power outage (standby rating), under the following ambient conditions: Altitude, feet 1000 Ambient temperature range, °F 0-100 Humidity at max. ambient temp. % 80 C. Fuel and Oil Consumption. Accompanying the supplier's bid, the bidder shall supply fuel and oil consumption estimates based on engine manufacturer's data, a copy of which shall be included in the submittal. D. Governor (Engine Speed Control). The engine shall be equipped with a suitable governor to maintain frequency within limits, as specified below, by controlling engine and generator speed. 1. Type: isochronous 2. Stability: 1/4% maximum steady state frequency variation at any constant load from no load to full load. 3. Regulation: 1/4% maximum frequency deviation between no-load steady state and full-load steady state. 4. Transient: 5% maximum frequency dip on most severe motor starting condition. See paragraph 1.01. 5. Transient: 2 seconds maximum recovery time for maximum motor start. 6. The manual speed adjusting control shall be mechanical or electrical if located on the generator set or electrical if located in a remote control panel. E. Engine Crank-Start System. The engine shall be electric start, provided with a solenoid energized motor, with either positive engagement or clutch drive to the engine. 1. Lead-calcium batteries shall be furnished to provide power to the engine cranking motor. The batteries shall be designed for operation at a minimum ambient temperature of 0°F. 2. The voltage shall be as required by the engine manufacturer. 3. The batteries shall be capable of a minimum of four crank cycles (rolling) of the specified prime mover and have sufficient current available for "break-away" currents for the particular engine used at the specified worse case temperature. 4. A float type battery charger, compatible with the batteries selected, shall be furnished which shall maintain the starting batteries at full charge. The charging system shall permit charging from either the normal or the emergency power source. It shall have a high rate and low rate charging system. A voltmeter shall indicate the charge rate and the circuit will be protected by either fuses or circuit breakers. The charger or charging circuit shall be so designed that it will not be damaged during the engine cranking, achieved, for example, by a current limiting charger or a crank disconnect relay. It shall also be capable of recharging a discharged battery in 12 17-4 .S.