Vigilant MICROVAC, Руководство пользователя

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Vigilant MICROVAC Owner's Manual Document: LT0109
Appendix
Page 4-2 5 April 2000 Issue 1.31
4.3 BATTERY CALCULATIONS
The required battery capacity depends on the load connected to MICROVAC. The batteries
must be able to supply the quiescent consumption for 8 hours followed by the operating
consumption for 1.5 hours.
Note that when considering the operating consumption, the load current will be higher than
the current at which the battery manufacturer specifies the batteries and a derating factor of
1.5 should be applied. The following formula therefore applies -
CAPACITY (Ah) = (8 * QUIESCENT CURRENT) + (1.5 * OPERATING CURRENT * 1.5)
In the case where MICROVAC is fully loaded, the operating current is 2.1A plus the strobe
current of 0.9A i.e. 3A. The quiescent current is 0.21A. Applying the above formula, the
required battery capacity is 8.43 Ah. A pair of 12V 9.5Ah or better batteries would be
suitable.
In the event that MICROVAC is 50% loaded on the audio output and has no strobes
connected the operating current would be approximately 1.2A. Applying the above formula,
the required battery capacity is 4.4Ah. A pair of 12V 5.7Ah or better batteries would be
suitable.
For the 100W model, the operating current is 7A and the quiescent current is 0.3 amps.
This gives a required battery capacity of 18AH if no strobes are fitted.
For the 200W model, the operating current is 14A and the quiescent current is 0.4 amps.
This gives a required battery capacity of 35AH if no strobes are fitted.