Kw and kvar values

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vololiberista
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Kw and kvar values

Post by vololiberista » Sat Oct 21, 2017 9:42 am

Can anyone recall what the ballpark values of KW and kvar are? I can only find acceptable differences in the manual. I believe there is a formula that can calculate the values.

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Re: Kw and kvar values

Post by Jelle Hieminga » Fri Oct 27, 2017 7:41 pm

You’ll need Paul for this one I’m afraid. I’m sure he’ll be along soon.
Buttons . . . check. Dials . . . check. Switches . . . check. Little
colored lights . . . check.

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1103
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Re: Kw and kvar values

Post by 1103 » Tue Nov 21, 2017 5:51 pm

The only info I have from A4O-AB's Flight Manual is max permissible continuous load on each Generator is 36 kW, but overloads not exceeding 48kW are permissible for periods not exceeding 5 mins.

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vololiberista
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Re: Kw and kvar values

Post by vololiberista » Thu Nov 23, 2017 3:18 pm

1103 wrote:
Tue Nov 21, 2017 5:51 pm
The only info I have from A4O-AB's Flight Manual is max permissible continuous load on each Generator is 36 kW, but overloads not exceeding 48kW are permissible for periods not exceeding 5 mins.
Many thanks for that. I can now programme that into my sim model.

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Re: Kw and kvar values

Post by 1103 » Thu Nov 23, 2017 8:13 pm

In normal ops the load sharing should remain within 2 kW/4 kVAR.

AC sys V & Freq should remain within 400 +- 10 Hz & 115 +- 6 Volts.

DC sys voltages should remain between 25 & 28 Volts.

Batt ammeter readings remain zero (normal ops)

TRU ammeter readings do not exceed 150 amps.

When starting the APU with the AC buses powered the #1 Batt must be selected to BATT ISOL prior to APU starting due to the starter motor current draw being greater than the #1 TRU fuse rating. One the starter motor cycle is complete the batt sw must be set to power on to maintain power to the APU fire protection circuit.

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vololiberista
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Re: Kw and kvar values

Post by vololiberista » Sat Nov 25, 2017 4:49 pm

Many thanks for that. I'll post a "work in progress" video in the the next few days hopefully.

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