Control Box Gp 1/24/7 Specifications; Control Box Type Gp 1/24/7, Modified; Performance Check And Sealing Of The Unit - Fiat 411 R Service Manual

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after 30 minutes of operation at' the above conditions
stop the generator and open the switch I. Bring the
generator back to a speed of 3500 R.P.M.; aofiusi ihe
load of the adjusting spring by acting on the tongue
(5, Fig. 152), and the rheostazf R fo obtain a regulating
current and voltage of 6.6 to 7.4 A and 28 1/, check
the sfabi/iiy and the accuracy of the regufafing
current by stopping the generator and running rr
A again up to a speed of 3500 R.P.M.
Performance check and sealing of the unit.
Once set, close the hot control unit with cover and gasket before it undergoes the bench test as from
instructions of page 100 and following. Then put the paint seal on one of the cover fastening screw heads
before returning it to the owner.
Overhauling or repairs must be entrusted to FIAT Service Shops only.
Whenever a control box is opened for overhaul or repair, operate if for a certain length oi time without
the cover on so that it will warm up and eliminate any residual dampness on its elements, if any.
W ' WCiO»NTRfOl. Box GP1_i24,i'i sneoarrcznrsons (inf
-_._-______.,. . . - - W _. _ W __ -.. . _ _.
Description I Data 3.
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Cut-out relay:
5 -~ 'lead current for thermal stabilization . . . . . . . , . . . . . . . . . . . . ,1; 30 V
—- out-in voltage . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . 4 25,1 to 25,9 V
_ — voltage variation for Contact closing stroke . . . . . . . . . _ . . . . . . ' > 0,2 V
I ' ~ reverse current . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . 6 to 14 A
' — air gap, contacts closed (axis A-A. Fig. 159) . . . . . , . . . . . . . . . 6,25 mm (0.010 in)
6 D I -
-~ gap between contacts (cl. Fig. T50) . . . . . . . . . . . . . . . . . . . . . 0,64 to 0,? mm [ A325 to 3,830 in)
l i Voltage regulator:
— batteries capacity at 30V . . . . . . . . . . . . . , . . . . . _ . . . . . 100
Ah l
— average load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 A
i —~ rated voltage after thermal stabilization at a room temperature of 50°i~ 3° C ;
(122: 3?" F} for 30 minutes . . . . . . . . . . . . . . . . . . . . . , . . 28,? to 29,7 V
»~ feed voltage for thermal stabilizaeion . . . . . . . . . . . . . . . . . . . . ;~= 38 V l l
— air goo (C. Fig. 149) . . . . - . . . . . . . - . . . . . . . . . . . . . . . 0,98 to 1,11 rnm [(3.039 to 0.044 in} 1
1 1
3 Current regulator: 2
— rated current on battery at 50°i 3° C {t22i 37° F} room temperature, after I
thermal stabilization . . . . . . . . . . . . . . . . . . . . . r . . . . . . ; 5,6 to 7,4 A
- rated current check voltage . . . . . . . . . . . . . . . . . . . . . . . . 28 V
l — air gag: (C, Fig. 149) . . . . . . . . . . . . . . . . . . . . . . . . . I 0,99 to l,1fi mm (0.039 to 0.044 in)
Resistances, Fig. 159: E
I — regulation resistance (5) . . . . . . . . . . . . . . . . . . . . . . . . . . l 136 to 144 ohm '
' -» damping resistance (10) . . . . . . . . . . . . . . . . . . . . . . . . . . 60 ohm
— additional resistance for voltage regulator (7) . . . . . . . . . . . . . . . 73 to 77 ohm'?
-~ additional resistance for cut-out relay and current regulator (11) . . . . . . ?'3 to Tr' ohm*
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Note: The generator check and adjustment speed is 3500 r.p.m. V i
('fl See data for modified groups under the ioilowing heading.
CONTROL BOX TYPE GP 'H24/7, MODIFIED (Dwg.n0 4035433).
The modified control box 4085433 diners from the previous type (4055883) as follows:
—~ the series and parallel windings of the cut-out relay are mounted in succession instead of being super—
imposed;
~ the value of supplementary resistances for the voltage regulator (7, Fig. 151}, cut-out relay and current
regulator (1i, Fig. 15*!) have been lowered from Y3-7? ohms. to 56,5 to 63,5 ohms. These resistances.
together with those placed under the base oi the control box, are not furnished as spare parts.
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