Chapter V. ELECTRICAL EQUIPMENT OF THE TANK
(Please note: due to the large number of cryillic characters in this section, I have used the closest Latin characters to make converting this section easier)
TFI$>Oz| The electrical equipment of the tank consists of:
LPS]TG\ 1. Generator and four accumulators.
b0aV?A}th 2. Starter motor, turret traversing motor, electric fan, interior and exterior lighting, horn, wireless set and intercommunication system.
[;$9s=:[ 3. Driver's switch panel, turret switch panel, rotary base junction and earth switch.
OR<%h/ \f 8fC5O Plate 50 - Electrical Layout Of Tank
I`uOsZBO/ - Turret traverse motor - Horn - Transfer box - Horn button - Starter button - Green lamp - Oil cock - Plug-in rosette - Lamp illuminating clinometer - Turret roof - Lamp illuminating panel
i'MpS (The strength of the current is indicated on the fuses. The figure in circles on the leads indicate the number of the lead. The number on leads from the turret panel have terminal numbers except Nos. 39, 40, 41. If each end of a lead has a different designation then both designations will be in the circle).
.2x`Fj;o1 The electrical system of the tank consists of two circuits, one of 24V for the starter and turret traverse motor and the other 12 V for the remaining components.
k*|WI$ The Generator 4563/A and the Voltage Regulator PPT 4576/A
&H:2TL! The generator consists of a 24V shunt dynamo. The generator is mounted on the right side of the engine and is fastened by two securing bands. It is driven by the engine through a slipping clutch. The maximum capacity of the generator is 1 kilowatt.
+P|Z1a -jB The accumulators begin to be charged when the crankshaft reaches a speed of 600-650 rpm.
Ry`Y + On the body of the generator there are three terminals "+R" , "K-p" and "+h". (ed: note these figures in quotes are barely legible and may be incorrect) "+R" is the positive terminal.
DgGG*OXY The generator works simultaneously with the voltage regulator which is mounted in the left instrument panel.
u iR[V~ The voltage regulator consists of three controls: the cut-out, current limiter and voltage regulator.
^+u/Lw& The cut-out has the following purposes:
gT#hF]c: 1. To engage the generator automatically when owing to increasing revs, its voltage becomes higher than that of the accumulators (25 to 27 volts).
~mk>9Gp 2. For the automatic disengagement of the generator when its voltage is less than the voltage of the accumulators.
^
Q The voltage regulator maintains the voltage of the generator constant in spite of the changing engine revs. The constant current depends on the load. with loads of 30 Amps the voltage is 25 V. and travelling on the level at is 30-32V.
6 \NBU,lY The current limiter limits the current from the generator to within 38-42 amps.
NU(YllPB 6I-Qq?L[H Plate 51 - Lay-out of coils of Voltage Regulator PPT 4576/A
i _YJq;( The connection between the generator and the voltage regulator (Plate 51 ) From the terminal "+R" of the generator, the current travels to the lower terminal of the junction box on the right engine block and thence to the terminal "+R" of the voltage regulator. From the voltage regulator the current goes from the terminal "W" to the upper terminal "W" of the generator. From the terminal "5" of the voltage regulator the current travels to the terminal No.12 of the driver's switch panel, the ammeter and through terminal No. 6 across the fuse-box and fuse (4Oa) into the accumulator.
=@s {H + INSTRUCTIONS F0R REMOVING THE ACCOMULATORS. w'&QNm> 1. Switch off the earth switch.
IP+.L]S 2. Remove the ammunition stored in the engine bulkhead.
%3es+A@ 3. Open the doors of the engine bulkhead.
!BEl6h 4. Unscrew the negative terminal of the right front accumulator. Disconnect the bridge connecting the right and left group of accumulators. Disconnect the terminals of the left front accumulators.
yv2wQ_({ 5. Unscrew the nuts and remove the clamp holding the front accumulators.
>"<<hjKJ 6. Remove the front accumulators and take out the central securing board of the baskets of the front and rear accumulators.
zdgSqv 7. Remove the rear accumulators.
@!,W]?{ To replace the accumulators the reverse order applies.
dH~i To connect the earth switch it is necessary to strike its head with the palm of the hand and press the knob at the side of the switch.
T3In0LQ CT- 700 STARTER
N'=b8J-fF The starter is mounted on a special platform on the gearbox with its starting relay to the right.
Y~P*
!g It is a 24 volt starter motor of 15 h.p. and consists of the following main parts: electric motor, control coupling, control relay, and starting relay.
g&fq)d The principal part of the starter is the series motor.
=S<