Projection Welding Technique

PPN
WWW.CEAWELD.COM
VERTICAL STROKE
SPOT AND PROJECTION
WELDERS
Suitable for both spot and projection
welding, PPN models fully satisfy
a wide range of the heaviest large
production industrial applications.
Equipped with microprocessor control, safety
concomitant side buttons and solenoid valve,
upon request they can be fitted with special
controls to suit any special configurations.
Excellent welding on all weldable metals
Synchronous ignition SCR group with phase shift welding current adjustment
to eliminate switching transistors
Thermostatic protection on the SCR group
High welding currents with low consumption
Set up ti me reducti on thanks to qui ck and easy modi fi cati on of
electrodeholders platens opening without any intervention on the secondary
circuit (patent pending)
Self-lubricated pneumatic components to eliminate oil deposits and to
safeguard the environment from contaminants
Water cooled secondary circuit, i.e. electrodes, electrodeholders, platens and
transformer, to avoid any overheating
Water cooled copper electrodeholders with adjustable height
Electrode force adjustable by pressure reducer group equipped with a
manometer and filter for automatic air impurity expulsion
Upper electrode movement by self-lubricated double effect pneumatic
cylinder fitted with speed regulator, end stroke shock-absorber and silencer
for compressed air discharge
Solenoid valve to control welding cylinder
Safety cycle start by means of the concomitant side buttons or, as alternative
only if the operator can work in safe conditions, by electric pedal. Either
option can be chosen by a selector with removable key
Cycle stop emergency button.

WELDING TOGETHER
PPN 28 - 53
ARE EQUIPPED WITH:
Lower round arm with
adjustable height and
lateral adjustment
Electrodeholders with
electrodes for spot
welding and ability to
easily fit barholders for
projection welding
Lower arm holder can
be adjusted for use
with larger arm gap
Spot welding
Projection welding
with bars for mesh
UPON REQUEST
ALSO AVAILABLE WITH:
Different length arms
(Optional)
Lower arms with pressed-in
electrode (for welding pipes or
similar) and longer electrodeholder
on the upper arm (Optional)
Special version with platens only for
projection welding (PPN 53)
PPN 83 - 103 - 153 - 253
PPN 83, 103, 153 and 253, are
all supplied with lower platen
adjustable in height and fitted
wi t h T- sl ot s, enabl i ng t he
quick assembly of barholders,
electrodeholders or any dedicated
tooling for a specific application.
Pl at ens gap i s easi l y and
quickly adjustable without any
intervention on the secondary
circuit (patent pending).
Manual valve for upper head
descent without pressure
for cleaning, centering and
ordinary maintenance
of the electrodes
Upper head low
friction driving system
for precision welding
(except PPN 83).
A) Spot welding
B) Barholders welding
for mesh
C) Projection welding
A)
A)
C)
C)
B)
B)

WWW.CEAWELD.COM
SPECIAL VERSIONS
ELECTRONIC CONTROLS
DIGIT 8 WS 708 MPS 300 R1
Single or multi spot
Two 24 V DC solenoid valves
50/60 Hz frequency
Mains voltage compensation
Weld/no weld switch
8 programs
Half period welding time
Pre-heating current
50/60 Hz frequency
Error message
Weld/no weld switch
Constant current facility
Limit current monitoring
8 programs
Half period welding time
Spot counter
Pre-heating current
50/60 Hz frequency
Error message
Weld/no weld switch
F (N)
I (A)
t (s)
t (s)
g m g a b
f
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t
m
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F (N)
t
S
T
A
R
T
b
fk
I (A)
FUNCTIONS DIGIT 8 WS 708 MPS 300 R1
a Pre-squeeze time
b Squeeze time
c Pressure contact
d Preheating time ---
e Cooling time ---
f Slope up
g Welding time
Welding current
h Pulse interval time
i Holding time
l Cycle end contact
m Pause time

WELDING TOGETHER
PPN 28 - 53
PPN 83 -103 - 153 - 253
PPN 28 53 83 103 153 253
A mm 395 435 400 400 400 445
A (Optional)
MIN. mm 650 650 650 650 650 650
MAX. mm --- 750 --- --- --- ---
B mm --- --- 445 445 445 490
C
MIN. mm 140 180 145 145 145 200
MAX. mm 400 510 300 300 300 330
D
MIN. 690 615 800 800 800 865
MAX. 950 945 955 955 955 995
mm 50 60 --- --- --- ---
mm 30 35 30 35 35 35
mm 19* 19* 19* 25* 25* 25*
E mm --- --- 150 180 180 200
F mm --- --- 150 180 180 200
G mm --- --- 63 63 63 63
T --- --- 2 3 3 3
TECHNICAL DATA
Single phase input 50/60 Hz
Rated power at 50%
Short circuit power
Max. welding power
Installed power
Cross section connecting cables
Delayed Fuse
Open Circuit Voltage
Short circuit current
Max. welding current
Thermal secondary current at 100%
Work stroke
Electrode force max 600 kPa (6 bar)
Water consumption a 300 kPa (3 bar)
Dimensions
Weight
PPN
28 53 83 103 153 253
V 400 400 400 400 400 400
kVA 25 50 80 100 150 250
kVA 86 142 266 366 575 763
kVA 69 113 210 293 460 610
kVA 20 38 65 78 120 195
mm
2
25 35 50 50 95 120
A 63 100 150 200 300 500
V 4,5 5,9 8,3 9,4 11,5 12,5
kA 19 24 32 39 50 61
kA 15,2 19 25 31,2 40 49
kA 3,9 6 6,8 7,5 10,1 14,2
mm 60 65 100 100 100 100
daN 230 470 736 900 1200 1884
l/min 6 7 8 8 8 8
mm 1005 1070 1115 1115 1170 1210
mm 410 430 400 400 400 460
mm 1425 1520 1650 1650 1800 1800
kg 200 335 560 580 610 900
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Other voltages available on request
These power sources are built for industrial environment use. EMC (CISPR 11): class A
2020H209 - 09/2013 - PPN
ISO 9001: 2008

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