Home  »  Products » Selenium Rectifier

Product Details

The H and W series are the result of continuous research and development programme aimed at reliable, low-cost, compact selenium rectifier elements and stacks. High standard of quality are further insured by Westing house plants & machinery and the expert technical know-how available at Insel Rectifiers.

 

The aluminium based selenium rectifier elements are manufactured by an improved, closely controlled vaccum deposition process. This new process ensure stable, non- ageing, low loss characteristics permitting higher current density operation while maintaining a reliability standard which has been a by in the selenium rectifier field for over thirty years.

IRI selenium rectifier ’s elements are available in two categories, series H & w. Both series are available in Voltage grades up to 36 volts.

H O G LA 06 B 01
H O G LA 06 B 01
Rectifiers Series Max. RMS input Voltage per series element Element Code Mechanical structure/ spacing Number of series elements per arm Circuit Arrangement Number of parallel path per arm
H— 0—22 C L 2Digits Single Phase 2 Digits
Normal D LA A-Half wave
Current E B- Brige –ve Outer
Density 1—30 G C-Centretap –veCommon
K
M N-Centretap
Q -ve common
2—36 R D-Voltage doubler
W- Higher Y Three Phase
Current Density S G- bridge
3—25 N E- Halfwave +ve Outer
T R- Half Bridge –ve Outer
P S– Hexaphase
4– 33

 

CURRENT RATING OF IRI ELEMENTS IN STACKS
RIES
GRADE

Elements
Active
Area in
Sq.com
Mech.
Structure
Maximum
recom-
mended
lelments
in stack

Single Phase
3 Phase
Bridge
& Half
Wave

Hexa
Phase

Dim.In
mm
Half
Wave

Bridge
‘H’ SERIES IN 0,1,2,3, &,4 Volatage grades C
D
E
F
G
K
M
Q
R
Y
S
N
T
P
17×17
23X23
36X23
36X36
50X50
76X50
76X76
100Z62
102X76
100×83
100×100
152×76
152×100
305×76
1.9
4.0
6.75
11
23
35
50
62
80
74
90
107
152
221
L
L
LA
L
L
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
40
40
40
40
40
40
32
40
32
40
32
40
32
42
32
42
32
42
32
42
32
42
32
42
32
0.08
0.23
0.30
0.52
0.65
1.10
1.35
1.65
2.02
2.75
3.00
3.00
3.30
3.50
4.00
3.75
4.50
4.00
5.00
5.50
6.00
6.00
7.50
10.25
12.30
0.16
0.46
0.60
1.04
1.35
2.20
2.50
3.30
3.75
5.50
6.00
6.00
6.60
7.00
8.00
7.50
9.00
8.00
10.00
11.00
12.00
12.00
15.00
20.50
24.60
0.24
0.51
0.75
1.38
1.75
2.85
3.15
4.27
4.82
7.15
8.50
8.00
8.80
10.70
12.00
11.25
13.50
12.00
15.00
14.30
18.00
18.00
22.00
26.65
35.00
0.35
1.02
1.50
2.76
3.50
5.70
6.30
8.55
9.45
14.30
17.10
16.00
18.00
21.45
24.00
22.50
27.00
24.00
30.00
28.60
34.00
36.00
44.00
53.20
63.85

Note:
1.  For ‘W’ Series add 40% to the current rating given above for ‘H’ Series.
2.  The rating above are at an ambient temperature of 450 degree C

Circuit Formula AC\DC Current Ratio (1) Ripple Percent(2) n (Approx)
        SINGLE PHASE
  Half Wave VL= 2.22 2.22E

Ve ( E+nVf)1.57121  Centre- tapVL= 2.22 2.22


Ve (E=2nVf)0.8048  BridgeVL= 1.11 1.11E


Ve ( E=4nvf)1.12548    THREE PHASE  Half WaveVL= 1.48  1.48E


Ve ( E+3nVf)0.6018.3  BridgeVL= 0.742  0.742E


Ve (E+6nVf)0.804.2

VL = on – load a.c. input voltage ( total secondary voltage for single phase center – tap line- to line for three phase half wave and bridge)

E = mean d.c. output voltage .

Vf = mean element forward voltage drop.

N = number of series elements .

Ve = Voltage of plate

(1) = a.c. input curre


d.c. output current

(2) = a.c. ripple voltage – r.m.s. x 100


mean d.c. output voltage

PlateType Mechstructure Fig.Ref. Width(W)mm Height(W)mm F.L(Cx2) +PXN Pitch(P)mm SpindleDia(D)       EProjections on  both sides mm
C
D
E
F
G
K
M
Q
R
Y
S
N
T
P
L
L
LA
L
L
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
LA
L
6
6
6
4
6
2
2
4
4
2
2
5
5
5
5
5
5
2
2
4
4
5
5
1
1
17
23
23
36
36
50
50
50
50
76
76
62
62
76
76
83
83
100
100
152
152
100
100
381
381
32
35
35
35
48
68
68
100
100
100
100
122
122
122
122
122
122
122
122
100
100
185
185
100
10
32+PxN
32+PxN
32+PxN
32+PxN
32+PxN
20+PxN
20+PxN
20+PxN
20+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
45+PxN
51+PxN
51+PxN
2.5
3. 35
5.8
5.8
7.1
7.0
8.5
7.0
8.5
9.9
12.2
12.2
17.3
9.9
12.2
9.9
12.2
12.2
17.3
12.2
17.3
12.2
17.3
9.9
12.2
3/16
3\16
3\16
3\16
3\16
1/4
1/4
1/4
1/4
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
10
10
10
10
10
15
15
15
15
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20

N = Number of plates in stack
F.L. = Fixing Length
C = End assembly length
P = Plate Distance

Rectifiers with 4 or less than 4 plates shall be screw / bolt mounted