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KR SERIES NON-FLAMMABLE |
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KR SERIES NON-FLAMMABLE
WIRE WOUND FIXED RESISTORS
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GENERAL SPECIFICATIONS
|
Model |
Power Rating [W] |
Resistance |
Weight |
|
|
KR KRIB KRG KRZG |
80 |
120 |
0.02-4 |
140 |
|
100 |
150 |
0.03-5 |
170 |
|
|
120 |
180 |
0.03-6 |
200 |
|
|
150 |
225 |
0.04-8 |
250 |
|
|
200 |
300 |
0.05-10 |
306 |
|
|
300 |
450 |
0.08-15 |
650 |
|
|
400 |
600 |
0.10-20 |
800 |
|
CHARACTERISTICS Values in [ ] mean change in ohmic value after test
|
Temp. Coefficient |
+-400ppm/C max. |
|
Power Rating Load |
[Change in R/R ¡Â+-1%] 375C max. |
|
Short Time Overload |
[Change in R/R ¡Â+-2%] 300% rated power 5 sec. |
|
Insulation Resistance |
100Mohm min. DC 500V |
|
Dielectric Withstanding V. |
KR, KRZ: AC 2000V 1 min., KRZG: AC 3000V 1 min. |
|
Terminal Strength |
10mm: 20KgF 30sec., 16mm: 20KgF 30sec. |
|
Resistor Strength |
30FgF 30sec. |
|
Vibration |
Mount: KRG type, 1.5mm 10-55Hz/1min.X,Y,Z 2 hours. |
|
Heat Resistance |
375C 2 hrs. |
|
Thermal Shock |
[Change in R/R ¡Â+-2%] Power rating load-30min. –55C-15min. |
|
Humidity (Steady state) |
[Change in R/R ¡Â+-2%,10 M ohm min.] 40C, 95%RH, 500 hrs. |
|
Load Life in Humidity |
[Change in R/R ¡Â+-2%] 10% Rated P, 90m. ON, 30min OFF, 40C, 95%RH, 500hrs. |
|
Load Life |
[Change in R/R ¡Â+-5%] Power rating, 90 min. ON, 30min OFF, 500hrs. |
|
Flame Retardancy |
100-600% rated power load |
SHORT TIME OVER LOAD RATING
|
An overload exceeding the normal current is allowed for a short duration of 30 minutes or less |
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|
Load time(sec) |
5 |
10 |
30 |
60 |
180 |
300 |
600 |
900 |
1800 |
|
Max Rated Load(%) |
400% |
350% |
250% |
200% |
140% |
120% |
110% |
105% |
100% |
NEMA ON-OFF CYCLING
|
Cycling |
5sec. ON |
10sec. ON |
15sec. ON |
15sec. ON |
15sec. ON |
15sec. ON |
|
Max Amps Rated Load |
290% |
245% |
185% |
160% |
150% |
125% |
CURRENT REDUCTION RATE (%) FOR GROUPED APPLICATIONS
|
EA |
2 |
3 |
4 |
6 |
9 |
12 |
16 |
|
% |
84 |
80 |
78 |
76 |
75 |
73 |
71 |
DIMENSIONS
|
Model |
Shape |
Dimensions [mm] |
|||||||||||||||
|
A |
C |
D |
E |
F |
G |
H |
J |
K |
(l) |
l |
M |
P |
Q |
R |
T |
||
|
KR KRIB KRG KRZG |
80 |
8 |
4 |
28 |
14 |
26 |
26 |
30 |
6 |
33 |
115 |
150 |
173 |
35 |
140 |
161 |
1.4 |
|
100 |
8 |
4 |
28 |
14 |
26 |
26 |
30 |
6 |
33 |
140 |
175 |
198 |
35 |
168 |
189 |
1.4 |
|
|
120 |
8 |
4 |
28 |
14 |
26 |
26 |
30 |
6 |
33 |
165 |
200 |
221 |
35 |
190 |
212 |
1.4 |
|
|
150 |
8 |
4 |
28 |
14 |
26 |
26 |
30 |
6 |
33 |
195 |
230 |
253 |
35 |
220 |
242 |
1.4 |
|
|
200 |
8 |
4 |
28 |
14 |
26 |
26 |
30 |
6 |
33 |
254 |
290 |
313 |
35 |
280 |
300 |
1.4 |
|
|
300 |
12 |
5.5 |
42 |
24 |
40 |
40 |
40 |
6.5 |
45 |
254 |
300 |
330 |
52 |
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