Types of Heaters & Parameters
Types of Heaters
| Item |
Symbol |
Description |
|
Name |
MZ |
PTC material |
|
Type |
FR |
Fan Heater |
|
Insulation |
D |
Surface electrified (radiator with electirc) |
|
J |
Surface insulation( radiator without electirc) |
|
Input power |
2 digits |
1/100 of rated input (keeps one decimals) |
|
Structure |
non |
glue (default) |
|
X |
fixturing（including type of rectangle,tublar,coil and fin-tube） |
|
Size |
2 digits |
1/10 of size of radiator ( keeps one decimals) |
|
Code |
non |
First design (default) |
|
/A |
Modify design |
Examples（ PTC Heater with 1200W AL. tube,Length of tube 500mm ）：
Parameters of PTCHeaters
| Item |
D series (glue/electrified) |
J series
(glue/insulation) |
JX series
(fixturing/insulation) |
|
Rated Input |
220V/110V |
|
Rated Frequency |
50Hz/60Hz |
|
Length of Radiator（Range） |
50mm～750mm |
|
Rated Input power（Range） |
100W～3000W |
100W～2500W |
|
Tolerance for Input power |
+5％or -10％ |
|
Max Initial Current |
≤1.5*Work Current / ≤2.5*Work Current |
|
Insulation Resistance |
― |
≥10MΩ |
|
Electric Strength |
― |
1250V、1min |
|
Leaking Current |
― |
≤0.5mA |
|
Withstand Voltage |
450V、1min / 250V、1min |
|
Active time of thermalsat when overheated |
≤ 6min |
|
Active time of fuse when overheated |
≤15min |
|
Power decay rate（1000h） |
≤10％ |
Attention for use:
1. Since the power of PTC heater is greatly influenced by ambient, the ideal test measure is to fix it in a complete machine under standard ambient conditions.In practice, we are used to do the test after adjusting relative paramters of simulate air passage by confirmed sample in a complete machine,with ambient temperature at 20～25℃.
2.Considering of the thermal expansion,there should be some gap(above 5mm)around the PTC heaters
3.For heaters of surface-electrified type,it should be aware that saftey spacing is necessary to keep away from body,metals and frost. Comparatively,the surface-insulation type is more reliable in safety.
4.When heaters connected to three-phase supply,the neutral point should be connected with null line so that terminal voltage would not overtop due to imbalance.
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