Model of PTC heater

Types of Heaters:

Item
Symbol
Description
Name
MZ
PTC material
Type
FR
Fan Heater
Insulation
D
Surface electrified (radiator with electirc)
J
Surface insulated( 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,tubular,coil and fin-tube)
Size
2 digits
1/10 of size of radiator (keeps one decimals)
Code
non
First design (default)
/A
Modification version
Parameters of PTC heaters

Item
D series (glue/electrified)
J series
(glue/insulation)
JX series
(tube/insulation)
Rated Input
220V/110V
Rated Frequency
50Hz/60Hz
Length of Radiator
50mm~750mm
Rated Input power
100W~3000W
100W~4800W
Tolerance for Input power
+5% ~ -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
Response  time of thermostat when overheated
≤ 6min
Response 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  temperature, the ideal test is to fix it in a complete machine under standard ambient conditions. In practice, test is done with the samples  in a machine after adjustment of relavant parameters, with ambient temperature at 20~25℃.
2. In consideration of thermal expansion, there should be some gap(more than 5mm) around the PTC heaters
3. For heaters of surface-electrified type, it should be aware that safety distance 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 middle point should be connected with null line so that terminal voltage would not exceed due to imbalance of voltage.