Finned sheathed hairpin heater elements

ELECTRICAL SPECIFICATION:

1. WORKING VOLTAGE: 230Vac
2. MUST COMPLY WITH BS7671 & LVD73/23/EEC
3. FLASH TEST WITHSTAND 1500V FOR 2 SECONDS.
4. INSULATION RESISTANCE > 1G OHM
5. LEAKAGE CURRENT (AT 230 Vac) < 0.1mA
6. ELEMENT POWER TOLERANCE: ± 7.5%

PERFORMANCE SPECIFICATION:

1. SURFACE TEMPERATURE MUST NOT EXCEED 400°C IN 0.75M/S AIRFLOW.
2. SHELF LIFE (AT NOMINAL AMBIENT TEMP & RH) > 3 MONTHS
3. MAXIMUM EXPANSION IN DIRECTION OF PEG AT WORKING TEMP. = 13mm

CONSTRUCTION SPECIFICATION:

1. ALL TOLERANCES ±1% UNLESS STATED OTHERWISE.
2. SHEATH MATERIAL: NOMINAL 8MM DIA STAINLESS STEEL (GRADE 304)
3. PEG MATERIAL: NOMINAL 6.35MM DIA STAINLESS STEEL TUBE
4. FINISH: STAINLESS STEEL FIN.
5. ELEMENT MATERIAL: KANTHAL D OR EQUIVALENT
6. INSULATION: MAGNESIUM OXIDE POWDER.
7. TERMINATIONS: 4BA THREADED PIN WITH CUP WASHERS, ANTI-VIBRATION WASHERS AND LOCK NUTS.
8. FIXINGS:1/4″ BSP THREADED FERRULES.