The SPH series industrial ovens from ESPEC are suited for heat-stress testing of batteries, as required by IEC, UL, and SAE standards. These ovens include safety features in the event of catastrophic battery failure.
SAE J2464 - Thermal stability: Increasing temperature in 5°C increments
Note that heat-up rate required for some tests is dependent on the capabilities of the oven and the mass-load of batteries being tested
Safety features for potential explosive conditions include:
Low temperature heaters
High-mass "sheathed" heaters are used to heat the oven without a glowing-hot element that could ignite any flammable gases released from a failing battery.
Safety explosion vent
A blow-out panel in the ceiling allows ventilation if an explosion occurs. The door latch locks securely to avoid popping open, if such an event occurred. Even if the operator accidentally turns on the power when door is unlocked, the door lock detection switch prevents the oven from starting.
In case an explosion occurs inside the test chamber, as shown in this figure, insulation material is bent and blown upward together with the aluminum plate to the metal screen at the top of the chamber. In this way the explosion is safely channeled and released through the top metal screen. For our '402' size, the explosion is released through the top metal screen by bending insulation material on the rear wall.
Safety Oven Features
Explosion vent and safety door for security
Single action lever door with lock detection to prevent operation with the door open
Stainless steel interior
Exclusive ESPEC controller with large LED display
Two-step programmability with functions for automatic start, stop, ramp, and repeat
Visual and audible alarm with diagnostic fault code
Two-step programmability with functions for automatic start, stop, ramp, and repeat
Four-tiered safety system for overheat conditions
Two shelves included standard, rated for 40 lbs. or more
Exhaust damper for ventilating oven and fast cool-down
Flammables or materials containing them can be subjected to drying (heat treatment) with this chamber. However, to avoid explosion, ventilate the chamber well and use the chamber below the explosive limit. See the brochure and/or manual for further information including proper operation and acceptable inflammables & combustible gases.