GE PANDA, Service Manual

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Chapter 1: Functional Description
System Functions
Service Manual 1-25
1.3.17 Equipment Grounding
1.3.17.1 Grounding and Insulation Design for Safety
The grounding and insulation design of the Giraffe and Panda Warmers ensures all mains circuitry is
separated from the operator and patient by one of two methods:
• Basic insulation with a grounded metal barrier
• Double/reinforced insulation
The radiant heater reflecting dish, heater duct, electrical enclosure, and elevating base all rely upon basic
insulation of the wires and a grounded metal barrier.
The heater head housing and main bracket (on elevating base models) rely on double/reinforced insulation.
For the heater head housing, the two parts of the housing along with the wire insulation form a double
insulation system. For the main bracket, a sheet of insulating material is fitted between the bracket and the
elevating column. This insulation, along with the insulation on the wires of the elevating base form a double
insulation system.
1.3.17.2 Grounding and Insulation Design for Electromagnetic Compatibility
The device incorporates grounding for ESD/EMC compliance. The dovetail rails and legs of the device are
grounded to comply to ESD susceptibility standards.
1.3.17.3 Ground and Insulation Design for Convenience
The device incorporates IEC appliance outlets for attachment of approved accessories that include a third
wire ground. The device also incorporates a ground equalization potential post, which allows for the
interconnection of equipment grounds if required.