SA8.19 Risk of electric shock – relamping

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SA8.19.1 As specified in Clause SA6.13.2, devices substituting for linear fluorescent lamps shall beevaluated for a possible risk of electric shock while installing, removing, or replacing the LED lamp device.
根据第SA6.13.2条的规定，替代线性荧光灯的设备，在安装、拆卸或更换LED灯设备时，应评估可能存在的触电风险。

SA8.19.2 One end (lamp base) of the device under test shall be connected to its intended source of supply while the other end (lamp base) of the device shall be considered accessible and shall be connected to the shock hazard measurement meter circuit and in turn to earth ground as shown in Figure SA8.1. The current shall not exceed 5 M.I.U (7.07 peak M.I.U.).
一端(灯座)应连接到电源测试设备，而另一端(灯座)应当考虑可接触的连接到连接到冲击危险测量仪表电路并依次接地，如图SA8.1所示。电流不应超过5 M.I.U(7.07峰值M.I.U)。

SA8.19.3 The construction of the shock hazard measurement meter circuit, meter, and the explanation of M.I.U. measurement unit are described in UL 935.

SA8.19.4 During the measurement, any mechanical interlock mechanism intended to prevent current from flowing through the lamp during its insertion or removal shall be defeated. However, an interlock mechanism located on the free end of the lamp under test is allowed to operate normally if it meets all thefollowing criteria:
在测量过程中，任何机械联锁机构的意图在灯具插入或拔出时，应防止电流流过灯具。但是，如果满足以下所有标准，则允许位于被测灯自由端上的联锁机构正常工作:

a) Actuators shall be located only on the face of the lamp bases and have a normally-open,momentary-type action so that they automatically engage and disengage when the lamp isinserted or removed from the luminaire, respectively;
执行机构应仅位于灯座的表面，具有常开的、瞬态的动作，以便当灯从灯具上插入或移开时，执行机构分别自动接合和脱离。  

b) Actuators shall require a force of no more than 4.45 N (1 lbf) to recess completely into the lamp base so that they are flush with the lamp base surface;
执行机构应要求不超过4.45 N的力，完全凹入灯座内，使其与灯座表面平齐。

c) The actuator shall be made from or externally encapsulated by an insulating material thatcomplies with the requirements for at least basic insulation;

d) The actuator shall be shaped and located to reduce the likelihood of accidental engagementby an end user during lamp insertion into or removal from an energized luminaire. The actuatoris considered to comply with this requirement if it cannot be engaged by a 50.8 mm (2 inch)diameter rigid sphere regardless of how it contacts the lamp, see Figure SA8.2; and

e) The interlock mechanism shall endure 500 actuation cycles under its intended electrical loadwithout resulting in mechanical or electrical damage to the lamp or mechanism.