shanghai liangxin electrical co., ltd. (nader) solemn statement on malicious slander and spreading of false and misleading information
release time： 2017-03-28 publisher： nader良信电器
the company has been receiving feedback on the false information about the flame resistance of the miniature circuit breakers produced by our company spread by ill-intentioned competitors, which, so far, has caused extremely adverse impacts on the brand image of our company. we hereby make a solemn statement that the miniature circuit breakers produced by nader are in full compliance with the national flammability standard for such products and rohs requirements, and have passed ccc\ce\tuv verification and validation. nader is also one of the "green" electrical products manufacturers in the domestic low-voltage electrical equipment industry. we welcome and accept supervision from end users.
all the malicious spreading of the information on nader‘s miniature circuit breakers of not being inflaming retarding is suspected of defaming that is subject to legal actions. such malicious spreading and dissemination of false information and videos against our products is vicious competition. we hereby solemnly request the perpetrator to stop spreading such false information. otherwise, we will reserve the right to take any legal actions.
we hereby provide the technical interpretation of fire retardancy test:
1. it is unscientific and unreasonable to directly igniting the guide rail snap spring of nader's miniature circuit breakers with lighter to evaluate the excess heat resistance and flame resistance of the product, and it does not meet the standard test requirements.
2. the national standard gb10963.1-2005 "electrical accessories: overcurrent protection circuit breaker for household and similar use ,part i: ac circuit breaker" has clearly set forth the technical requirements for excess heat resistance and flame resistance in chapter 8.11, with the following provisions:
8.11 excess heat resistance and flame resistance
if the adjacent current-carrying parts reach a very high temperature in the event of a fault or overload, the external parts made of insulation materials of the circuit breaker should not burn readily and spread the flame.
check whether the product is qualified through visual inspection and test specified in chapter 9.15.
carry out test in accordance with excess heat resistance and flame resistance (glow-wire test) set forth in chapter 9.15 to determine the conformity. the provisions are as follows:
9.15 excess heat resistance and flame resistance (glow-wire test)
carry out glow-wire test according to chapter 4 to chapter 10 in gb/t 5169.10-1997 under the following conditions:
- conduct tests of the insulated external parts that are necessary to keep the current-carrying parts and protective circuit components of a circuit breaker in position at the temperature of (960±15) °c;
- conduct tests of all other insulated external parts at a temperature of (650±10) °c.
note 1: the glow-wire test is to ensure that the electrically heated test wire does not cause ignition of the insulated parts under specified conditions or to ensure that the insulation materials which may be ignited by the heating test wire under specified conditions would burn for a limited period of time without causing a fire spreading by the flame or burning parts or particles falling from the test parts.
note 2: for the purposes of this test, consider the base of the surface mounted circuit breaker as an external part.
note 3: the ceramic parts will not be tested.
