330100-90-01 前置器系统 变压器分接开关接触不良导致温升过高

330100-90-01  前置器系统 

变压器分接开关接触不良导致温升过高。330100-90-01  前置器系统 一般来说，在变压器运行过程中，由于分接开关接触不良，接触电阻过大，会导致局部放电过热，导致变压器温度过高。这种情况可以通过直流电桥测量变压器高压绕组电阻的直流电阻来判断。分接开关接触不良的处理方法是将变压器吊芯，对变压器分接开关进行检修。

变压器运行过程中的绝缘损坏导致温升过高。一般来说，变压器铁芯硅钢片之间的绝缘损坏会导致变压器温度过高，这可以通过气体是否频繁移动来判断。通过检查变压器铁芯，如果铁芯穿芯螺栓绝缘套管绝缘损坏，会导致变压器温升过高。

变压器运行中的损失主要来自铁芯的磁滞、涡流损失和绕组电阻损失。一方面，这些损失产生的热量通过变压器散热管和外壳的传导传递到周围环境，另一方面，它提高了变压器的温度，但一段时间后，330100-90-01  前置器系统 变压器也会达到稳定的温升。如果变压器的温升长期过高，或者温升速度快，或者与同一产品相比，温升明显过高，即温升过高故障。变压器的使用温升过高对变压器本身危害很大，对变压器的使用寿命也有影响。因此，一旦发现异常，应及时检查处理，避免设备损坏。



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330100-90-01  前置器系统 

The 4-channel relay module is a full height module that provides four relay outputs. Any number of 4-channel relay modules can be placed in any slot on the right for transient data interface modules. Each output channel relay module of 4- can be independently programmed to execute voting logic. Each relay used on the 4-channel relay module includes alarm drive logic. The programming of alarm driven logic uses AND and OR logic, and groups can use alarm inputs (alarm and danger states), abnormal, or combinations from any monitoring channel or any monitor channel in the rack. You can program the alarm driver to meet your application needs using the 3500 rack configuration software
Ordering 3500 monitors with the Hazard Certification option (01&-2) has passed the Zone 2/Zone 2 certification standards (including ATEX/IECEx and North American division). The standards for Zone 2/Zone 2 stipulate that increasing the required voltage at higher positions and 3500/32M relays do not meet these spacing requirements. For this reason, The 3500/32M relay hazardous area certification option ordered together (including the country specific hazardous area certification option that has historically been restricted to a voltage lower than the ordered voltage through non hazardous certification options). Using a higher voltage will violate the hazardous area certification option associated with the certificate. If the 3500/32M is functionally safe (the SIL system functional safety certificate requires voltage limitation), higher voltage functional safety (SIL) systems are not allowed. It is possible to connect field wiring to 3500/32M relays so that conductors are exposed to potential human contact. This may result in a dangerous voltage of electric shock at high temperatures. Customers can only use 3500/32M relays specified under voltage. Appropriate safety measures must be taken regarding the risk of electric shock.

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