变压器不是自我保护设备，因此需要防止外部故障。
适用标准（法定和监管）建议的必要保护系统
各公用设施/当局的要求）应在适当的运行条件下提供。近的
有关更多详细信息，也可参考IEEE标准C37.91版本。
安装和调试测试结果应与SE-TBI共享，并获得调试同意
应在充电前获得。（参考附录A、B、C、D和E）
应监控OLTC的运行次数，并应
按照OEM维修手册中的建议和本手册中的说明进行。（参考条款
OLTC计数器参考图（iii），TPI计数器参考图（iv）。
11、保护装置不工作/不健康导致变压器故障
如果发生故障，则产品保修无效。
TBI AF/IMS001/R3变压器安装、调试、运行和维护
9 | P a g e
12、因使用条件不当导致的变压器故障，如缺乏常规/预防措施
维护、过载、过压等将使产品保修失效。
安装必须由主管机构完成/由SE-TBI认证或由SE-TBI监督。
应按照适用的监管要求保持安全的外部电气间隙
如OGA所述。
15、充电前，确保从所有放气塞中排出全部空气。参考图（五）、（六）和（七）
11页。

Transformer is not self-protective equipment, hence, needs to be protected from external faults. Necessary protective systems as recommended by applicable standard (statutory & regulatory requirements of respective utilities/authority) shall be provided in duly operational condition. Latest version of IEEE Std. C37.91 may also be referred for further details. 9. Erection & commissioning test results shall be shared with SE-TBI & consent for commissioning shall be obtained before charging. (Refer Appendix A,B,C,D & E) 10. Number of operation of OLTC shall be monitored & oil filtration/ servicing/ overhauling shall be done as per recommendation in OEM service manual & as mentioned in this manual. (Refer Clause 2.1.12 in Section-2) and refer Fig (iii) for OLTC Counter and Fig (iv) for TPI counter. 11. Failure of transformer caused due to non-functioning/ improper-healthiness of protective device in case of occurrence of fault shall void the warranty of the product. TBI AF/IMS001/R3 Installation, Commissioning, Operation & Maintenance of Transformer 9 | P a g e 12. Failure of transformer caused due to improper service conditions e.g. lack of routine/ preventive maintenance, overloading, overvoltage etc shall void the warranty of product. 13. Erection must be done by competent agency/ certified by SE-TBI or in supervision of SE-TBI. 14. Safe external electrical clearances shall be maintained as per applicable regulatory requirements and as mentioned in OGA. 15. Ensure complete air is vented from all air release plugs before charging. Refer Fig (v),(vi) and (vii) on Page-11.