{"id":1802,"date":"2026-08-12T16:00:00","date_gmt":"2026-08-12T08:00:00","guid":{"rendered":"https:\/\/shenhengglobal.com\/?p=1802"},"modified":"2026-08-27T09:55:38","modified_gmt":"2026-08-27T01:55:38","slug":"4160v-switchgear-rfq-inputs","status":"publish","type":"post","link":"https:\/\/shenhengglobal.com\/ja\/blog\/4160v-switchgear-rfq-inputs\/","title":{"rendered":"4160V\u914d\u96fb\u76e4\uff1a\u7523\u696d\u7528\u914d\u96fb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5411\u3051RFQ\u5165\u529b\u4e8b\u9805"},"content":{"rendered":"
\n
\"Shenheng<\/figure>\n

A 4.16 kV (4160 V) system should be described as a nominal system voltage, not as a complete equipment specification. In many markets suppliers will propose 5 kV-class medium-voltage switchgear, but the insulation, interrupting and withstand ratings must be confirmed against the project study and applicable standard.<\/p>\n

Start with the system basis<\/h2>\n

Put these fields at the top of the RFQ so every bidder prices the same network:<\/p>\n\n\n\n\n\n\n\n\n\n
\u5165\u529b<\/th>\nWhat to state<\/th>\nWhy it changes the proposal<\/th>\n<\/tr>\n<\/thead>\n
Nominal voltage<\/td>\n4.16 kV line-to-line; highest system voltage if known<\/td>\nDetermines equipment class and insulation coordination<\/td>\n<\/tr>\n
\u5468\u6ce2\u6570\u3068\u4f4d\u76f8<\/td>\n50\/60 Hz, three phase, grounding method<\/td>\nAffects transformer, CT\/VT and relay interfaces<\/td>\n<\/tr>\n
Fault study basis<\/td>\nAvailable three-phase and line-ground fault current, X\/R and clearing time<\/td>\nSets interrupting and short-time withstand duty<\/td>\n<\/tr>\n
Load and source<\/td>\nMotor starts, generators, utility incomer, transformer data<\/td>\nDefines feeder sizes and transient duty<\/td>\n<\/tr>\n
Operating scheme<\/td>\nMain-tie-main, bus split, transfer and maintenance states<\/td>\nChanges simultaneous fault contribution<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Do not fill missing kA or BIL values with a catalog default. Mark them \u201cto be confirmed by the study\u201d and ask the supplier to state the assumed basis.<\/p>\n

\"Ring<\/figure>\n

Define lineup architecture<\/h2>\n

Describe the lineup one-line, not only the word \u201cswitchgear.\u201d Identify incoming, tie, feeder, metering and spare sections; bus arrangement; accessibility; cable entry; shutters\/interlocks; and whether the construction is metal-clad, metal-enclosed, air-insulated or gas-insulated. These choices affect footprint, maintenance method and interfaces. \u201cArc-resistant\u201d should appear only when the project requires a defined test classification and the supplier provides applicable evidence.<\/p>\n

Specify ratings and protection inputs<\/h2>\n

Request a completed schedule for:<\/p>\n