Current limiting backup fuse

GRL GRUOP > Fuse > High Voltage Fuse > Current limiting backup fuse > ZGR3(XRNT5)-15.5 H.V Current-limiting back-up fuse for short-circuit protection of oil-immersed transformer

ZGR3(XRNT5)-15.5 H.V Current-limiting back-up fuse for short-circuit protection of oil-immersed transformer

Mode:ZGR3(XRNT5)-15.5

Voltage:17.2Kv

Current:125A、175A

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Keyword:oil-immersed transformer

Description

ZGR3(XRNT5)-15.5 H.V Current-limiting back-up fuse for short-circuit protection of oil-immersed transformer

General

ZGR3 ( XRNT5 ) -15.5H.V.current-limiting back-up fuse for short-circuit protection of oil-immersed transformer ( here-under fuse ) is available for H. V. indoor electric system , with rated voltage 15.5KV , rated current up to 175A ,50HZ a.c..It is used for protecting from short-circuit for power transformer .It can offer protection of all-round together in series with ZGR4 ( PRNT13 ) -15.5H.V. fuse for overload protection of oil-immersed transformer .

Standard

Accord with GB15166.2 Alternating-current high-voltage fuses Current-limiting fuse

Basic parameters

Rated voltage Kv	Rated current of fuse A	Rated current of fuse A	Overall Dimension	Rated short circuit breaking current A
17.2	125	31.5、40、50、63 80、100、125	chat1	50
17.2	175	150、175	chat2	50

Working conditions: The fuse element is normally used in transformer oil, and the upper temperature limit of the surrounding oil does not exceed 100 ℃

Order number

Rated Current	Order Number
31.5	ZGR3-31.5
40	ZGR3-40
50	ZGR3-50
63	ZGR3-63
80	ZGR3-80
100	ZGR3-100
125	ZGR3-125
150	ZGR3-150
175	ZGR3-175

Type instruction

Performance

Fuse can’t be used alone . It must be used in series with the back-up fuse to become protection of all-around.In using,the characteristic of the fuse and the back-up fuse must be considered enough .

Figure the time-current characteristic of the fuse and the back-up fuse . A in figure is a point of the meeting two curves . B is min.breaking capacity current of the back-up fuse-link . C is rated max. breaking capacity current of the fuse .

When fuse will be used in series with the back-up fuse-link , first the point A must be existence , second the point B is above the point A and the point C is below the point A.