Fuse bases

Fuse Bases used to mount fuse and connect to the secured perimeter in pole transformer stations to 400 kVA.

Construction

podstawy bezpiecznikowe

Fuse bases are composed of the base main frame, MV bushing insulators and a fuse link.
PBNV-24, PBNV-30 overhead bases are designed for fixing WBGNp-17,5 and 24, OWBG-36 fuse links up to 25 A, as well as for connection with secured circuit in overhead switchgears, in particular in pole transformer substations up to 400 kVA.

PBNW-24 overhead fuse bases are designed for installation of pipe type fuses HH 24/....A, VVC/HH 24/....A up to 63 A, and to connect with a secured circuit in overhead switchgears, in particular in pole transformer substations with a transformer more than 400 kVA.

Technical parameters of the fuse bases

Compliance with standards:

Fuse bases comply with the latest PN-EN standards and have a certificate of conformity from the accredited body: the Institute of Electrical Engineering in Warsaw.

Technical parameters of the fuse bases
Rated voltage Ur 24 kV 36 kV
Isolation lightning impulse test voltage
      - underground and inter-pole 125 kV 170 kV
      - inter-terminal 145 kV 195 kV
Rated isolation altering test voltage
      - underground and inter-pole 50 kV 70 kV
      - inter-terminal 60 kV 80 kV
Rated frequency 50 Hz
Rated continuous current of the base 250A (depending on the value of the used link)
Rated continuous currents of the fuse links PBNV-24 (from 2 to 25A)
PBNW-24 (from 0,5 to 63A)
Rated interrupting current 6,3 kA
Link type Up to PBNV-24 WBGNp-17,5 and 24, OWBG-36,
Up to PBNW-24 HH 24.....A; VVC/HH 24.....A
Bushing insulator type CH-4-125 ,ISWN CH4-170

Designation


PBNV

podstawy schem 01
  1. Bushing insulator
  2. Fuse link WBGN
  3. Current terminal
  4. Earthing terminal
  5. Assembly element of the base
  6. Main contacts of the base


PBNVo-24/D w I

podstawy schem 02
  1. Bushing insulator
  2. Fuse link WBGN
  3. Current terminal
  4. Earthing terminal
  5. Assembly element of the base
  6. Main contacts of the base
  7. Lightning arrester


PBNW-24

podstawy schem 03
  1. Bushing insulator
  2. Fuse link HH
  3. Current terminal
  4. Earthing terminal
  5. Assembly element of the base
  6. Main contacts of the base

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