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Insulators >> APEX - Braced Post Insulators
B291-XT Series
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List of Materials:

1) 2.5" Line Post Insulator (1 each)
2) 25 klb MX Suspension Insulator (1 each)
3) SYC-56 Socket Y-Clevis (1 each)
4) Turnbuckle

Identification

A = 1.5" [38 mm] (not included; pole connection offset)
B = Brace Length
C = Brace Length
H = Assembly Height
TB = Turnbuckle
SSL = Suspension Length
PSL = Post Section Length

Fig.

PSL

SSL

H

C

B

MIN

MAX

MIN

MAX

in (mm)

in (mm)

in (mm)

in (mm)

Deg.

in (mm)

in (mm)

1

34.8
(884)

35.4
(899)

51.0
(1295)

58.0
(1473)

65-69

53.8
(1367)

59.8
(1519)

2

34.8
(884)

35.4
(899)

55.0
(1397)

65.0
(1651)

67-62

56.9
(1445)

65.9
(1674)

3

40.7
(1034

41.7
(1059)

55.5
(1410)

62.5
(1588)

62-66

60.1
(1527)

66.0
(1676)

4

40.7
(1034)

41.7
(1059)

59.5
(1511)

70.0
(1778)

65-70

63.2
(1605)

72.0
(1834)

5

48.0
(1219)

46.4
(1179)

57.0
(1448)

64.5
(1638)

57-62

64.8
(1646)

70.8
(1798)

6

48.0
(1219)

46.4
(1179)

61.0
(1549)

72.0
(1829)

60-65

67.9
(1725)

76.9
(1953)

7

52.6
(1336)

54.3
(1379)

64.5
(1638)

72.0
(1829)

58-62

72.7
(1847)

78.7
(1999)

8

52.6
(1336)

54.3
(1379)

68.5
(1740)

79.5
(2019)

60-65

75.8
(1925)

84.8
(2154)

9

61.5
(1562)

603
(1532)

66.0
(1676)

74.0
(1880)

53-57

78.7
(1999)

84.7
(2151)

10

61.5
(1562)

60.3
(1532)

70.5
(1791)

82.5
(2096)

56-61

81.8
(2078)

90.8
(2306)

11

66.0
(1676)

65.3
(1659)

69.0
(1753)

77.0
(1956)

52-56

83.7
(2123)

89.7
(2278)

12

66.0
(1676)

65.3
(1659)

73.5
(1867)

86.0
(2184)

55-60

86.8
(2205)

95.8
(2433)

English Metric

 

B291-XT Series
Catalog Number Fig. Line Voltage (kV) MDCL (lbs) Dry Arc (in) Leakage (in) Dry Electrical Flashover (kV) 60 Hz Wet Electrical Flashover (kV) 60 Hz CIFO+ (kV) CIFO- (kV) Weight (lbs)
B291035XT4M6 1 69 11528 25.6 60.8 255 233 433 527 72.0
B291035XT4M9 2 69 11528 25.6 60.8 255 233 433 527 72.0
B291041XT4M6 3 69 11265 31.3 76.8 307 282 524 628 77.0
B291041XT4M9 4 69 11265 31.3 76.8 307 282 624 628 77.0
B291048XT4M6 5 115 10740 38.3 89.0 370 342 635 720 80.0
B291048XT4M9 6 115 10740 38.3 89.0 370 342 635 720 80.0
B291053XT4M6 7 155/138 11320 43.5 109.2 415 385 717 789 88.0
B291053XT4M9 8 155/138 11320 43.5 109.2 415 385 717 789 88.0
B291062XT4M6 9 138 10301 51.9 125.2 489 452 849 897 96.0
B291062XT4M9 10 138 10301 51.9 125.2 489 452 849 897 96.0
B291066XT4M6 11 138/161 10130 56.4 137.4 529 488 921 965 94.0
B291066XT4M9 12 138/161 10130 56.4 137.4 826 488 921 965 94.0
Notes:
1) MDCL = Max. Design Cantilever Load (Load Curves provided upon request)
2) Electrical Data is derived from the assembly "Strike Distance," without corona rings fro 161 kV and below.  All 230 kV Braced Post assemblies supplied with a corona ring (Electrical Values include the corona ring)
3) HS = High Strength design.  Brace SML = 36k
4) For Higher Strength or Custom Designs, please complete the Braced Post Request Worksheet at the end of this section and return the completed worksheet to MPS through your local MPS Sales Representative.
5) B191 Series supplied with standard GR-0 Bendable Gain Base on line post
6) For Flat Base F2-0, change the "9" in B191...to "1" = B111...[See line post base section for details]
7) Customized Designs include any dimensional changes, strength changes, hardware changes, end fitting changes, gain to flat base changes, etc.
 


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