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Help Center10kv 12kv 24kv 33kv to 550kv External or Built in Type Epoxy Resin Bushing Current Transformer for Power Transformer and Circuit Breaker With Stainless Cover Bushing Type Current Transformer Bushing Current Transformer CT for Switchgear Generator GIS
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0.5-35kV Epoxy/Epoxide resin current transformer
0.5-35kV Epoxy resin through-wall type current transformer
15-24kV bushing current transformer
LRZ(G)(B)(T)(1,2,3,4)-20(A,A1,A2,A/2,B,B1,B2,C,φ200,φ240)bushing current transformer
Model description
LRZ(G)(B)(T)(1,2,3,4)-20(A,A1,A2,A/2,B,B1,B2,C,φ200,φ240)
L: Current transformer
R:Bushing type
Z: Casting insulation
G: Paint-immerged insulation
B: With protective class
T: Transient protection
(1,2,3,4): Design no.
20: Rated voltage(kV)
(A,A1,A2,A/2,B,B1,B2,C,φ200,φ240): Structure code
LRG1-20A
LRG1-20B1
LRG1-20C
LRGB1-20A
LRGB1-20B1
LRGB1-20C
LRG1-20B2
LRGB1-20B2
LRGBT1-20A
LRGBT1-20B1
LRGBT1-20B2
LRGBT1-20C TPY Z2n=50VA, (COSφ=1.0), C-100ms-O, Tp=265ms, Kssc=2.5
LRZ1-20A
LRZB1-20A
LRZ1-20B
LRZB1-20B
LRZ1-20C
LRZB1-20C
LRZ4-20/φ200
LRZB4-20/φ200
LRZ4-20/φ240
LRZB4-20/φ240
LRGBT2-20A TPY Z1n=50VA, (COSφ=1.0), C-100ms-O, Tp=265ms, Kssc=2.5
LRG2-20A2
LRGB2-20A2
LRG2-20A/2
LRGB2-20A/2
LRZ(B)2-20A1-L(T)
LRZ(B)2-20B1-L(T)
LRZ2-20A2-L(T)
LRZB2-20A2-L(T)
LRZB2-20B2-L(T)
LRG3-20A
LRGB3-20A
LRGBT3-20A TPY Z2n=50VA, (COSφ=1.0), C-100ms-O, Tp=265ms, Kssc=5
LRG3-20B
LRGB3-20B
LRGBT3-20B TPY Z2n=50VA, (COSφ=1.0), C-100ms-O, Tp=265ms, Kssc=2.3
LRG3-20C
LRGB3-20C
LRGBT3-20C TPY Z2n=50VA, (COSφ=1.0), C-100ms-O, Tp=350ms, Kssc=4
Note: The voltage rate is the voltage of generator outlet bushing, the current transformer voltage rate is 0.5kV.
LRB-126(145)/330(320) bushing current transformer
Type description
LRB-126(145)/330(320)
L: Current transformer
R: Bushing type
B: With protective class
126(145): Rated voltage(kV)
330(320): Product height
LRB-126/330
LRB-145/320
300-600/5 0.2S/0.5S/5P20/5P20
600-1200/5 0.5S/5P40/5P40
600-1200/5 0.2S/0.5S/5P20/5P20/5P20
800-1600/5 0.2S/0.5/5P30/5P30
Note: Customized products according to customer’s parameters are available.
Rated primary current I1n(A) |
Thermal current/second (kA effective value) Ith/1s (kA r.m.s) |
Dynamic stable current (kA peak) Idyn |
Accuracy class combination 1S/2S/3S/4S |
Rated secondary output(VA) |
Surface creepage distance(mm) |
Double transformation ratio |
Single transformation ratio |
Thermal current/4 seconds (kA effective value) Ith/4s (kA r.m.s) |
two transformation ratio |
three transformation ratio |
Short time thermal current (kA effective value) Ith (kA r.m.s) |
|
Accuracy limit factor ALF 15, 20,25,30 |
Porcelain bushing creepage distance(mm) |
Rated current ratio(A) |
Rated resistance burden Rb(Ω) 7.5,10,15,20 |
Rated symmetrical short-circuit current factor K 10,15,20 |
Primary time constant Tp 40,60,80,100 |
|
Duty cycle C-0.1s-O C-0.1(0.04)s-O C-0.1s-O-0.5s-C-0.1(0.04)s-O |
Rated ampere-turn |
Primary turn through core |
Power factor COSφ=0.8(lag) |
Through primary busbar |
Rated insulation level(kV) |
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