LW36-72.5T3150-40
Product Details
LW36-72.5T3150-40
High-volt ac Sf6 dead tank circuit breaker
□ Meaning of type
□Introduction
□LW36-72.5T high-voltage AC SF6 tank circuit breakers and current transformer circuit breaker will be together,and interrupters mounted horizontally in the grounded aluminum alloy housing,equipped with a CT26 spring operating mechanism,which The parts used are few,the layout is simple and compact,the whole is solid and durable,the switch is oil-free,the mechanical characteristics are excellent and the reliability is high.All the important parts adopt the CNC machining and machining center equipment processing. The bearings adopt imported international brand bearings,INA,SKF and other brands),mechanical life up to 10,000 times.It can be used for control and protection of 72.5(126)kV power transmission and distribution system.It can also be used in contact open circuit and opening and closing capacitor banks.
□ Characteristic of structure
□High throughflow capability(3150A);short circuit breaking current when 40℃:31.5kA.
□Long life electrical life:31.5KA×24times(25kA×31times); mechanical life:10000times with simple adjustment.
□High reliability it shares the arc extinguish chamber with LW36-126 type,and the inner insulation allowance is great,spring mechanism, so the structure is simple and also can be operated frequently.
□Breaking performance is reliable.
□Sealabitity is reliable.The annual leakage rate of SF6<0.5%.
□Suitable for foul environment(suitable for the area thatfilth level is IV and the temperature is betweth-40℃ to 40℃).
口Technical data
1)Main technical data of breaker
|
No. |
N a m e |
Unit |
Value |
||
|
1 |
Rated voltage |
|
72.5 |
||
|
2 |
Rated power frequency withstand voltage(1min) |
Toearth |
kV |
K ·160 |
|
|
|
|
Between interrupter |
|
K ·200 |
|
|
3 |
Rated thunder impulse withstand voltage |
To earth |
|
K ·350 |
|
|
|
|
Between interrupter |
|
K ·410 |
|
|
4 |
Power frequency withstand voltage under zero gauge pressure ofSF6(5 min) |
|
K ·84 |
||
|
5 |
Rated frequency |
Hz |
50 |
||
|
6 |
Rated current |
A |
3150 |
||
|
7 |
Amplitude factor |
|
1.5 |
||
|
8 |
Rated short-circuit breaking current |
|
31.5 |
||
|
9 |
Rated short-circuit making current(peak) |
kA |
80 |
||
|
10 |
Rated short-circuit with stand current |
|
31.5 |
||
|
11 |
Rated peak value withstand current |
|
80 |
||
|
12 |
Rated short-circuit duration |
s |
4 |
||
|
13 |
Rated out-of-phase breaking current |
kA |
8 |
||
|
14 |
Breaking current of close-in fault |
kA |
90%lk,75%lk |
||
|
15 |
Rated line-charging breaking current |
A |
10 |
||
|
16 |
Operating sequence |
|
O-0.3s-CO-180s-CO |
||
|
17 |
Resistance of the main circuit |
μΩ |
≤40 |
||
|
18 |
Rated gauge pressure of SF6(20℃) |
Mpa |
0.5 |
||
|
19 |
Minimum functional gauge pressure(20℃) |
Mpa |
0.45±0.03 |
||
|
20 |
Annual leakage rate of SF6 |
|
<0.5% |
||
|
21 |
Amount of water of SF6(V/V) |
|
≤150×10-8 |
||
|
22 |
Mechanical life |
Times |
10000 |
||
|
23 |
Electricallevel of radio interference |
μV |
≤500 |
||
|
24 |
Creepage distance |
Between interrupter |
mm |
2585 |
|
|
|
|
To earth |
|
2248 |
|
|
25 |
Each filled with SF6 gas weight |
kg |
10 |
||
|
26 |
Weight per breaker |
kg |
1800 |
||
Note:external insulation level is changed by modified coefficient.Every 2000m of altiude,K=1.13:Altitude 3000m,K=1.28.
2)Main technical data of structure
|
No. |
N a m e |
Unit |
Value |
|
|
1 |
Auxiliary circuit voltage |
V |
DC220 or DC110 |
|
|
2 |
he voltage/current of the opening and closing coils |
V/A |
DC110/4;DC220/2 |
|
|
3 |
Energy storage motor |
Rated voltage |
V |
DC220、AC220/DC110、AC110 |
|
|
|
The range of normal working voltage |
V |
85%～110% |
|
|
|
ower |
W |
600 |
|
4 |
The energy storage time of motor |
s |
≤15 |
|
|
5 |
The loop voltage of the heater and the lamp |
V |
AC220 |
|
|
6 |
Rated voltage of the auxiliary switch |
V |
DC220、AC220 |
|
|
7 |
Rated current of the auxiliary switch |
A |
10 |
|
|
8 |
Contacts of the auxiliary switches |
|
10 normal opened contacts and 10 normal closed contacts |
|
3)Mechnical adjustment of the breaker
|
No. |
N a m e |
Unit |
Value |
|
1 |
Center distance between poles |
mm |
1200 |
|
2 |
Strode length of the moving contact |
mm |
120+3 |
|
3 |
Contact stroke length of the moving contact |
mm |
25+2 |
|
4 |
Length of the inter phase operating connecting rod |
mm |
110+3 |
|
5 |
Switch-off speed |
m/s |
4.2-5m/s |
|
6 |
Switch-on speed |
m/s |
2.2-3m/s |
|
7 |
Switch-of time |
ms |
≤40 |
|
8 |
Switch-on time |
ms |
≤100 |
|
9 |
Break time |
ms |
≤60 |
|
10 |
Switch-on/off time |
ms |
≤80 |
|
11 |
Switch-off/on time |
ms |
300 |
|
12 |
The time difference of the opening of three phases |
ms ms- |
≤2 |
|
13 |
The time difference of the closing of three phases |
|
≤3 |
口Order notice
□The type and the specification of the circuit breaker.
□Rated electric parameter(voltage,current,rated short-circuit breaking current and so on).
□Environmental condition(temperature,altitude,filth level and so on).
□ Rated electric parameter of control loop(rated voltage of energy storage motor,rated voltage o fthe opening and closing coils).
□The name and the number of the accessories when required.
□The connection direction of the primary upper terminal.
□Outline dimension
□As per the drawing below.
□LW36-72.5 tank circuit breaker Weight:1500kg.
□Front face area:4.5m²
Online Inquiry
Or use the inquiry form below. Our sales staff will contact you within 24 hours. Thank you for your interest in our products!
