Circuit Breaker HVD8 40.5KV 2000A SF6 from JUCRO Electric
- Model
- HVD8-40.5/2000
Review
Description
a.
The circuit breaker is outdoor small ceramic column structure, which
equipped with CT14 spring operation mechanism; mechanism and
main part connected with simple installation. It has features of convenient adjustment, reliable operation, suitable for
frequent operation; mechanism service life more than 3000 times;
b. Adopt air-compression arc-extinguishing structure, with strong breaking
capacity, 40kA total breaking times up to 12, which is the highest in China:
c.
Reliable sealing performance. Adopt import seal;
dynamic seal adopts "V" type sealing ring with spring pressure compensation structure; the transformer
secondary wiring board matched by cooperative enterprises,
to ensure the annual leakage rate less than 1%,
d. Inner current transformer adopts micro crystallizing alloy high magnetic
materials, with accurate class up to grade 0. 2 or grade 0.2S. According to
users' needs, it can be matched with 12 transformers, to meet the load line of
50 km without restrike.
Item |
Unit |
Date |
|
Rated voltage |
KV |
40.5 |
|
Rated insulation level |
Lightning impulse withstand voltage(peak value) |
KV |
185 |
1min power frequency withstand voltage | KV | 95 | |
Rated current | A | 2000 | |
Mechanical life time | time | 3000 | |
Rated air pressure of SF6
(psig at 20℃) | Mpa | 0.05 | |
Alarm pressure/Min function
pressure (psig at 20℃) | Mpa | 0.47/0.45 | |
Rated
short-circuit breaking current | KA | 40 | |
Rated short
circuit making current (peak value) | 100 | ||
Rated short time withstand
current (thermal stability current) | 40 | ||
Rated peak withstand
current (dynamic stability current) | KA | 100 | |
Rated out of step breaking
current | KA | 10 | |
Rated breaking times under
short circuit breaking current | time | 12 | |
Rated short circuit
duration | S | 4 | |
Closing time (under rated
operation voltage) | S | ≤0.1 | |
Opening time (under rated
operation voltage) | S | ≤0.06 | |
Rated operating sequence | O-0.3s-CO-180s-CO | ||
Rated making
single capacitor bank current | A | 400 | |
Annual leakage
rate | % | ≤1 | |
SF6 water content(V/V) | ≤150*10-6 | ||
Rated operation voltage of matched
CT14 spring operation mechanism | |||
Closing and opening coil voltage | V | AC: 220 380 DC: 18 110 220 | |
Energy storage motor
voltage | V | AC: 220 380 DC: 110 220 | |
Weight of SF6 gas | kg | 8 | |
Weight of circuit breaker (including
operation mechanism) |
kg |
1400 |
|
Item |
Unit |
Data |
Technical parameter |
Moving contact
travel | mm | 95±2 | Measure moving contact
travel |
Opening distance
between contacts | mm | 60±1.5 | Measure
distance between moving and fixed contact |
Pole-to-pole closing
synchronous | ms | ≤3 | Measure pole distance
difference between moving and fixed contact |
Pole-to-pole opening
synchronous | ms | ≤2 | Measure pole
distance difference between moving and fixed contact |
Main circuit resistance | mΩ | ≤120 | Measure DC
voltage reduction |
Closing speed |
m/s |
3.2±0.2 |
Rated air
pressure, measuring method |
Opening speed |
m/s |
3.4±0.2 |
Rated air
pressure, measuring method |
Closing buffer distance |
mm |
9.5-11 |
Under closing
state |
Spacer of closing buffer | mm | 1-2 | Under closing
state |
Partial 48.6kV | Pc | 20 | Measure by partial
measuring device under rated air pressure; apply voltage 486kv on the two
out-line ends of the circuit breaker for 1 min, then reduce the voltage to 28V
to measure |
Disharge 28kV | Pc | 10 |
Strong package, Safety first.
As long as possible to keep the products safe until it arriving customer's warehouse.
Clearly marking label outside of package, customers will be easy to identify their goods.
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