Product Overview: JW10 Series Outdoor HV AC Earthing Switch
JW10 series high voltage alternating earthing switch is an outdoor high voltage power transmission equipment of three phase alternating frequency 50Hz/60Hz, which is used to release electrostatic charge of the inspected circuit and equipment and conduct electric safe earthing of inspected busbar and high voltage equipment such as breakers to make earthing opening and closing symbol visible in the circuit and guarantee the personal safety of maintenance personnel. it is generally used in places where single pole vertical fracture disconnection switch is adopted to ground the upper level busbar.
JW10 series earthing switch can be attached on disconnect switches such as GW4C, GW6B, GW7B, GW22B and GW23B, it can also form independent earthing switch. JW10-40.5,72.5,126,252 model adopts SRCC type manual operation mechanism or SRCJ3 type electromotor operation mechanism to conduct tripolar link operation. JW10-363, 550 model earthing switch uses SRC.J2 type electromotor operation mechanism to conduct single pole link operation. It can also realize tripolar electric link.
JW10 series earthing switch is composed of three single pole and operation mechanism, Each single pole includes foundation, support insulator and earthing conducting rod. The earthing conducting rod is installed on the foundation and the fixed contact is installed on the top of support insulator.
The operation mechanism snaps in or inserts in the fixed contact to realize switching on of earthing switch through driving element driving the earthing conducting rod to swing upward. The switching off operation is on the contrary.
Specifications and Parameters:
| Item | unit | parameters | |||||||||
| Product model | JW10-40.5 | JW10-72.5 | M10-126/145(G-W) | JW10-170 | M10-252(G-W) | M10-363(G-W) | JW10-550(W) | JW10-420(W) | |||
| Rated voltage | kV | 40.5 | 72.5 | 126/145 | 170 | 252 | 363 | 550 | 420 | ||
| Rated insuiating level | 1 min power frequency withstand voltage (effective value) | To earth / phase to phase | kV | 110 | 180 | 230/275 | 275 | 460 | 510 | 740 | 520 |
| raled lightning surge withstand voltage (peak value) | To earth / phase to phase | 160 | 380 | 550/650 | 650 | 1050 | 1175 | 1675 | 1425 | ||
| rated swithing impulsewithstand voltage (peak value) | To earth / phase to phase | —— | —— | —— | —— | —— | 1425/950 | 1950/1300 | 1575/1050 | ||
| Rated frequency | Hz | 50/60 | 60 | 50/60 | |||||||
| Rated peak withstand current | kA | 125 | 125 | 125 | 104 | 160 | 160 | 160 | |||
| Rated shorttime withstand current | 50 | 50 | 50 | 40 | 50/63 | 63 | 63 | ||||
| Duration of rated short circuit current | S | 4 | 4 | 3 | 3 | 3 | 3 | 2 | |||
| Mechanical load of rated terminal | Horizontal & longitudinal | N | 1000 | 1000 | 1000/1250 | 1250 | 1500 | 2500 | 4000 | 4000 | |
| Horizontal & transversal | 750 | 750 | 750 | 750 | 1000 | 2000 | 2000 | 1600 | |||
| Verfical force | 750 | 750 | 1000 | 1000 | 1250 | 1500 | 2000 | 1500 | |||
| Induced current switching capability of earthing switch |
Electromagnetic induction current (current/voltage) | A/kV | 100/4 | 100/4 | 100/6(80/2) | 100/6(80/2) | 160/15(80/2) | 1250/35(160/10) | 1250/35(160/20) | 160/10(80/2) | |
| Electrostatic induction current (current/voltage) | A/kV | 2/6 | 2/6 | 5/6(2/6) | 5/6(2/6) | 10/15(3/12) | 50/50(18/17) | 50/50(25/25) | 18/20(1.25/5) | ||
| Time of opening and closing | Times | 10 | 10 | 10 | 10 | 10 | |||||
| Radio interference voltage | μv | ≤500 | |||||||||
| Creep distance | mm | 1256 | 1813/2248 | 3150,3906,3625,4495 | 4250,5270 | 6300,7812 | ≥9450 | ≥13750 | ≥10500 | ||
| Mechanical life (M1 grade) | Times | 10000 | |||||||||
| Applicable altitude | m | ≤2000 | ≤2000 | ≤2000 | ≤2000 | ≤2000 | ≤3000 | ≤1000 | ≤1000 | ||
| Electromotor operation mechanism | Model | SRCJ3 | SRCJ2 | ||||||||
| Motor voltage | V | AC380/DC220 | |||||||||
| Control voltage | V | AC220/DC220/DC110 | |||||||||
| Opening time | S | 12±1 | 16±1 | ||||||||
| Output corner | 135⁰ | 180° | |||||||||
| Manual operation mechanism |
Model | SRCS | —— | ||||||||
| Control voltage | V | AC220、DC220、DC10 | |||||||||
Product Features:
The conductive arm is made of high strength aluminium alloy sections, which has good electrical conductivity, high mechanical strength,light weight and strong anti-corrosion capacity.
Reliable contact structure
JW10-40 5,72.5,126,252 type earthing switch is one-step movement structure with inserted contact which is simple in structure and convenient in maintenance.The structure makes effective use of electrodynamic force to intensify the contact and keep the earthing knife switch on the switching on location, which possesses good capacity of bearing short circuit current. lt is also in possession of the capacity of B grade induction current which meets national standard.
JW10-63, 550 type earthing switch is in single arm vertical & open type with inserted type contact which is simple in structure. Two-step movement is required in switching on of earthing conductive rod. When switching on, rotate the switch upward to the fixed contact and direct act to insert into the quincuncial contact, The contact is reliable and the capacity of bearing short circuit current is strong.
After installing subsidiary loop and vacuum switch, its parameters of opening and closing induction current reach the domestic leading level: electromagnetic induction current: 1250A, 35kV;electrostatic induction current: 50A, 50kV.
We offer the most advanced engineering design solutions and product technology solutions to global power customers, and continue to create value for the commercial success of global power customers.
EN
AR
BG
HR
CS
DA
FR
DE
EL
HI
PL
PT
RU
ES
CA
TL
ID
SR
SK
SL
UK
VI
ET
HU
TH
MS
SW
GA
CY
HY
AZ
UR
BN
LO
MN
NE
MY
KK
UZ
KY
