TECHNICAL SPECIFICATIONS BASIC DATA
a BRAND HEMG
- SUPPLY DATA
b.1 MODEL HGIS
b.2 SWITCH TYPE ZHW-72.5KV
b.3 QUANTITY 1
b.4 YEAR OF MANUFACTURE 2019
- MANUFACTURING STANDARD IEC 62271-205, 62271-108, IEC 60694 Ed. 2.2
- THE SWITCH FEATURES
d.1 Number of phases 3 3
d.2 Frequency 50HZ
d.3 Max System voltage 72.5kv
d.4 Nominal operating voltage 63KV
d.5 Internal insulation (BIL wave discharge 8/20 µs) 325KV
d.6 External insulation (BIL wave discharge 8/20 µs) 325KV
d.7 Creepage (Creepage distance) 31MM/KV
d.8 Nominal current 1250A
d.9 Short circuit (3 seconds) 31KA/3S
d.10 Noise level 74DB
d.11 Mounting height 1000M
d.12 Degree of seismicity 0.5g
d.13 Installation Outdoor on the Platform
d.14 Maximum wind speed 100km/h
d.15 Degree of pollution IV
d.16 Relative humidity 100%
d.17 Temperature
− 15° C to + 50 ° C
d.18 Wrap switch, disconnector, and TC SF6
d.19 Middle of the arc SF5
- SWITCH COMPONENTS
e.1 Three phase switches Open-closed - grounded
Adjacent to the switch
e.2 Current per phase transformers One for measuring,
Two for protection
e.3 Control cabinet included
e.4 Connectors 500 MCM
e.5 Galvanized steel structure included
(f). BASIC CHARACTERISTICS OF THE SWITCH
f.1 Nominal current 1250A
f.2 Nominal capacity of interruption, the effective value of the alternating component 40KA rms
f.3 Rated interruption, percentage of the DC 40%
f.4 Nominal capacity of closing short 31.5KA
f.5 Rated duration of short circuit 3S
f.6 Rated interruption in phase discordance 7.88KA
f.7 Sequence of operation 0-0.3s-CO-3 min-CO
f.8 Maximum total interrupt time 50MS
Audited Supplier 
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