ISOMETER® isoES425 Insulation monitoring device for unearthed AC-, AC/DC and DC systems for energy storage devices up to AC/DC 400 V Image similar

Insulation monitoring device for unearthed AC-, AC/DC and DC systems for energy storage devices up to AC/DC 400 V Intended use The ISOMETER® isoES425 monitors the insulation resistance RF of unearthed AC, AC/DC and DC systems (IT systems) for energy storage devices up to AC/DC 400 V. DC components existing in AC systems do not influence the operating characteristics when a minimum load current of DC 10 mA flows. A separate supply voltage Us allows de-energised systems to be monitored as well. By using the isoES425 in network operation, the connection to earth is monitored for interruptions, which...

Connection For UL applications: Only use 60/75 °C copper lines. For UL and CSA applications: Connect the supply voltage via 5 A fuses. For details about the conductor cross sections required for wiring, refer to chapter Technical data. Wiring diagram L1/+ L2/L3 Connection to the supply voltage Us via fuse (line protection): If supplied from an IT system, protect both lines by a fuse. Test / Reset Connect each terminal separately to PE: Use same wire cross section as for “A1”, “A2”. Connection to the system to be monitored Connection for the external combined test and reset button Connection to...

Measuring circuit Measuring circuit (IC1) Supply circuit (IC2) Output circuit (IC3) Control circuit (IC4) Rated voltage Overvoltage category Permissible system leakage capacitance Ce < 100 |jF Permissible extraneous DC voltage Ufg < 700 V Response values Rated impulse voltage Rated insulation voltage Undervoltage detection Overvoltage detection Relative uncertainty depending on the Time response Protective separation (reinforced insulation) between Voltage test (routine test) according to IEC 61010-1 Delay on release toff 0.99 s (0 s)* LC display, multi-functional, not illuminated Tolerance of...

Switching elements 2 x 1 n/o contacts, common terminal 11 Electrical endurance 10,000 cycles Rated operational voltage 230 V / 230 V / 24 V / 110 V / 220 V Rated operational current 5 A / 2 A / 1 A / 0.2 A / 0.1 A Necessary minimum contact load (relay 10 mA / DC 5 V manufacturer's reference) Connection Push-wire terminals Nominal current Conductor sizes Stripping length Rigid Flexible without ferrules Flexible with ferrules with/without plastic sleeve Multi-conductor flexible with TWIN ferrules with plastic sleeve Opening force Test opening Ambient temperatures Classification of mechanical conditions...

Ordering data

Application example energy storage < 30 KW Application principle acc. to VDE application guide VDE-AR-E 2510-2 Application example energy storage > 30 KW Application principle acc. to VDE application guide VDE-AR-E 2510-2

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