SMA HM-20 User Manual

21 Technical Data
SMA Solar Technology AG
Operating manualHM-20-BE-en-19142
21 Technical Data
Energy Manager
Connection to the local router via Ethernet cable (10/100 Mbit/s, RJ45 plug)
Connecting SMA inverters Ethernet or WLAN via local router
Connecting loads 1. Direct data connection (EEBus, SEMP)
2. Indirect data connection (compatible switchable
devices)
Integrated measuring device
Measurement accuracy
Accuracy class according to IEC 61557-12
Based on measured value
Based on IEC 62053-22 or -23 (typical)
When using external current transformers, the respective
measuring accuracy must be taken into account
Energy Manager Voltage: ±0.5%
Current: ±0.5%
Voltage: ±0.5%
Active power: ±1.0%
Reactive power: ±1.0%
Power factor: ±1.0%
Active Energy: class 1
Reactive energy: class 1
Measuring cycle 200ms, 600ms or 1000ms
Maximum Number of Connected Devices
Total number of devices in the system
• of which devices as loads in active energy
management
up to 24
up to 12
Inputs (voltage and current)
Nominal voltage 110 V
AC
 / 230 V
AC
 / 400 V
AC
Frequency 50Hz / 60Hz
Nominal current/limiting current per line conductor 5 A/63 A (>63 A can be covered via external current
transformers)
Short-circuit load carrying capacity max. 6kA
Connection cross-section 10 mm² to 25 mm² (for application up to 63A)
Torque for screw terminals 2.0 Nm
Ambient Conditions in Operation
Ambient temperature
-20°C to +35°C
Storage temperature range -20°C to +60°C

SMA HM-20 Specifications

General

Brand	SMA
Model	HM-20
Category	Measuring Instruments
Language	English