Install Sheet
ZDR-16
//
Wireless Demand Response Controller
Document Ref. EPI-065-02
Installation & Safety Notes
➔
NEVER work alone.
➔
Use appropriate personal protective equipment (PPE) and follow safe electrical work practices.
➔
Only qualified electrical workers should install this equipment. Such work should be performed only after
reading the entire set of installation instructions.
➔
If the equipment is not used in a manner specified by EpiSensor, the protection provided by the equipment
may be impaired.
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Before performing visual inspections, tests, or maintenance on this equipment, disconnect all sources of
electric power. Assume that all circuits are live until they have been completely de-energized, tested, and
tagged. Pay particular attention to the design of the power system. Consider all sources of power, including
the possibility of backfeeding.
➔
Turn off all power supplying the meter and the equipment in which it is installed before working on it.
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Always use a properly rated voltage sensing device to confirm that all power is off.
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Before closing all covers and doors, inspect the work area for tools and objects that may have been left
inside the equipment or panel.
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When removing or installing metering or other equipment, do not allow it to extend into the energised bus.
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The successful operation of this equipment depends upon proper handling,
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Neglecting fundamental installation requirements may lead to personal injury as well as damage to
electrical equipment or other property.
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Before performing Dielectric (Hi-Pot) or Megger testing on any equipment in which the energy meter is
installed, disconnect all input and output wires to the energy meter.
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High voltage testing may damage electronic components contained in the meter.
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Failure to follow these instructions will result in death or serious injury.
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
➔
EpiSensor equipment should be installed, operated, serviced and maintained only by qualified personnel.
EpiSensor does not assume any responsibility for any consequences arising out of the use of this
equipment.
➔
The ZDR-16 voltage measurement inputs are rated for up to 277 V L-N or 480 V L-L. For any voltage
exceeding 277 V L-N, an auxiliary power source must be used. Consult the ZDR-16 datasheet for more
information on available product variants. For voltages exceeding 480 V L-L, a voltage transformer must
be used.
➔
Fuse for neutral terminal is required if the source neutral connection is not grounded.
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Clearly label the device’s disconnect circuit mechanism and install it within easy reach of the operator.
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The fuses / circuit breakers must be rated for the installation voltage and sized for the available fault
current.
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Depending on the type of current transformers used with the EpiSensor ZDR, shorting links may be
required. Please consult the user guide for more information.
➔
If Voltage Transformers are used, the VT ratio setting should be adjusted on the ZDR settings page on the
Gateway.
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By default, there will not be a cable included for mains reference voltages
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ZDR’s using Rogowski coil or milliamp Current Transformers are individually calibrated and the current
transformer cables should not be extended or interchanged.
Connecting an auxiliary supply to the ZDR mains power supply
Note:
By default, a single
phase supply is taken
from L1 and N to power
ZDR. To power ZDR from
an auxiliary supply,
remove these links and
connect as shown in this
diagram.
Important:
Fused disconnect
or circuit breakers (not
supplied) to protect 0.75mm
2
conductor according to local
electrical regulations (min.
500mA)
Live
Neutral
L
N
