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Other Devices
IQ DATA PLUS IIThe IQ Data Plus II is an RMS sensing multimeter as well as a protective device that provides complete electrical metering and system voltage protection. The IQ Data Plus II provides an alternative to individually mounted and wired ammeters, volt-meters, ammeter and voltmeter switches, wattmeters, watt-hour meters, varmeters, power factor meters, frequency meters, and watt demand meters.
Addressable Relay II
The Addressable Relay II has two status inputs, and a Form C contact output. One of its applications is to control the length of the demand window for the IQ Data Plus II.
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| IQ Energy Sentinel Mounted on Load Side of Series C Feeder Breakers | Metering Switchboard with IQ Energy Sentinel | IQ Energy Sentinel Applications Left to Right: MCC Starter, Enclosed Starter, Enclosed Breaker and Busplug |
Peak Power Demand (Application Note)
Selecting Demand Windows
To help match peak demand windows of IQ devices with a utility's demand window, the Custom Billing Software allows the user to select 15-, 30-, or
60-minute windows for IQ Energy Sentinel and IQ Data Plus II peak demand readings. Series III software can monitor 10-, 15-, 30- and 60-minute demand windows. The
IQ CED II can monitor demand windows from 1 to 60 minutes.
Synchronizing Demand Windows
Custom Billing Software will "synchronize" (reset) the demand windows of
IQ Energy Sentinels on the hour and at
15- or 30-minute intervals (programmable) between the hours. It will also synchronize demand windows of IQ Data Plus IIs if Addressable Relays IIs are on the network and wired to the sync pulse inputs of the IQ Data Plus IIs (see Custom Billing Software). This "synchronizing" feature ensures all devices' demand windows start and stop at the same time.
The IQ CED II will synchronize the demand windows of IQ Energy Sentinels on its subnetwork at 5-, 10-, 15-, 30-, and 60- minute intervals. If a utility sync pulse signal is wired into the IQ CED II's sync pulse input, the IQ CED II can synchronize the demand windows of the IQ Energy Sentinels on its subnetwork to the utility's demand signal. The IQ CED II will also synchronize demand windows of IQ Data Plus IIs on its subnetwork if Addressable Relay IIs are on the subnetwork and wired to the IQ Data Plus IIs' sync pulse inputs. Of course, the utility sync pulse signal may be connected directly to the IQ Data Plus IIs' sync pulse inputs.
Capturing the highest overall peak demand of the building ("coincident" power demand)
Custom Billing Software allows the user to capture "coincident" demands of IQ Energy Sentinels and IQ Data Plus IIs at the time of highest overall peak demand of the facility. This helps to ensure tenants/departments are not inaccurately billed for peak demand charges. To use this feature, an IQ Data Plus II, with an Addressable Relay II wired into its sync pulse input, must monitor the incoming main from the utility (see Custom Billing Software).