Video: Shark 200 – Product

Video transcript

The Shark 200: a revenue-grade panel meter that also logs, records power quality and grows with plug-in cards. What it measures, what it keeps, and how it talks to the rest of the substation. A single main meter tells you how much energy came in, not where it went. A meter on each feeder, transformer or tenant does, provided its numbers are good enough to bill with, and it keeps them when nobody is watching. It is a class 0.2 meter, to ANSI C 12 point 20 and IEC 62053 dash 22. It samples every channel at over 400 samples per cycle,

analyses harmonics to the 40th order and records waveforms at up to 512 samples per cycle. On the front, 3 lines of bright red digits show phases A, B and C at once. MENU, ENTER and the two arrow keys set it up. The infrared port programs it from a laptop, the load bar gives an analogue feel of the current, and the watt-hour pulse lets a test standard check its accuracy. Voltage line to neutral is measured to 0.1%, and current, power, energy and power factor to 0.2%. Frequency, to 7000ths of a hertz.

Every value can be scaled to the primary side of any CT and PT ratio. Functions are unlocked with V Switch keys, in the field, without taking the meter out of the panel. Each key includes everything below it: from plain multifunction metering in V one, up to 512 samples per cycle and 4 megabytes of memory in V6. With logging enabled it keeps 3 historical logs of more than 64 parameters each, with their own intervals, one for billing and another for engineering, for example.

Alarms, IO changes and system events are logged with a time stamp, so any reset or change of settings leaves a trace. From V5, a voltage sag, a swell or a current fault triggers a waveform capture, with cycles before and after the event, kept in a circular buffer of up to 170 events. A separate log plots each voltage event on the CBEMA or SEMI F 47 curve, without downloading a single waveform. As standard it has an RS-485 port with Modbus or DNP3, the infrared port and a KYZ energy pulse.

The option slots add Ethernet: one card with a web server, Modbus TCP and DNP3, or one with IEC 61850. Two cards give two Ethernet ports with their own addresses. The same two slots take IO cards, and the meter detects which card is fitted. Analogue outputs of zero to one or 4 to 20 milliamps for an RTU, pulse outputs, relays with status inputs, or a fibre optic link. Cards can be ordered later and fitted on site. In a substation one meter covers voltage and frequency recording,

the watch on transformers and line regulators, and telemetry. RS-485, Ethernet and analogue outputs work at the same time, so it fits whatever infrastructure is already there, and several systems can read it at once. The same meter fits a 92 millimetre DIN cut-out or a four-inch ANSI round one, and needs only 4 inches of depth. It replaces an old analogue meter without enlarging the hole, and uses the CT and PT wiring already in the panel. Without a display, the 200T transducer mounts on a DIN rail.

It is built for the switchgear: all inputs and outputs isolated to 2500 volts, current inputs that hold 100 amps for 10 seconds, surge withstand to I triple EC 37 point 90.1, and operation from minus 20 to plus 70 degrees. Its place is in utility, industrial, commercial and campus metering and submetering, in substation telemetry, in load and power quality studies, and wherever an analogue panel meter is due for replacement. In figures: 20 to 576 volts line to neutral, 5 amp or one amp CT secondaries,

a universal supply of 90 to 265 volts AC, and a meter of under a kilogram. Power network analysers, from Amperis.