WARM-UP LOAD BOARD

WECO 9200

The WECO 9200 Warm-Up Load Board applies variable voltage and independent current to meters over time, so your shop can confirm that each meter accumulates energy and sees the voltage and current as sourced before it moves on to accuracy testing. Sockets are wired in banks of four, each with its own load control, across 11 ANSI meter forms.

It is available single-sided or double-sided, in 30 A or 50 A versions, on an all-aluminum frame with locking wheels for roll-around mobility.

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Product Highlights

Every socket uses a zero-insertion-force design with a manual lever jaw release and a dead-front safety interlock. A plexiglass socket shield guides meter blades into the jaws and reduces the chance of dropped seals contacting conductors.

The WECO 9200 is a warm-up solution, not an accuracy test system. There is no energy reference standard in this solution. Source adjustment accuracy depends on the board’s ammeter and voltmeter accuracy and on any differential losses due to multiple meter loading.

For load, the WECO 9200 provides continuously variable voltage and independent A and C element current, delivered and received, with an isolated phantom load at each socket that reduces meter creep.

No bypass adapters are needed, and a socket stays in service even if a meter’s service disconnect is left open.

The WECO 9200 control panel on a transparent background.

Features

Load Control With Shop-Ready Safety And Usability

Variable voltage to every socket, supporting warm-up across multiple meter forms.
Independent current: A and C element current up to 30 A or 50 A (by model), delivered and received.
Isolated phantom load at each socket, which reduces meter creep.
No bypass adapters required, and sockets stay in service when a meter service disconnect is open.
Bank control: manual or timer control of when load is applied and for how long, independently for each bank of four sockets.
Meter forms: 1S, 2S, 3S, 4S, 5S, 6S, 9S, 12S, 16S, 25S, and 45S, selected with a meter form switch.
Safety: dead-front interlock at every socket, plexiglass socket shield, and multiple resettable breakers.
Built for the shop floor: zero-insertion-force sockets with manual lever jaw release, all-aluminum frame, locking wheels, and standard 120 V, 15 A input power.

Two WECO 9200, one in front of the other, on a transparent background.

Stable, Reliable Meter Warm-Up

A Warm-Up Cycle, Step by Step

Seat the meters in the zero-insertion-force sockets. The socket shield guides the blades into the jaws.
Select the meter form for each bank of four sockets.
Set voltage and current. Adjust voltage and the A and C element current, delivered or received.
Run the cycle. Start the load manually or set the timer for each bank, then confirm each meter accumulated energy and shows the voltage and current as sourced. Move meters that pass to your Test Board, such as the WECO 4050X, for accuracy testing.

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Which WECO Warm-Up Board Fits Your Shop?

All three boards power meters on a roll-around cart before accuracy testing. The WECO 9000 and WECO 9050 apply voltage for AMI functional screening, such as power-up, display, communication, and disconnect checks. The WECO 9200 adds variable current, so meters run under load.

None of the three boards includes an energy reference standard. On the WECO 9200, source adjustment accuracy depends on the ammeter and voltmeter accuracy. On the WECO 9000 and WECO 9050, voltage is tied to line voltage through transformers. On all three, differential losses due to multiple meter loading also apply.

Board	Applies	Meter forms	Best for
WECO 9000	Voltage, tied to line voltage through transformers	One fixed form per column, set when the board is built	AMI functional screening before accuracy testing
WECO 9050	Voltage, tied to line voltage through transformers	Several forms, chosen with a selector switch	AMI functional testing before accuracy testing
WECO 9200	Variable voltage and independent A and C element current	11 forms, chosen with a selector switch	Running meters under load over time to confirm energy accumulation and functional operation

WECO 9200 FAQ

Why warm up meters under load

Running meters under load over time confirms that each meter accumulates energy and sees the voltage and current as sourced. It is a functional check that catches problems before meters reach the Test Board, and your shop can warm up the next group of meters while the Test Board works on the current one.

Can the WECO 9200 test meter accuracy

No. There is no energy reference standard in this solution. Source adjustment accuracy depends on the ammeter and voltmeter accuracy and on any differential losses due to multiple meter loading. For accuracy testing, use a Test Board such as the WECO 4050X or the multi-position WECO 8050, 8100, and 8200.

What configurations are available

Sockets are wired in banks of four. Single-sided boards hold 8 to 28 sockets, and double-sided boards hold 16 to 56 sockets. Each configuration is available in a 30 A or 50 A version.

What happens if a meter service disconnect is open

The socket stays in service. Each socket has its own isolated phantom load, so an open service disconnect doesn't take other sockets out of the circuit, and no bypass adapters are needed.