Ordering Information

POWER SERIESP C _ _ - _ _ _ _ - _ _ _ _

Microprocessor-based, solid state power controller

Package Style

C = 65 to 250 amps

Phase

1 = 1 phase

2= 3-phase/2-leg control, (4 SCRs)

3= 3-phase/3-leg control, (6 SCRs)

4= 3-phase/4-wire, wye connected load

8= 2 single-phase zones

9= 3 single-phase zones

Heater Diagnostics

0 = None

1= Heater diagnostics (required for any heater current monitoring or current limiting).

Output Amperage Rating

(See amperage chart to the right)

Output Voltage Rating

A = 24 to 120V

B = 200 to 480V

C = 200 to 600V

Communications

0 = None

1 = EIA/TIA-232/485 communications, opto-isolated (field selectable)

Feedback/Retransmit

0 = None

1= Load current feedback (0-10V or 0-20mA scalable retransmit output) (Must have heater diagnostics selected)

Custom

00= None

AA = No Watlow logo with agency approval marks XX = Custom, consult factory for options

Your Authorized Watlow Distributor Is:

Single Phase Configuration

This configuration can be purchased with any or all the features available on the POWER SERIES, based on customer preference. It is intended for resistive heaters, but can also be used on transformer connected loads in the phase angle firing mode.

Three-Phase, Two Leg Configuration

This configuration is intended for zero cross ringfi only into a stable resistive heater. Typically, a three-phase delta or ungrounded wye connected heater is used and only two of the three V~ line phases are switched.The third phase

is a direct connection through a bussbar on board the POWER SERIES. Heater current monitoring and kVA options are available via the heater diagnostics option.

Three-Phase, Three Leg Configuration

All POWER SERIES options are available with this configuration.It works well with phase angle firing into a three-phase, three-wire wye or delta connected heater. In this configuration, the more common applications are transformer connected loads with heaters requiring a soft start and/or current limiting.

The three-phase, four-wire configuration is intended for zero cross firing into a three-phase grounded wye/star heater (This is a separate hardware option, model number dependent.)

Single-Phase, Multizone Configuration

This configuration is available in two and three single-phase zones and all the features of a single-phase unit are available. (Note that there is only one alarm relay and all zones in the controller must use the same control method.)

Heater Diagnostics

Heater diagnostics may include some or all of the features that require heater current monitoring, depending on the model selected. Heater current monitoring is only available with heater diagnostics installed on the controller. The features dependent on heater current monitoring are heater bakeout, current limiting, heater kVA monitoring, retransmit and heater monitoring alarms such as open heater, heater out of tolerance, load balance and shorted SCR detection/error. Heater diagnostics must also be installed

if you need phase angle control with current limit.

Amperage Chart—50˚C (122˚F)

Non-Fan Cooled

 

 

2 Zone and
3 Zone and
Single Phase
3 Phase, 2 Leg
3 Phase, 3 Leg
Code Amperage Code Amperage Code Amperage

N20

100A

N20

80A

N20

65A

N25

140A

N25

105A

N25

85A

N30

165A

N30

120A

N30

105A

 

 

 

 

 

 

Fan Cooled

Single Phase

3 Phase, 2 Leg
3 Phase, 3 Leg

Code Amperage Code Amperage Code Amperage

F20

125A

F20

120A

F20

90A

F25

200A

F25

160A

F25

140A

F30

250A

F30

185A

F30

155A

 

 

 

 

 

 

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