Typical Specifications for Acme

General

TYPICAL SPECIFICATIONS FOR ACME

ESSERIESELECTRICSTEAMSUPERHEATER

Supply and install where shown on drawings,ES series package type Electric Steam Superheaters as manufactured by Acme Engineering Products. Unitsshall beskid mounted factoryassembled, pre-wired, including automatic controls and factorytests.

The ACME Superheater shall heat lbssteam/hrentering at PSIG saturated with % steam quality at º Fto a leavingtemperature of º F and have an electrical capacity of _KW at V PH HZ including a

10% allowance forlosses and safetyconsiderations. In and Out connections shall be in. flanges.

Provide pressure and temperature gauges onoutletand asafetyrelief valve.

PressureVessel

Pressure Vessel design shall beminimum 50PSIand 100º Fabove operating conditions in order toallow forsuitable settingsofprotection devices. Design to ASME Boiler and Pressure Vessel Code Section VIIIDiv. 1 and provide “U”stamp,National Board orCRN Registration.

Inlet &Outletconnections and flanged heating elements shall be class 300# flanges or higher ifapplicable.

Provide a suitable drain connection.

6 in. of high temperature insulation shallenclose the vessel behind a 2 in. angle frame supporting external panels in aluminum.

HeatingElements

The Heating Elements shall haveANSIclass300#flangesor higher ifapplicable with cooling extension toweather-proof terminal boxes. Heating blades shall be incoloy sheathed with a maximum wattdissipation of25 w/in2.

Additionalcostoption for units up to 150 PSIand 500º F: Flanged heating elements shall have individually field replaceable blades withstandard tools secured in the flange with stainless steel fittings. Flanges shall be insulated on the exposed side.

TYPICAL SPECIFICATIONS FOR ACME

ESSERIESELECTRICSTEAMSUPERHEATER

Power and Control Panel:

NEMA12Enclosure shall includethefollowing:

• Magnetic Breaker or DisconnectSwitch,door interlocked;

• Buss Bars or Splitter Block;

•Fuses;

• Control Transformer fused primary;

•On-Offbreakerfor 120V control circuit;

•DualDigitalDisplayElectronicController,1/4”DINsizeforease ofoperation;

• SCR Power Controller to modulate total heating capacityfrom0 to100%, according to steam flow variations;

•Semiconductor fuses toprotectthe SCRs;

•Thermocouple in outlet todetectleaving steamtemperature. A minimumflowisrequired;

• Two levels ofhigh steam temperature protection, one with automatic reset and the second one with manual reset in separate protectioncircuitsfor maximumsecurity;

• Audible and visual alarm circuit with associated display lights, silencing button and horn.

•SPDTdrycontactsforremote alarm supervision;

•OPTIONAL: Two SCR Power Controllers, each modulating half the total capacity, with slightly different time bases in order to reduce pulsations in the electrical distribution.