PAC27P Series (UL-C/US, CE Single Phase)

Feature:

□ Current Capacity: 20, 30, 45, 60, 80, 100A
□ Power Supply: 100 to 120/200 to 240V AC
□ On the condition that the product is used with a noise filter as specified by SHIMADEN, the CE safety standard (EMC Directive) shall be satisfied.
□ As we attach importance to safety aspects, the instrument has a number of alarm circuits including a built-in voltage feedback circuit as a standard function.
□ If you select the current or the voltage control system, or the voltage square switching control system from the optional functions,
control of special types of heaters and transformer loading is possible.

Ordering Information

Phase Angle Control (PAC27P)

note) 1. In order to comply with the EMC Directive, use the noise filter specified by us, which is sold separately, and wire according to the specified method. One filter is required for each PAC27 series thyristor type power regulator. 2. Variable resistance heating elements such as silicon carbide (SiC) heaters have a high negative temperature coefficient (their resistance greatly affected by temperature). During a temperature rise, their resistance falls far below that within the ordinary temperature range, leading to inadequate power. Maintaining output power within an appropriate range at every temperature requires the device’s current capacity to be multiplied by a square root of the heating element’s resistance ratio. To give an example, the approximate resistance ratio of SiC heaters is 1:3, a square root of which is √3, or approx. 1.73. The required current capacity when using those heaters is thus 1.73 times the original capacity. However, since heater deterioration may further widen the ratio, a current capacity even higher than the abovementioned must be selected. As for use of SiC heaters, we recommend about double the original capacity.

Cycle Operation Zero-voltage Switching (PAC27C)